Add configurable maintenance mode file support

Implement maintenance_mode_file configuration option in NotificationConfig
to allow customizable file paths for suppressing email notifications.
Updates maintenance mode check to use configured path instead of hardcoded
/tmp/cm-maintenance file.

AGENTS.md

@@ -1,3 +0,0 @@
-# Agent Guide
-
-Agents working in this repo must follow the instructions in `CLAUDE.md`.

CLAUDE.md

@@ -2,276 +2,76 @@
 
 ## Overview
 
-A high-performance Rust-based TUI dashboard for monitoring CMTEC infrastructure. Built to replace Glance with a custom solution tailored for our specific monitoring needs and ZMQ-based metric collection.
+A high-performance Rust-based TUI dashboard for monitoring CMTEC infrastructure. Built with ZMQ-based metric collection and individual metrics architecture.
 
-## Implementation Strategy
+## Current Features
 
-### Current Implementation Status
+### Core Functionality
+- **Real-time Monitoring**: CPU, RAM, Storage, and Service status
+- **Service Management**: Start/stop services with user-stopped tracking
+- **Multi-host Support**: Monitor multiple servers from single dashboard
+- **NixOS Integration**: System rebuild via SSH + tmux popup
+- **Backup Monitoring**: Borgbackup status and scheduling
 
-**System Panel Enhancement - COMPLETED** ✅
+### User-Stopped Service Tracking
+- Services stopped via dashboard are marked as "user-stopped"
+- User-stopped services report Status::OK instead of Warning
+- Prevents false alerts during intentional maintenance
+- Persistent storage survives agent restarts
+- Automatic flag clearing when services are restarted via dashboard
 
-All system panel features successfully implemented:
-- ✅ **NixOS Collector**: Created collector for version and active users  
-- ✅ **System Widget**: Unified widget combining NixOS, CPU, RAM, and Storage
-- ✅ **Build Display**: Shows NixOS build information without codename
-- ✅ **Active Users**: Displays currently logged in users
-- ✅ **Tmpfs Monitoring**: Added /tmp usage to RAM section
-- ✅ **Agent Deployment**: NixOS collector working in production
-
-**Keyboard Navigation and Service Management - COMPLETED** ✅
-
-All keyboard navigation and service selection features successfully implemented:
-- ✅ **Panel Navigation**: Shift+Tab cycles through visible panels only (System → Services → Backup)
-- ✅ **Service Selection**: Up/Down arrows navigate through parent services with visual cursor
-- ✅ **Focus Management**: Selection highlighting only visible when Services panel focused
-- ✅ **Status Preservation**: Service health colors maintained during selection (green/red icons)
-- ✅ **Smart Panel Switching**: Only cycles through panels with data (backup panel conditional)
-- ✅ **Scroll Support**: All panels support content scrolling with proper overflow indicators
-
-**Current Status - October 27, 2025:**
-- All keyboard navigation features working correctly ✅
-- Service selection cursor implemented with focus-aware highlighting ✅
-- Panel scrolling fixed for System, Services, and Backup panels ✅
-- Build display working: "Build: 25.05.20251004.3bcc93c" ✅
-- Agent version display working: "Agent: v0.1.17" ✅
-- Cross-host version comparison implemented ✅
-- Automated binary release system working ✅
-- SMART data consolidated into disk collector ✅
-
-**RESOLVED - Remote Rebuild Functionality:**
-- ✅ **System Rebuild**: Now uses simple SSH + tmux popup approach
-- ✅ **Process Isolation**: Rebuild runs independently via SSH, survives agent/dashboard restarts
-- ✅ **Configuration**: SSH user and rebuild alias configurable in dashboard config
-- ✅ **Service Control**: Works correctly for start/stop/restart of services
-
-**Solution Implemented:**
-- Replaced complex SystemRebuild command infrastructure with direct tmux popup
-- Uses `tmux display-popup "ssh -tt {user}@{hostname} 'bash -ic {alias}'"`
-- Configurable SSH user and rebuild alias in dashboard config
-- Eliminates all agent crashes during rebuilds
-- Simple, reliable, and follows standard tmux interface patterns
-
-**Current Layout:**
-```
-NixOS:
-Build: 25.05.20251004.3bcc93c
-Agent: v0.1.17   # Shows agent version from Cargo.toml
-Active users: cm, simon
-CPU:
-● Load: 0.02 0.31 0.86 • 3000MHz
-RAM:
-● Usage: 33% 2.6GB/7.6GB  
-● /tmp: 0% 0B/2.0GB  
-Storage:  
-● root (Single):  
- ├─ ● nvme0n1 W: 1%
- └─ ● 18% 167.4GB/928.2GB
+### Custom Service Logs
+- Configure service-specific log file paths per host in dashboard config
+- Press `L` on any service to view custom log files via `tail -f`
+- Configuration format in dashboard config:
+```toml
+[service_logs]
+hostname1 = [
+  { service_name = "nginx", log_file_path = "/var/log/nginx/access.log" },
+  { service_name = "app", log_file_path = "/var/log/myapp/app.log" }
+]
+hostname2 = [
+  { service_name = "database", log_file_path = "/var/log/postgres/postgres.log" }
+]
 ```
 
-**System panel layout fully implemented with blue tree symbols ✅**
-**Tree symbols now use consistent blue theming across all panels ✅**
-**Overflow handling restored for all widgets ("... and X more") ✅**
-**Agent version display working correctly ✅**
-**Cross-host version comparison logging warnings ✅**
-**Backup panel visibility fixed - only shows when meaningful data exists ✅**
-**SSH-based rebuild system fully implemented and working ✅**
+### Service Management
+- **Direct Control**: Arrow keys (↑↓) or vim keys (j/k) navigate services
+- **Service Actions**: 
+  - `s` - Start service (sends UserStart command)
+  - `S` - Stop service (sends UserStop command)
+  - `J` - Show service logs (journalctl in tmux popup)
+  - `L` - Show custom log files (tail -f custom paths in tmux popup)
+  - `R` - Rebuild current host
+- **Visual Status**: Green ● (active), Yellow ◐ (inactive), Red ◯ (failed)
+- **Transitional Icons**: Blue arrows during operations
 
-### Current Keyboard Navigation Implementation
-
-**Navigation Controls:**
-- **Tab**: Switch between hosts (cmbox, srv01, srv02, steambox, etc.)
-- **Shift+Tab**: Cycle through visible panels (System → Services → Backup → System)
-- **Up/Down (System/Backup)**: Scroll through panel content
-- **Up/Down (Services)**: Move service selection cursor between parent services
+### Navigation
+- **Tab**: Switch between hosts
+- **↑↓ or j/k**: Select services
+- **J**: Show service logs (journalctl)
+- **L**: Show custom log files
 - **q**: Quit dashboard
 
-**Panel-Specific Features:**
-- **System Panel**: Scrollable content with CPU, RAM, Storage details
-- **Services Panel**: Service selection cursor for parent services only (docker, nginx, postgresql, etc.)
-- **Backup Panel**: Scrollable repository list with proper overflow handling
-
-**Visual Feedback:**
-- **Focused Panel**: Blue border and title highlighting
-- **Service Selection**: Blue background with preserved status icon colors (green ● for active, red ● for failed)
-- **Focus-Aware Selection**: Selection highlighting only visible when Services panel focused
-- **Dynamic Statusbar**: Context-aware shortcuts based on focused panel
-
-### Remote Command Execution - WORKING ✅
-
-**All Issues Resolved (as of 2025-10-24):**
-- ✅ **ZMQ Command Protocol**: Extended with ServiceControl and SystemRebuild variants
-- ✅ **Agent Handlers**: systemctl and nixos-rebuild execution with maintenance mode
-- ✅ **Dashboard Integration**: Keyboard shortcuts execute commands
-- ✅ **Service Control**: Fixed toggle logic - replaced with separate 's' (start) and 'S' (stop)
-- ✅ **System Rebuild**: Fixed permission issues and sandboxing problems
-- ✅ **Git Clone Approach**: Implemented for nixos-rebuild to avoid directory permissions
-- ✅ **Visual Feedback**: Directional arrows for service status (↑ starting, ↓ stopping, ↻ restarting)
-
-### Terminal Popup for Real-time Output - IMPLEMENTED ✅
-
-**Status (as of 2025-10-26):**
-- ✅ **Terminal Popup UI**: 80% screen coverage with terminal styling and color-coded output
-- ✅ **ZMQ Streaming Protocol**: CommandOutputMessage for real-time output transmission
-- ✅ **Keyboard Controls**: ESC/Q to close, ↑↓ to scroll, manual close (no auto-close)
-- ✅ **Real-time Display**: Live streaming of command output as it happens
-- ✅ **Version-based Agent Reporting**: Shows "Agent: v0.1.13" instead of nix store hash
-
-**Current Implementation Issues:**
-- ❌ **Agent Process Crashes**: Agent dies during nixos-rebuild execution
-- ❌ **Inconsistent Output**: Different outputs each time 'R' is pressed
-- ❌ **Limited Output Visibility**: Not capturing all nixos-rebuild progress
-
-**PLANNED SOLUTION - Systemd Service Approach:**
-
-**Problem**: Direct nixos-rebuild execution in agent causes process crashes and inconsistent output.
-
-**Solution**: Create dedicated systemd service for rebuild operations.
-
-**Implementation Plan:**
-1. **NixOS Systemd Service**:
-   ```nix
-   systemd.services.cm-rebuild = {
-     description = "CM Dashboard NixOS Rebuild";
-     serviceConfig = {
-       Type = "oneshot";
-       ExecStart = "${pkgs.nixos-rebuild}/bin/nixos-rebuild switch --flake . --option sandbox false";
-       WorkingDirectory = "/var/lib/cm-dashboard/nixos-config";
-       User = "root";
-       StandardOutput = "journal";
-       StandardError = "journal";
-     };
-   };
-   ```
-
-2. **Agent Modification**:
-   - Replace direct nixos-rebuild execution with: `systemctl start cm-rebuild`
-   - Stream output via: `journalctl -u cm-rebuild -f --no-pager`
-   - Monitor service status for completion detection
-
-3. **Benefits**:
-   - **Process Isolation**: Service runs independently, won't crash agent
-   - **Consistent Output**: Always same deterministic rebuild process
-   - **Proper Logging**: systemd journal handles all output management
-   - **Resource Management**: systemd manages cleanup and resource limits
-   - **Status Tracking**: Can query service status (running/failed/success)
-
-**Next Priority**: Implement systemd service approach for reliable rebuild operations.
-
-**Keyboard Controls Status:**
-- **Services Panel**: 
-  - R (restart) ✅ Working
-  - s (start) ✅ Working  
-  - S (stop) ✅ Working
-- **System Panel**: R (nixos-rebuild) ✅ Working with --option sandbox false
-- **Backup Panel**: B (trigger backup) ❓ Not implemented
-
-**Visual Feedback Implementation - IN PROGRESS:**
-
-Context-appropriate progress indicators for each panel:
-
-**Services Panel** (Service status transitions):
-```
-● nginx          active    →  ⏳ nginx      restarting  →  ● nginx          active
-● docker         active    →  ⏳ docker     stopping    →  ● docker         inactive  
-```
-
-**System Panel** (Build progress in NixOS section):
-```
-NixOS:
-Build: 25.05.20251004.3bcc93c    →    Build: [████████████     ] 65%
-Active users: cm, simon               Active users: cm, simon
-```
-
-**Backup Panel** (OnGoing status with progress):
-```
-Latest backup:              →    Latest backup:
-● 2024-10-23 14:32:15            ● OnGoing  
-└─ Duration: 1.3m                 └─ [██████       ] 60%
-```
-
-**Critical Configuration Hash Fix - HIGH PRIORITY:**
-
-**Problem:** Configuration hash currently shows git commit hash instead of actual deployed system hash.
-
-**Current (incorrect):** 
-- Shows git hash: `db11f82` (source repository commit)
-- Not accurate - doesn't reflect what's actually deployed
-
-**Target (correct):**
-- Show nix store hash: `d8ivwiar` (first 8 chars from deployed system)  
-- Source: `/nix/store/d8ivwiarhwhgqzskj6q2482r58z46qjf-nixos-system-cmbox-25.05.20251004.3bcc93c`
-- Pattern: Extract hash from `/nix/store/HASH-nixos-system-HOSTNAME-VERSION`
-
-**Benefits:**
-1. **Deployment Verification:** Confirms rebuild actually succeeded
-2. **Accurate Status:** Shows what's truly running, not just source
-3. **Rebuild Completion Detection:** Hash change = rebuild completed
-4. **Rollback Tracking:** Each deployment has unique identifier
-
-**Implementation Required:**
-1. Agent extracts nix store hash from `ls -la /run/current-system` 
-2. Reports this as `system_config_hash` metric instead of git hash
-3. Dashboard displays first 8 characters: `Config: d8ivwiar`
-
-**Next Session Priority Tasks:**
-
-**Remaining Features:**
-1. **Fix Configuration Hash Display (CRITICAL)**:
-   - Use nix store hash instead of git commit hash
-   - Extract from `/run/current-system` -> `/nix/store/HASH-nixos-system-*`
-   - Enables proper rebuild completion detection
-
-2. **Command Response Protocol**:
-   - Agent sends command completion/failure back to dashboard via ZMQ
-   - Dashboard updates UI status from ⏳ to ● when commands complete
-   - Clear success/failure status after timeout
-
-3. **Backup Panel Features**:
-   - Implement backup trigger functionality (B key)
-   - Complete visual feedback for backup operations
-   - Add backup progress indicators
-
-**Enhancement Tasks:**
-- Add confirmation dialogs for destructive actions (stop/restart/rebuild)
-- Implement command history/logging
-- Add keyboard shortcuts help overlay
-
-**Future Enhanced Navigation:**
-- Add Page Up/Down for faster scrolling through long service lists
-- Implement search/filter functionality for services
-- Add jump-to-service shortcuts (first letter navigation)
-
-**Future Advanced Features:**
-- Service dependency visualization
-- Historical service status tracking
-- Real-time log viewing integration
-
-## Core Architecture Principles - CRITICAL
+## Core Architecture Principles
 
 ### Individual Metrics Philosophy
-
-**NEW ARCHITECTURE**: Agent collects individual metrics, dashboard composes widgets from those metrics.
+- Agent collects individual metrics, dashboard composes widgets
+- Each metric collected, transmitted, and stored individually
+- Agent calculates status for each metric using thresholds
+- Dashboard aggregates individual metric statuses for widget status
 
 ### Maintenance Mode
-
-**Purpose:**
-
-- Suppress email notifications during planned maintenance or backups
-- Prevents false alerts when services are intentionally stopped
-
-**Implementation:**
-
 - Agent checks for `/tmp/cm-maintenance` file before sending notifications
 - File presence suppresses all email notifications while continuing monitoring
 - Dashboard continues to show real status, only notifications are blocked
 
-**Usage:**
-
+Usage:
 ```bash
 # Enable maintenance mode
 touch /tmp/cm-maintenance
 
-# Run maintenance tasks (backups, service restarts, etc.)
+# Run maintenance tasks
 systemctl stop service
 # ... maintenance work ...
 systemctl start service
@@ -280,61 +80,84 @@ systemctl start service
 rm /tmp/cm-maintenance
 ```
 
-**NixOS Integration:**
+## Development and Deployment Architecture
 
-- Borgbackup script automatically creates/removes maintenance file
-- Automatic cleanup via trap ensures maintenance mode doesn't stick
-- All cinfiguration are shall be done from nixos config
+### Development Path
+- **Location:** `~/projects/cm-dashboard` 
+- **Purpose:** Development workflow only - for committing new code
+- **Access:** Only for developers to commit changes
 
-**ARCHITECTURE ENFORCEMENT**:
+### Deployment Path  
+- **Location:** `/var/lib/cm-dashboard/nixos-config`
+- **Purpose:** Production deployment only - agent clones/pulls from git
+- **Workflow:** git pull → `/var/lib/cm-dashboard/nixos-config` → nixos-rebuild
 
-- **ZERO legacy code reuse** - Fresh implementation following ARCHITECT.md exactly
-- **Individual metrics only** - NO grouped metric structures
-- **Reference-only legacy** - Study old functionality, implement new architecture
-- **Clean slate mindset** - Build as if legacy codebase never existed
+### Git Flow
+```
+Development: ~/projects/cm-dashboard → git commit → git push
+Deployment:  git pull → /var/lib/cm-dashboard/nixos-config → rebuild
+```
 
-**Implementation Rules**:
+## Automated Binary Release System
 
-1. **Individual Metrics**: Each metric is collected, transmitted, and stored individually
-2. **Agent Status Authority**: Agent calculates status for each metric using thresholds
-3. **Dashboard Composition**: Dashboard widgets subscribe to specific metrics by name
-4. **Status Aggregation**: Dashboard aggregates individual metric statuses for widget status
-   **Testing & Building**:
+CM Dashboard uses automated binary releases instead of source builds.
 
-- **Workspace builds**: `cargo build --workspace` for all testing
-- **Clean compilation**: Remove `target/` between architecture changes
-- **ZMQ testing**: Test agent-dashboard communication independently
-- **Widget testing**: Verify UI layout matches legacy appearance exactly
+### Creating New Releases
+```bash
+cd ~/projects/cm-dashboard
+git tag v0.1.X
+git push origin v0.1.X
+```
 
-**NEVER in New Implementation**:
+This automatically:
+- Builds static binaries with `RUSTFLAGS="-C target-feature=+crt-static"`
+- Creates GitHub-style release with tarball
+- Uploads binaries via Gitea API
 
-- Copy/paste ANY code from legacy backup
-- Calculate status in dashboard widgets
-- Hardcode metric names in widgets (use const arrays)
+### NixOS Configuration Updates
+Edit `~/projects/nixosbox/hosts/common/cm-dashboard.nix`:
 
-# Important Communication Guidelines
+```nix
+version = "v0.1.X";
+src = pkgs.fetchurl {
+  url = "https://gitea.cmtec.se/cm/cm-dashboard/releases/download/${version}/cm-dashboard-linux-x86_64.tar.gz";
+  sha256 = "sha256-NEW_HASH_HERE";
+};
+```
 
-NEVER write that you have "successfully implemented" something or generate extensive summary text without first verifying with the user that the implementation is correct. This wastes tokens. Keep responses concise.
+### Get Release Hash
+```bash
+cd ~/projects/nixosbox
+nix-build --no-out-link -E 'with import <nixpkgs> {}; fetchurl {
+  url = "https://gitea.cmtec.se/cm/cm-dashboard/releases/download/v0.1.X/cm-dashboard-linux-x86_64.tar.gz";
+  sha256 = "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
+}' 2>&1 | grep "got:"
+```
 
-NEVER implement code without first getting explicit user agreement on the approach. Always ask for confirmation before proceeding with implementation.
+### Building
+
+**Testing & Building:**
+- **Workspace builds**: `nix-shell -p openssl pkg-config --run "cargo build --workspace"`
+- **Clean compilation**: Remove `target/` between major changes
+
+## Important Communication Guidelines
+
+Keep responses concise and focused. Avoid extensive implementation summaries unless requested.
 
 ## Commit Message Guidelines
 
 **NEVER mention:**
-
 - Claude or any AI assistant names
 - Automation or AI-generated content
 - Any reference to automated code generation
 
 **ALWAYS:**
-
 - Focus purely on technical changes and their purpose
 - Use standard software development commit message format
 - Describe what was changed and why, not how it was created
 - Write from the perspective of a human developer
 
 **Examples:**
-
 - ❌ "Generated with Claude Code"
 - ❌ "AI-assisted implementation"
 - ❌ "Automated refactoring"
@@ -342,83 +165,22 @@ NEVER implement code without first getting explicit user agreement on the approa
 - ✅ "Restructure storage widget with improved layout"
 - ✅ "Update CPU thresholds to production values"
 
-## Development and Deployment Architecture
+## Implementation Rules
 
-**CRITICAL:** Development and deployment paths are completely separate:
+1. **Individual Metrics**: Each metric is collected, transmitted, and stored individually
+2. **Agent Status Authority**: Agent calculates status for each metric using thresholds
+3. **Dashboard Composition**: Dashboard widgets subscribe to specific metrics by name
+4. **Status Aggregation**: Dashboard aggregates individual metric statuses for widget status
 
-### Development Path
-- **Location:** `~/projects/nixosbox` 
-- **Purpose:** Development workflow only - for committing new cm-dashboard code
-- **Access:** Only for developers to commit changes
-- **Code Access:** Running cm-dashboard code shall NEVER access this path
+**NEVER:**
+- Copy/paste ANY code from legacy implementations
+- Calculate status in dashboard widgets
+- Hardcode metric names in widgets (use const arrays)
+- Create files unless absolutely necessary for achieving goals
+- Create documentation files unless explicitly requested
 
-### Deployment Path  
-- **Location:** `/var/lib/cm-dashboard/nixos-config`
-- **Purpose:** Production deployment only - agent clones/pulls from git
-- **Access:** Only cm-dashboard agent for deployment operations
-- **Workflow:** git pull → `/var/lib/cm-dashboard/nixos-config` → nixos-rebuild
-
-### Git Flow
-```
-Development: ~/projects/nixosbox → git commit → git push
-Deployment:  git pull → /var/lib/cm-dashboard/nixos-config → rebuild
-```
-
-## Automated Binary Release System
-
-**IMPLEMENTED:** cm-dashboard now uses automated binary releases instead of source builds.
-
-### Release Workflow
-
-1. **Automated Release Creation**
-   - Gitea Actions workflow builds static binaries on tag push
-   - Creates release with `cm-dashboard-linux-x86_64.tar.gz` tarball
-   - No manual intervention required for binary generation
-
-2. **Creating New Releases**
-   ```bash
-   cd ~/projects/cm-dashboard
-   git tag v0.1.X
-   git push origin v0.1.X
-   ```
-   
-   This automatically:
-   - Builds static binaries with `RUSTFLAGS="-C target-feature=+crt-static"`
-   - Creates GitHub-style release with tarball
-   - Uploads binaries via Gitea API
-
-3. **NixOS Configuration Updates**
-   Edit `~/projects/nixosbox/hosts/common/cm-dashboard.nix`:
-
-   ```nix
-   version = "v0.1.X";
-   src = pkgs.fetchurl {
-     url = "https://gitea.cmtec.se/cm/cm-dashboard/releases/download/${version}/cm-dashboard-linux-x86_64.tar.gz";
-     sha256 = "sha256-NEW_HASH_HERE";
-   };
-   ```
-
-4. **Get Release Hash**
-   ```bash
-   cd ~/projects/nixosbox
-   nix-build --no-out-link -E 'with import <nixpkgs> {}; fetchurl {
-     url = "https://gitea.cmtec.se/cm/cm-dashboard/releases/download/v0.1.X/cm-dashboard-linux-x86_64.tar.gz";
-     sha256 = "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
-   }' 2>&1 | grep "got:"
-   ```
-
-5. **Commit and Deploy**
-   ```bash
-   cd ~/projects/nixosbox
-   git add hosts/common/cm-dashboard.nix
-   git commit -m "Update cm-dashboard to v0.1.X with static binaries"
-   git push
-   ```
-
-### Benefits
-
-- **No compilation overhead** on each host
-- **Consistent static binaries** across all hosts
-- **Faster deployments** - download vs compile
-- **No library dependency issues** - static linking
-- **Automated pipeline** - tag push triggers everything
+**ALWAYS:**
+- Prefer editing existing files to creating new ones
+- Follow existing code conventions and patterns
+- Use existing libraries and utilities
+- Follow security best practices

Cargo.lock

@@ -270,7 +270,7 @@ checksum = "a1d728cc89cf3aee9ff92b05e62b19ee65a02b5702cff7d5a377e32c6ae29d8d"
 
 [[package]]
 name = "cm-dashboard"
-version = "0.1.19"
+version = "0.1.65"
 dependencies = [
  "anyhow",
  "chrono",
@@ -286,12 +286,13 @@ dependencies = [
  "toml",
  "tracing",
  "tracing-subscriber",
+ "wake-on-lan",
  "zmq",
 ]
 
 [[package]]
 name = "cm-dashboard-agent"
-version = "0.1.19"
+version = "0.1.65"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -314,7 +315,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-shared"
-version = "0.1.19"
+version = "0.1.65"
 dependencies = [
  "chrono",
  "serde",
@@ -2064,6 +2065,12 @@ version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
 
+[[package]]
+name = "wake-on-lan"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ccf60b60ad7e5b1b37372c5134cbcab4db0706c231d212e0c643a077462bc8f"
+
 [[package]]
 name = "walkdir"
 version = "2.5.0"

README.md

@@ -1,88 +1,106 @@
 # CM Dashboard
 
-A real-time infrastructure monitoring system with intelligent status aggregation and email notifications, built with Rust and ZMQ.
+A high-performance Rust-based TUI dashboard for monitoring CMTEC infrastructure. Built with ZMQ-based metric collection and individual metrics architecture.
 
-## Current Implementation
+## Features
 
-This is a complete rewrite implementing an **individual metrics architecture** where:
+### Core Monitoring
+- **Real-time metrics**: CPU, RAM, Storage, and Service status
+- **Multi-host support**: Monitor multiple servers from single dashboard  
+- **Service management**: Start/stop services with intelligent status tracking
+- **NixOS integration**: System rebuild via SSH + tmux popup
+- **Backup monitoring**: Borgbackup status and scheduling
+- **Email notifications**: Intelligent batching prevents spam
 
-- **Agent** collects individual metrics (e.g., `cpu_load_1min`, `memory_usage_percent`) and calculates status
-- **Dashboard** subscribes to specific metrics and composes widgets
-- **Status Aggregation** provides intelligent email notifications with batching
-- **Persistent Cache** prevents false notifications on restart
+### User-Stopped Service Tracking
+Services stopped via the dashboard are intelligently tracked to prevent false alerts:
 
-## Dashboard Interface
+- **Smart status reporting**: User-stopped services show as Status::OK instead of Warning
+- **Persistent storage**: Tracking survives agent restarts via JSON storage
+- **Automatic management**: Flags cleared when services restarted via dashboard
+- **Maintenance friendly**: No false alerts during intentional service operations
+
+## Architecture
+
+### Individual Metrics Philosophy
+- **Agent**: Collects individual metrics, calculates status using thresholds
+- **Dashboard**: Subscribes to specific metrics, composes widgets from individual data
+- **ZMQ Communication**: Efficient real-time metric transmission
+- **Status Aggregation**: Host-level status calculated from all service metrics
+
+### Components
+
+```
+┌─────────────────┐    ZMQ     ┌─────────────────┐
+│                 │◄──────────►│                 │
+│   Agent         │  Metrics   │   Dashboard     │
+│   - Collectors  │            │   - TUI         │
+│   - Status      │            │   - Widgets     │
+│   - Tracking    │            │   - Commands    │
+│                 │            │                 │
+└─────────────────┘            └─────────────────┘
+         │                              │
+         ▼                              ▼
+┌─────────────────┐            ┌─────────────────┐
+│ JSON Storage    │            │ SSH + tmux      │
+│ - User-stopped  │            │ - Remote rebuild│
+│ - Cache         │            │ - Process       │
+│ - State         │            │   isolation     │
+└─────────────────┘            └─────────────────┘
+```
+
+### Service Control Flow
+
+1. **User Action**: Dashboard sends `UserStart`/`UserStop` commands
+2. **Agent Processing**: 
+   - Marks service as user-stopped (if stopping)
+   - Executes `systemctl start/stop service`
+   - Syncs state to global tracker
+3. **Status Calculation**: 
+   - Systemd collector checks user-stopped flag
+   - Reports Status::OK for user-stopped inactive services
+   - Normal Warning status for system failures
+
+## Interface
 
 ```
 cm-dashboard • ● cmbox ● srv01 ● srv02 ● steambox
 ┌system──────────────────────────────┐┌services─────────────────────────────────────────┐
-│CPU:                                ││Service:                  Status:  RAM:   Disk:  │
-│● Load: 0.10 0.52 0.88 • 400.0 MHz  ││● docker                  active   27M    496MB  │
-│RAM:                                ││● docker-registry         active   19M    496MB  │
-│● Used: 30% 2.3GB/7.6GB             ││● gitea                   active   579M   2.6GB  │
-│● tmp: 0.0% 0B/2.0GB                ││● gitea-runner-default    active   11M    2.6GB  │
-│Disk nvme0n1:                       ││● haasp-core              active   9M     1MB    │
-│● Health: PASSED                    ││● haasp-mqtt              active   3M     1MB    │
-│● Usage @root: 8.3% • 75.4/906.2 GB ││● haasp-webgrid           active   10M    1MB    │
-│● Usage @boot: 5.9% • 0.1/1.0 GB    ││● immich-server           active   240M   45.1GB │
-│                                    ││● mosquitto               active   1M     1MB    │
-│                                    ││● mysql                   active   38M    225MB  │
-│                                    ││● nginx                   active   28M    24MB   │
-│                                    ││  ├─ ● gitea.cmtec.se     51ms                   │
-│                                    ││  ├─ ● haasp.cmtec.se     43ms                   │
-│                                    ││  ├─ ● haasp.net          43ms                   │
-│                                    ││  ├─ ● pages.cmtec.se     45ms                   │
-└────────────────────────────────────┘│  ├─ ● photos.cmtec.se    41ms                   │
-┌backup──────────────────────────────┐│  ├─ ● unifi.cmtec.se     46ms                   │
-│Latest backup:                      ││  ├─ ● vault.cmtec.se     47ms                   │
-│● Status: OK                        ││  ├─ ● www.kryddorten.se  81ms                   │
-│Duration: 54s • Last: 4h ago        ││  ├─ ● www.mariehall2.se  86ms                   │
-│Disk usage: 48.2GB/915.8GB          ││● postgresql              active   112M   357MB  │
-│P/N: Samsung SSD 870 QVO 1TB        ││● redis-immich            active   8M     45.1GB │
-│S/N: S5RRNF0W800639Y                ││● sshd                    active   2M     0      │
-│● gitea 2 archives 2.7GB            ││● unifi                   active   594M   495MB  │
-│● immich 2 archives 45.0GB          ││● vaultwarden             active   12M    1MB    │
-│● kryddorten 2 archives 67.6MB      ││                                                 │
-│● mariehall2 2 archives 321.8MB     ││                                                 │
-│● nixosbox 2 archives 4.5MB         ││                                                 │
-│● unifi 2 archives 2.9MB            ││                                                 │
-│● vaultwarden 2 archives 305kB      ││                                                 │
+│NixOS:                              ││Service:                  Status:  RAM:   Disk:  │
+│Build: 25.05.20251004.3bcc93c       ││● docker                  active   27M    496MB  │
+│Agent: v0.1.43                      ││● gitea                   active   579M   2.6GB  │
+│Active users: cm, simon             ││● nginx                   active   28M    24MB   │
+│CPU:                                ││  ├─ ● gitea.cmtec.se     51ms                   │
+│● Load: 0.10 0.52 0.88 • 3000MHz    ││  ├─ ● photos.cmtec.se    41ms                   │
+│RAM:                                ││● postgresql              active   112M   357MB  │
+│● Usage: 33% 2.6GB/7.6GB            ││● redis-immich            user-stopped           │
+│● /tmp: 0% 0B/2.0GB                 ││● sshd                    active   2M     0      │
+│Storage:                            ││● unifi                   active   594M   495MB  │
+│● root (Single):                    ││                                                 │
+│ ├─ ● nvme0n1 W: 1%                 ││                                                 │
+│ └─ ● 18% 167.4GB/928.2GB           ││                                                 │
 └────────────────────────────────────┘└─────────────────────────────────────────────────┘
 ```
 
-**Navigation**: `←→` switch hosts, `r` refresh, `q` quit
+### Navigation
+- **Tab**: Switch between hosts
+- **↑↓ or j/k**: Navigate services
+- **s**: Start selected service (UserStart)  
+- **S**: Stop selected service (UserStop)
+- **J**: Show service logs (journalctl in tmux popup)
+- **R**: Rebuild current host
+- **q**: Quit
 
-## Features
-
-- **Real-time monitoring** - Dashboard updates every 1-2 seconds
-- **Individual metric collection** - Granular data for flexible dashboard composition
-- **Intelligent status aggregation** - Host-level status calculated from all services
-- **Smart email notifications** - Batched, detailed alerts with service groupings
-- **Persistent state** - Prevents false notifications on restarts
-- **ZMQ communication** - Efficient agent-to-dashboard messaging
-- **Clean TUI** - Terminal-based dashboard with color-coded status indicators
-
-## Architecture
-
-### Core Components
-
-- **Agent** (`cm-dashboard-agent`) - Collects metrics and sends via ZMQ
-- **Dashboard** (`cm-dashboard`) - Real-time TUI display consuming metrics
-- **Shared** (`cm-dashboard-shared`) - Common types and protocol
-- **Status Aggregation** - Intelligent batching and notification management
-- **Persistent Cache** - Maintains state across restarts
-
-### Status Levels
-
-- **🟢 Ok** - Service running normally
-- **🔵 Pending** - Service starting/stopping/reloading
-- **🟡 Warning** - Service issues (high load, memory, disk usage)
-- **🔴 Critical** - Service failed or critical thresholds exceeded
-- **❓ Unknown** - Service state cannot be determined
+### Status Indicators
+- **Green ●**: Active service
+- **Yellow ◐**: Inactive service (system issue)
+- **Red ◯**: Failed service
+- **Blue arrows**: Service transitioning (↑ starting, ↓ stopping, ↻ restarting)
+- **"user-stopped"**: Service stopped via dashboard (Status::OK)
 
 ## Quick Start
 
-### Build
+### Building
 
 ```bash
 # With Nix (recommended)
@@ -93,21 +111,20 @@ sudo apt install libssl-dev pkg-config  # Ubuntu/Debian
 cargo build --workspace
 ```
 
-### Run
+### Running
 
 ```bash
-# Start agent (requires configuration file)
+# Start agent (requires configuration)
 ./target/debug/cm-dashboard-agent --config /etc/cm-dashboard/agent.toml
 
-# Start dashboard
-./target/debug/cm-dashboard --config /path/to/dashboard.toml
+# Start dashboard (inside tmux session)
+tmux
+./target/debug/cm-dashboard --config /etc/cm-dashboard/dashboard.toml
 ```
 
 ## Configuration
 
-### Agent Configuration (`agent.toml`)
-
-The agent requires a comprehensive TOML configuration file:
+### Agent Configuration
 
 ```toml
 collection_interval_seconds = 2
@@ -116,50 +133,27 @@ collection_interval_seconds = 2
 publisher_port = 6130
 command_port = 6131
 bind_address = "0.0.0.0"
-timeout_ms = 5000
-heartbeat_interval_ms = 30000
+transmission_interval_seconds = 2
 
 [collectors.cpu]
 enabled = true
 interval_seconds = 2
-load_warning_threshold = 9.0
+load_warning_threshold = 5.0
 load_critical_threshold = 10.0
-temperature_warning_threshold = 100.0
-temperature_critical_threshold = 110.0
 
 [collectors.memory]
 enabled = true
 interval_seconds = 2
 usage_warning_percent = 80.0
-usage_critical_percent = 95.0
-
-[collectors.disk]
-enabled = true
-interval_seconds = 300
-usage_warning_percent = 80.0
 usage_critical_percent = 90.0
 
-[[collectors.disk.filesystems]]
-name = "root"
-uuid = "4cade5ce-85a5-4a03-83c8-dfd1d3888d79"
-mount_point = "/"
-fs_type = "ext4"
-monitor = true
-
 [collectors.systemd]
 enabled = true
 interval_seconds = 10
-memory_warning_mb = 1000.0
-memory_critical_mb = 2000.0
-service_name_filters = [
-  "nginx*", "postgresql*", "redis*", "docker*", "sshd*", 
-  "gitea*", "immich*", "haasp*", "mosquitto*", "mysql*", 
-  "unifi*", "vaultwarden*"
-]
-excluded_services = [
-  "nginx-config-reload", "sshd-keygen", "systemd-", 
-  "getty@", "user@", "dbus-", "NetworkManager-"
-]
+service_name_filters = ["nginx*", "postgresql*", "docker*", "sshd*"]
+excluded_services = ["nginx-config-reload", "systemd-", "getty@"]
+nginx_latency_critical_ms = 1000.0
+http_timeout_seconds = 10
 
 [notifications]
 enabled = true
@@ -167,251 +161,202 @@ smtp_host = "localhost"
 smtp_port = 25
 from_email = "{hostname}@example.com"
 to_email = "admin@example.com"
-rate_limit_minutes = 0
-trigger_on_warnings = true
-trigger_on_failures = true
-recovery_requires_all_ok = true
-suppress_individual_recoveries = true
-
-[status_aggregation]
-enabled = true
-aggregation_method = "worst_case"
-notification_interval_seconds = 30
-
-[cache]
-persist_path = "/var/lib/cm-dashboard/cache.json"
+aggregation_interval_seconds = 30
 ```
 
-### Dashboard Configuration (`dashboard.toml`)
+### Dashboard Configuration
 
 ```toml
 [zmq]
-hosts = [
-  { name = "server1", address = "192.168.1.100", port = 6130 },
-  { name = "server2", address = "192.168.1.101", port = 6130 }
-]
-connection_timeout_ms = 5000
-reconnect_interval_ms = 10000
+subscriber_ports = [6130]
+
+[hosts]
+predefined_hosts = ["cmbox", "srv01", "srv02"]
 
 [ui]
-refresh_interval_ms = 1000
-theme = "dark"
+ssh_user = "cm"
+rebuild_alias = "nixos-rebuild-cmtec"
 ```
 
-## Collectors
+## Technical Implementation
 
-The agent implements several specialized collectors:
+### Collectors
 
-### CPU Collector (`cpu.rs`)
+#### Systemd Collector
+- **Service Discovery**: Uses `systemctl list-unit-files` + `list-units --all`
+- **Status Calculation**: Checks user-stopped flag before assigning Warning status
+- **Memory Tracking**: Per-service memory usage via `systemctl show`
+- **Sub-services**: Nginx site latency, Docker containers
+- **User-stopped Integration**: `UserStoppedServiceTracker::is_service_user_stopped()`
 
-- Load average (1, 5, 15 minute)
-- CPU temperature monitoring
-- Real-time process monitoring (top CPU consumers)
-- Status calculation with configurable thresholds
+#### User-Stopped Service Tracker
+- **Storage**: `/var/lib/cm-dashboard/user-stopped-services.json`
+- **Thread Safety**: Global singleton with `Arc<Mutex<>>`
+- **Persistence**: Automatic save on state changes
+- **Global Access**: Static methods for collector integration
 
-### Memory Collector (`memory.rs`)
+#### Other Collectors
+- **CPU**: Load average, temperature, frequency monitoring
+- **Memory**: RAM/swap usage, tmpfs monitoring  
+- **Disk**: Filesystem usage, SMART health data
+- **NixOS**: Build version, active users, agent version
+- **Backup**: Borgbackup repository status and metrics
 
-- RAM usage (total, used, available)
-- Swap monitoring
-- Real-time process monitoring (top RAM consumers)
-- Memory pressure detection
+### ZMQ Protocol
 
-### Disk Collector (`disk.rs`)
+```rust
+// Metric Message
+#[derive(Serialize, Deserialize)]
+pub struct MetricMessage {
+    pub hostname: String,
+    pub timestamp: u64,
+    pub metrics: Vec<Metric>,
+}
 
-- Filesystem usage per mount point
-- SMART health monitoring
-- Temperature and wear tracking
-- Configurable filesystem monitoring
+// Service Commands
+pub enum AgentCommand {
+    ServiceControl {
+        service_name: String,
+        action: ServiceAction,
+    },
+    SystemRebuild { /* SSH config */ },
+    CollectNow,
+}
 
-### Systemd Collector (`systemd.rs`)
+pub enum ServiceAction {
+    Start,           // System-initiated
+    Stop,            // System-initiated  
+    UserStart,       // User via dashboard (clears user-stopped)
+    UserStop,        // User via dashboard (marks user-stopped)
+    Status,
+}
+```
 
-- Service status monitoring (`active`, `inactive`, `failed`)
-- Memory usage per service
-- Service filtering and exclusions
-- Handles transitional states (`Status::Pending`)
+### Maintenance Mode
 
-### Backup Collector (`backup.rs`)
+Suppress notifications during planned maintenance:
 
-- Reads TOML status files from backup systems
-- Archive age verification
-- Disk usage tracking
-- Repository health monitoring
+```bash
+# Enable maintenance mode
+touch /tmp/cm-maintenance
+
+# Perform maintenance
+systemctl stop service
+# ... work ...
+systemctl start service  
+
+# Disable maintenance mode
+rm /tmp/cm-maintenance
+```
 
 ## Email Notifications
 
 ### Intelligent Batching
+- **Real-time dashboard**: Immediate status updates
+- **Batched emails**: Aggregated every 30 seconds
+- **Smart grouping**: Services organized by severity
+- **Recovery suppression**: Reduces notification spam
 
-The system implements smart notification batching to prevent email spam:
-
-- **Real-time dashboard updates** - Status changes appear immediately
-- **Batched email notifications** - Aggregated every 30 seconds
-- **Detailed groupings** - Services organized by severity
-
-### Example Alert Email
-
+### Example Alert
 ```
-Subject: Status Alert: 2 critical, 1 warning, 15 started
+Subject: Status Alert: 1 critical, 2 warnings, 0 recoveries
 
 Status Summary (30s duration)
 Host Status: Ok → Warning
 
-🔴 CRITICAL ISSUES (2):
-  postgresql: Ok → Critical
-  nginx: Warning → Critical
+🔴 CRITICAL ISSUES (1):
+  postgresql: Ok → Critical (memory usage 95%)
 
-🟡 WARNINGS (1):
-  redis: Ok → Warning (memory usage 85%)
+🟡 WARNINGS (2):
+  nginx: Ok → Warning (high load 8.5)
+  redis: user-stopped → Warning (restarted by system)
 
 ✅ RECOVERIES (0):
 
-🟢 SERVICE STARTUPS (15):
-  docker: Unknown → Ok
-  sshd: Unknown → Ok
-  ...
-
 --
-CM Dashboard Agent
-Generated at 2025-10-21 19:42:42 CET
+CM Dashboard Agent v0.1.43
 ```
 
-## Individual Metrics Architecture
-
-The system follows a **metrics-first architecture**:
-
-### Agent Side
-
-```rust
-// Agent collects individual metrics
-vec![
-    Metric::new("cpu_load_1min".to_string(), MetricValue::Float(2.5), Status::Ok),
-    Metric::new("memory_usage_percent".to_string(), MetricValue::Float(78.5), Status::Warning),
-    Metric::new("service_nginx_status".to_string(), MetricValue::String("active".to_string()), Status::Ok),
-]
-```
-
-### Dashboard Side
-
-```rust
-// Widgets subscribe to specific metrics
-impl Widget for CpuWidget {
-    fn update_from_metrics(&mut self, metrics: &[&Metric]) {
-        for metric in metrics {
-            match metric.name.as_str() {
-                "cpu_load_1min" => self.load_1min = metric.value.as_f32(),
-                "cpu_load_5min" => self.load_5min = metric.value.as_f32(),
-                "cpu_temperature_celsius" => self.temperature = metric.value.as_f32(),
-                _ => {}
-            }
-        }
-    }
-}
-```
-
-## Persistent Cache
-
-The cache system prevents false notifications:
-
-- **Automatic saving** - Saves when service status changes
-- **Persistent storage** - Maintains state across agent restarts
-- **Simple design** - No complex TTL or cleanup logic
-- **Status preservation** - Prevents duplicate notifications
-
 ## Development
 
 ### Project Structure
-
 ```
 cm-dashboard/
 ├── agent/                     # Metrics collection agent
 │   ├── src/
-│   │   ├── collectors/     # CPU, memory, disk, systemd, backup
+│   │   ├── collectors/        # CPU, memory, disk, systemd, backup, nixos
+│   │   ├── service_tracker.rs # User-stopped service tracking
 │   │   ├── status/            # Status aggregation and notifications
-│   │   ├── cache/          # Persistent metric caching
 │   │   ├── config/            # TOML configuration loading
-│   │   └── notifications/  # Email notification system
+│   │   └── communication/     # ZMQ message handling
 ├── dashboard/                 # TUI dashboard application  
 │   ├── src/
-│   │   ├── ui/widgets/     # CPU, memory, services, backup widgets
-│   │   ├── metrics/        # Metric storage and filtering
-│   │   └── communication/  # ZMQ metric consumption
+│   │   ├── ui/widgets/        # CPU, memory, services, backup, system
+│   │   ├── communication/     # ZMQ consumption and commands
+│   │   └── app.rs            # Main application loop
 ├── shared/                    # Shared types and utilities
 │   └── src/
-│       ├── metrics.rs      # Metric, Status, and Value types
+│       ├── metrics.rs         # Metric, Status, StatusTracker types
 │       ├── protocol.rs        # ZMQ message format
 │       └── cache.rs           # Cache configuration
-└── README.md              # This file
+└── CLAUDE.md                  # Development guidelines and rules
 ```
 
-### Building
-
+### Testing
 ```bash
-# Debug build
-cargo build --workspace
+# Build and test
+nix-shell -p openssl pkg-config --run "cargo build --workspace"
+nix-shell -p openssl pkg-config --run "cargo test --workspace"
 
-# Release build
-cargo build --workspace --release
-
-# Run tests
-cargo test --workspace
-
-# Check code formatting
-cargo fmt --all -- --check
-
-# Run clippy linter
+# Code quality
+cargo fmt --all
 cargo clippy --workspace -- -D warnings
 ```
 
-### Dependencies
+## Deployment
 
-- **tokio** - Async runtime
-- **zmq** - Message passing between agent and dashboard
-- **ratatui** - Terminal user interface
-- **serde** - Serialization for metrics and config
-- **anyhow/thiserror** - Error handling
-- **tracing** - Structured logging
-- **lettre** - SMTP email notifications
-- **clap** - Command-line argument parsing
-- **toml** - Configuration file parsing
+### Automated Binary Releases
+```bash
+# Create new release
+cd ~/projects/cm-dashboard
+git tag v0.1.X
+git push origin v0.1.X
+```
 
-## NixOS Integration
+This triggers automated:
+- Static binary compilation with `RUSTFLAGS="-C target-feature=+crt-static"`
+- GitHub-style release creation
+- Tarball upload to Gitea
 
-This project is designed for declarative deployment via NixOS:
-
-### Configuration Generation
-
-The NixOS module automatically generates the agent configuration:
+### NixOS Integration
+Update `~/projects/nixosbox/hosts/common/cm-dashboard.nix`:
 
 ```nix
-# hosts/common/cm-dashboard.nix
-services.cm-dashboard-agent = {
-  enable = true;
-  port = 6130;
+version = "v0.1.43";
+src = pkgs.fetchurl {
+  url = "https://gitea.cmtec.se/cm/cm-dashboard/releases/download/${version}/cm-dashboard-linux-x86_64.tar.gz";
+  sha256 = "sha256-HASH";
 };
 ```
 
-### Deployment
-
+Get hash via:
 ```bash
-# Update NixOS configuration
-git add hosts/common/cm-dashboard.nix
-git commit -m "Update cm-dashboard configuration"
-git push
-
-# Rebuild system (user-performed)
-sudo nixos-rebuild switch --flake .
+cd ~/projects/nixosbox
+nix-build --no-out-link -E 'with import <nixpkgs> {}; fetchurl {
+  url = "URL_HERE";
+  sha256 = "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
+}' 2>&1 | grep "got:"
 ```
 
 ## Monitoring Intervals
 
-- **CPU/Memory**: 2 seconds (real-time monitoring)
-- **Disk usage**: 300 seconds (5 minutes)
-- **Systemd services**: 10 seconds
-- **SMART health**: 600 seconds (10 minutes)
-- **Backup status**: 60 seconds (1 minute)
-- **Email notifications**: 30 seconds (batched)
-- **Dashboard updates**: 1 second (real-time display)
+- **Metrics Collection**: 2 seconds (CPU, memory, services)
+- **Metric Transmission**: 2 seconds (ZMQ publish)
+- **Dashboard Updates**: 1 second (UI refresh)
+- **Email Notifications**: 30 seconds (batched)
+- **Disk Monitoring**: 300 seconds (5 minutes)
+- **Service Discovery**: 300 seconds (5 minutes cache)
 
 ## License
 
-MIT License - see LICENSE file for details
-
+MIT License - see LICENSE file for details.

TODO.md

@@ -1,63 +0,0 @@
-# TODO
-
-## Systemd filtering (agent)
-
-- remove user systemd collection
-- reduce number of systemctl call
-- Cahnge so only services in include list are detected
-- Filter on exact name
-- Add support for "\*" in filtering
-
-## System panel (agent/dashboard)
-
-use following layout:
-'''
-NixOS:
-Build: xxxxxx
-Agen: xxxxxx
-CPU:
-● Load: 0.02 0.31 0.86
-└─ Freq: 3000MHz
-RAM:
-● Usage: 33% 2.6GB/7.6GB  
- └─ ● /tmp: 0% 0B/2.0GB
-Storage:
-● /:  
- ├─ ● nvme0n1 T: 40C • W: 4%  
- └─ ● 8% 75.0GB/906.2GB
-'''
-
-- Add support to show login/active users
-- Add support to show timestamp/version for latest nixos rebuild
-
-## Backup panel (dashboard)
-
-use following layout:
-'''
-Latest backup:  
-● <timestamp>
-└─ Duration: 1.3m
-Disk:
-● Samsung SSD 870 QVO 1TB  
- ├─ S/N: S5RRNF0W800639Y
-└─ Usage: 50.5GB/915.8GB
-Repos:
-● gitea (4) 5.1GB  
-● immich (4) 45.0GB  
-● kryddorten (4) 67.8MB  
-● mariehall2 (4) 322.7MB
-● nixosbox (4) 5.5MB  
-● unifi (4) 5.7MB  
-● vaultwarden (4) 508kB
-'''
-
-## Keyboard navigation and scrolling (dashboard)
-
-- Add keyboard navigation between panels "Shift-Tab"
-- Add lower statusbar with dynamic updated shortcuts when switchng between panels
-
-## Remote execution (agent/dashboard)
-
-- Add support for send command via dashboard to agent to do nixos rebuid
-- Add support for navigating services in dashboard and trigger start/stop/restart
-- Add support for trigger backup

agent/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard-agent"
-version = "0.1.19"
+version = "0.1.66"
 edition = "2021"
 
 [dependencies]

agent/src/agent.rs

@@ -8,6 +8,7 @@ use crate::communication::{AgentCommand, ServiceAction, ZmqHandler};
 use crate::config::AgentConfig;
 use crate::metrics::MetricCollectionManager;
 use crate::notifications::NotificationManager;
+use crate::service_tracker::UserStoppedServiceTracker;
 use crate::status::HostStatusManager;
 use cm_dashboard_shared::{Metric, MetricMessage, MetricValue, Status};
 
@@ -18,6 +19,7 @@ pub struct Agent {
     metric_manager: MetricCollectionManager,
     notification_manager: NotificationManager,
     host_status_manager: HostStatusManager,
+    service_tracker: UserStoppedServiceTracker,
 }
 
 impl Agent {
@@ -50,6 +52,10 @@ impl Agent {
         let host_status_manager = HostStatusManager::new(config.status_aggregation.clone());
         info!("Host status manager initialized");
 
+        // Initialize user-stopped service tracker
+        let service_tracker = UserStoppedServiceTracker::init_global()?;
+        info!("User-stopped service tracker initialized");
+
         Ok(Self {
             hostname,
             config,
@@ -57,6 +63,7 @@ impl Agent {
             metric_manager,
             notification_manager,
             host_status_manager,
+            service_tracker,
         })
     }
 
@@ -71,10 +78,12 @@ impl Agent {
             info!("Initial metric collection completed - all data cached and ready");
         }
 
-        // Separate intervals for collection and transmission
+        // Separate intervals for collection, transmission, heartbeat, and email notifications
         let mut collection_interval =
             interval(Duration::from_secs(self.config.collection_interval_seconds));
         let mut transmission_interval = interval(Duration::from_secs(self.config.zmq.transmission_interval_seconds));
+        let mut heartbeat_interval = interval(Duration::from_secs(self.config.zmq.heartbeat_interval_seconds));
+        let mut notification_interval = interval(Duration::from_secs(self.config.notifications.aggregation_interval_seconds));
 
         loop {
             tokio::select! {
@@ -85,12 +94,19 @@ impl Agent {
                     }
                 }
                 _ = transmission_interval.tick() => {
-                    // Send all metrics via ZMQ and process notifications immediately
+                    // Send all metrics via ZMQ (dashboard updates only)
                     if let Err(e) = self.broadcast_all_metrics().await {
                         error!("Failed to broadcast metrics: {}", e);
                     }
-                    
-                    // Process notifications immediately with each transmission
+                }
+                _ = heartbeat_interval.tick() => {
+                    // Send standalone heartbeat for host connectivity detection
+                    if let Err(e) = self.send_heartbeat().await {
+                        error!("Failed to send heartbeat: {}", e);
+                    }
+                }
+                _ = notification_interval.tick() => {
+                    // Process batched email notifications (separate from dashboard updates)
                     if let Err(e) = self.host_status_manager.process_pending_notifications(&mut self.notification_manager).await {
                         error!("Failed to process pending notifications: {}", e);
                     }
@@ -125,7 +141,7 @@ impl Agent {
 
         info!("Force collected and cached {} metrics", metrics.len());
 
-        // Process metrics through status manager (don't trigger transmission on startup)
+        // Process metrics through status manager (collect status data at startup)
         let _status_changed = self.process_metrics(&metrics).await;
 
         Ok(())
@@ -158,10 +174,10 @@ impl Agent {
     }
 
     async fn broadcast_all_metrics(&mut self) -> Result<()> {
-        debug!("Broadcasting all metrics via ZMQ");
+        debug!("Broadcasting cached metrics via ZMQ");
 
-        // Get all current metrics from collectors
-        let mut metrics = self.metric_manager.collect_all_metrics().await?;
+        // Get cached metrics (no fresh collection)
+        let mut metrics = self.metric_manager.get_cached_metrics();
 
         // Add the host status summary metric from status manager
         let host_status_metric = self.host_status_manager.get_host_status_metric();
@@ -171,12 +187,19 @@ impl Agent {
         let version_metric = self.get_agent_version_metric();
         metrics.push(version_metric);
 
+        // Add heartbeat metric for host connectivity detection
+        let heartbeat_metric = self.get_heartbeat_metric();
+        metrics.push(heartbeat_metric);
+
+        // Check for user-stopped services that are now active and clear their flags
+        self.clear_user_stopped_flags_for_active_services(&metrics);
+
         if metrics.is_empty() {
             debug!("No metrics to broadcast");
             return Ok(());
         }
 
-        debug!("Broadcasting {} metrics (including host status summary)", metrics.len());
+        debug!("Broadcasting {} cached metrics (including host status summary)", metrics.len());
 
         // Create and send message with all current data
         let message = MetricMessage::new(self.hostname.clone(), metrics);
@@ -189,6 +212,12 @@ impl Agent {
     async fn process_metrics(&mut self, metrics: &[Metric]) -> bool {
         let mut status_changed = false;
         for metric in metrics {
+            // Filter excluded metrics from email notification processing only
+            if self.config.notifications.exclude_email_metrics.contains(&metric.name) {
+                debug!("Excluding metric '{}' from email notification processing", metric.name);
+                continue;
+            }
+            
             if self.host_status_manager.process_metric(metric, &mut self.notification_manager).await {
                 status_changed = true;
             }
@@ -214,6 +243,35 @@ impl Agent {
         format!("v{}", env!("CARGO_PKG_VERSION"))
     }
 
+    /// Create heartbeat metric for host connectivity detection
+    fn get_heartbeat_metric(&self) -> Metric {
+        use std::time::{SystemTime, UNIX_EPOCH};
+        
+        let timestamp = SystemTime::now()
+            .duration_since(UNIX_EPOCH)
+            .unwrap()
+            .as_secs();
+        
+        Metric::new(
+            "agent_heartbeat".to_string(),
+            MetricValue::Integer(timestamp as i64),
+            Status::Ok,
+        )
+    }
+
+    /// Send standalone heartbeat for connectivity detection
+    async fn send_heartbeat(&mut self) -> Result<()> {
+        let heartbeat_metric = self.get_heartbeat_metric();
+        let message = MetricMessage::new(
+            self.hostname.clone(),
+            vec![heartbeat_metric],
+        );
+
+        self.zmq_handler.publish_metrics(&message).await?;
+        debug!("Sent standalone heartbeat for connectivity detection");
+        Ok(())
+    }
+
     async fn handle_commands(&mut self) -> Result<()> {
         // Try to receive commands (non-blocking)
         match self.zmq_handler.try_receive_command() {
@@ -268,20 +326,35 @@ impl Agent {
     }
 
     /// Handle systemd service control commands
-    async fn handle_service_control(&self, service_name: &str, action: &ServiceAction) -> Result<()> {
-        let action_str = match action {
-            ServiceAction::Start => "start",
-            ServiceAction::Stop => "stop", 
-            ServiceAction::Restart => "restart",
-            ServiceAction::Status => "status",
+    async fn handle_service_control(&mut self, service_name: &str, action: &ServiceAction) -> Result<()> {
+        let (action_str, is_user_action) = match action {
+            ServiceAction::Start => ("start", false),
+            ServiceAction::Stop => ("stop", false), 
+            ServiceAction::Status => ("status", false),
+            ServiceAction::UserStart => ("start", true),
+            ServiceAction::UserStop => ("stop", true),
         };
 
-        info!("Executing systemctl {} {}", action_str, service_name);
+        info!("Executing systemctl {} {} (user action: {})", action_str, service_name, is_user_action);
+
+        // Handle user-stopped service tracking before systemctl execution (stop only)
+        match action {
+            ServiceAction::UserStop => {
+                info!("Marking service '{}' as user-stopped", service_name);
+                if let Err(e) = self.service_tracker.mark_user_stopped(service_name) {
+                    error!("Failed to mark service as user-stopped: {}", e);
+                } else {
+                    // Sync to global tracker
+                    UserStoppedServiceTracker::update_global(&self.service_tracker);
+                }
+            }
+            _ => {}
+        }
 
         let output = tokio::process::Command::new("sudo")
             .arg("systemctl")
             .arg(action_str)
-            .arg(service_name)
+            .arg(format!("{}.service", service_name))
             .output()
             .await?;
 
@@ -290,6 +363,9 @@ impl Agent {
             if !output.stdout.is_empty() {
                 debug!("stdout: {}", String::from_utf8_lossy(&output.stdout));
             }
+            
+            // Note: User-stopped flag will be cleared by systemd collector 
+            // when service actually reaches 'active' state, not here
         } else {
             let stderr = String::from_utf8_lossy(&output.stderr);
             error!("Service {} {} failed: {}", service_name, action_str, stderr);
@@ -297,13 +373,45 @@ impl Agent {
         }
 
         // Force refresh metrics after service control to update service status
-        if matches!(action, ServiceAction::Start | ServiceAction::Stop | ServiceAction::Restart) {
-            info!("Triggering metric refresh after service control");
-            // Note: We can't call self.collect_metrics_only() here due to borrowing issues
-            // The next metric collection cycle will pick up the changes
+        if matches!(action, ServiceAction::Start | ServiceAction::Stop | ServiceAction::UserStart | ServiceAction::UserStop) {
+            info!("Triggering immediate metric refresh after service control");
+            if let Err(e) = self.collect_metrics_only().await {
+                error!("Failed to refresh metrics after service control: {}", e);
+            } else {
+                info!("Service status refreshed immediately after {} {}", action_str, service_name);
+            }
         }
 
         Ok(())
     }
 
+    /// Check metrics for user-stopped services that are now active and clear their flags
+    fn clear_user_stopped_flags_for_active_services(&mut self, metrics: &[Metric]) {
+        for metric in metrics {
+            // Look for service status metrics that are active
+            if metric.name.starts_with("service_") && metric.name.ends_with("_status") {
+                if let MetricValue::String(status) = &metric.value {
+                    if status == "active" {
+                        // Extract service name from metric name (service_nginx_status -> nginx)
+                        let service_name = metric.name
+                            .strip_prefix("service_")
+                            .and_then(|s| s.strip_suffix("_status"))
+                            .unwrap_or("");
+                        
+                        if !service_name.is_empty() && UserStoppedServiceTracker::is_service_user_stopped(service_name) {
+                            info!("Service '{}' is now active - clearing user-stopped flag", service_name);
+                            if let Err(e) = self.service_tracker.clear_user_stopped(service_name) {
+                                error!("Failed to clear user-stopped flag for '{}': {}", service_name, e);
+                            } else {
+                                // Sync to global tracker
+                                UserStoppedServiceTracker::update_global(&self.service_tracker);
+                                debug!("Cleared user-stopped flag for service '{}'", service_name);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
 }

agent/src/collectors/backup.rs

@@ -140,6 +140,7 @@ impl Collector for BackupCollector {
                 Status::Warning => "warning".to_string(),
                 Status::Critical => "critical".to_string(),
                 Status::Unknown => "unknown".to_string(),
+                Status::Offline => "offline".to_string(),
             }),
             status: overall_status,
             timestamp,
@@ -202,6 +203,7 @@ impl Collector for BackupCollector {
                     Status::Warning => "warning".to_string(),
                     Status::Critical => "critical".to_string(),
                     Status::Unknown => "unknown".to_string(),
+                    Status::Offline => "offline".to_string(),
                 }),
                 status: service_status,
                 timestamp,

agent/src/collectors/disk.rs

@@ -556,8 +556,8 @@ impl Collector for DiskCollector {
 
                 // Drive wear level (for SSDs)
                 if let Some(wear) = drive.wear_level {
-                    let wear_status = if wear >= 90.0 { Status::Critical }
-                                     else if wear >= 80.0 { Status::Warning }
+                    let wear_status = if wear >= self.config.wear_critical_percent { Status::Critical }
+                                     else if wear >= self.config.wear_warning_percent { Status::Warning }
                                      else { Status::Ok };
                     
                     metrics.push(Metric {

agent/src/collectors/memory.rs

@@ -187,7 +187,7 @@ impl MemoryCollector {
         }
 
         // Monitor tmpfs (/tmp) usage
-        if let Ok(tmpfs_metrics) = self.get_tmpfs_metrics() {
+        if let Ok(tmpfs_metrics) = self.get_tmpfs_metrics(status_tracker) {
             metrics.extend(tmpfs_metrics);
         }
 
@@ -195,7 +195,7 @@ impl MemoryCollector {
     }
 
     /// Get tmpfs (/tmp) usage metrics  
-    fn get_tmpfs_metrics(&self) -> Result<Vec<Metric>, CollectorError> {
+    fn get_tmpfs_metrics(&self, status_tracker: &mut StatusTracker) -> Result<Vec<Metric>, CollectorError> {
         use std::process::Command;
         
         let output = Command::new("df")
@@ -249,12 +249,15 @@ impl MemoryCollector {
         let mut metrics = Vec::new();
         let timestamp = chrono::Utc::now().timestamp() as u64;
 
+        // Calculate status using same thresholds as main memory
+        let tmp_status = self.calculate_usage_status("memory_tmp_usage_percent", usage_percent, status_tracker);
+        
         metrics.push(Metric {
             name: "memory_tmp_usage_percent".to_string(),
             value: MetricValue::Float(usage_percent),
             unit: Some("%".to_string()),
             description: Some("tmpfs /tmp usage percentage".to_string()),
-            status: Status::Ok,
+            status: tmp_status,
             timestamp,
         });
 

agent/src/collectors/nixos.rs

@@ -10,7 +10,6 @@ use crate::config::NixOSConfig;
 /// 
 /// Collects NixOS-specific system information including:
 /// - NixOS version and build information
-/// - Currently active/logged in users
 pub struct NixOSCollector {
 }
 
@@ -38,6 +37,22 @@ impl NixOSCollector {
     }
 
     /// Get configuration hash from deployed nix store system
+    /// Get git commit hash from rebuild process
+    fn get_git_commit(&self) -> Result<String, Box<dyn std::error::Error>> {
+        let commit_file = "/var/lib/cm-dashboard/git-commit";
+        match std::fs::read_to_string(commit_file) {
+            Ok(content) => {
+                let commit_hash = content.trim();
+                if commit_hash.len() >= 7 {
+                    Ok(commit_hash.to_string())
+                } else {
+                    Err("Git commit hash too short".into())
+                }
+            }
+            Err(e) => Err(format!("Failed to read git commit file: {}", e).into())
+        }
+    }
+
     fn get_config_hash(&self) -> Result<String, Box<dyn std::error::Error>> {
         // Read the symlink target of /run/current-system to get nix store path
         let output = Command::new("readlink")
@@ -65,27 +80,6 @@ impl NixOSCollector {
         Err("Could not extract hash from nix store path".into())
     }
 
-    /// Get currently active users
-    fn get_active_users(&self) -> Result<Vec<String>, Box<dyn std::error::Error>> {
-        let output = Command::new("who").output()?;
-        
-        if !output.status.success() {
-            return Err("who command failed".into());
-        }
-
-        let who_output = String::from_utf8_lossy(&output.stdout);
-        let mut users = std::collections::HashSet::new();
-
-        for line in who_output.lines() {
-            if let Some(username) = line.split_whitespace().next() {
-                if !username.is_empty() {
-                    users.insert(username.to_string());
-                }
-            }
-        }
-
-        Ok(users.into_iter().collect())
-    }
 }
 
 #[async_trait]
@@ -96,56 +90,31 @@ impl Collector for NixOSCollector {
         let mut metrics = Vec::new();
         let timestamp = chrono::Utc::now().timestamp() as u64;
 
-        // Collect NixOS build information (config hash)
-        match self.get_config_hash() {
-            Ok(config_hash) => {
+        // Collect git commit information (shows what's actually deployed)
+        match self.get_git_commit() {
+            Ok(git_commit) => {
                 metrics.push(Metric {
                     name: "system_nixos_build".to_string(),
-                    value: MetricValue::String(config_hash),
+                    value: MetricValue::String(git_commit),
                     unit: None,
-                    description: Some("NixOS deployed configuration hash".to_string()),
+                    description: Some("Git commit hash of deployed configuration".to_string()),
                     status: Status::Ok,
                     timestamp,
                 });
             }
             Err(e) => {
-                debug!("Failed to get config hash: {}", e);
+                debug!("Failed to get git commit: {}", e);
                 metrics.push(Metric {
                     name: "system_nixos_build".to_string(),
                     value: MetricValue::String("unknown".to_string()),
                     unit: None,
-                    description: Some("NixOS config hash (failed to detect)".to_string()),
+                    description: Some("Git commit hash (failed to detect)".to_string()),
                     status: Status::Unknown,
                     timestamp,
                 });
             }
         }
 
-        // Collect active users
-        match self.get_active_users() {
-            Ok(users) => {
-                let users_str = users.join(", ");
-                metrics.push(Metric {
-                    name: "system_active_users".to_string(),
-                    value: MetricValue::String(users_str),
-                    unit: None,
-                    description: Some("Currently active users".to_string()),
-                    status: Status::Ok,
-                    timestamp,
-                });
-            }
-            Err(e) => {
-                debug!("Failed to get active users: {}", e);
-                metrics.push(Metric {
-                    name: "system_active_users".to_string(),
-                    value: MetricValue::String("unknown".to_string()),
-                    unit: None,
-                    description: Some("Active users (failed to detect)".to_string()),
-                    status: Status::Unknown,
-                    timestamp,
-                });
-            }
-        }
 
         // Collect config hash
         match self.get_config_hash() {

agent/src/collectors/systemd.rs

@@ -8,6 +8,7 @@ use tracing::debug;
 
 use super::{Collector, CollectorError};
 use crate::config::SystemdConfig;
+use crate::service_tracker::UserStoppedServiceTracker;
 
 /// Systemd collector for monitoring systemd services
 pub struct SystemdCollector {
@@ -136,8 +137,21 @@ impl SystemdCollector {
     /// Auto-discover interesting services to monitor (internal version that doesn't update state)
     fn discover_services_internal(&self) -> Result<(Vec<String>, std::collections::HashMap<String, ServiceStatusInfo>)> {
         debug!("Starting systemd service discovery with status caching");
-        // Get all services (includes inactive, running, failed - everything)
-        let units_output = Command::new("systemctl")
+        
+        // First: Get all service unit files (includes services that have never been started)
+        let unit_files_output = Command::new("systemctl")
+            .arg("list-unit-files")
+            .arg("--type=service")
+            .arg("--no-pager")
+            .arg("--plain")
+            .output()?;
+
+        if !unit_files_output.status.success() {
+            return Err(anyhow::anyhow!("systemctl list-unit-files command failed"));
+        }
+
+        // Second: Get runtime status of all units
+        let units_status_output = Command::new("systemctl")
             .arg("list-units")
             .arg("--type=service")
             .arg("--all")
@@ -145,22 +159,33 @@ impl SystemdCollector {
             .arg("--plain")
             .output()?;
 
-        if !units_output.status.success() {
-            return Err(anyhow::anyhow!("systemctl system command failed"));
+        if !units_status_output.status.success() {
+            return Err(anyhow::anyhow!("systemctl list-units command failed"));
         }
 
-        let units_str = String::from_utf8(units_output.stdout)?;
+        let unit_files_str = String::from_utf8(unit_files_output.stdout)?;
+        let units_status_str = String::from_utf8(units_status_output.stdout)?;
         let mut services = Vec::new();
 
         // Use configuration instead of hardcoded values
         let excluded_services = &self.config.excluded_services;
         let service_name_filters = &self.config.service_name_filters;
 
-        // Parse all services and cache their status information
+        // Parse all service unit files to get complete service list
         let mut all_service_names = std::collections::HashSet::new();
-        let mut status_cache = std::collections::HashMap::new();
         
-        for line in units_str.lines() {
+        for line in unit_files_str.lines() {
+            let fields: Vec<&str> = line.split_whitespace().collect();
+            if fields.len() >= 2 && fields[0].ends_with(".service") {
+                let service_name = fields[0].trim_end_matches(".service");
+                all_service_names.insert(service_name.to_string());
+                debug!("Found service unit file: {}", service_name);
+            }
+        }
+
+        // Parse runtime status for all units
+        let mut status_cache = std::collections::HashMap::new();
+        for line in units_status_str.lines() {
             let fields: Vec<&str> = line.split_whitespace().collect();
             if fields.len() >= 4 && fields[0].ends_with(".service") {
                 let service_name = fields[0].trim_end_matches(".service");
@@ -177,8 +202,19 @@ impl SystemdCollector {
                     sub_state: sub_state.clone(),
                 });
 
-                all_service_names.insert(service_name.to_string());
-                debug!("Parsed service: {} (load:{}, active:{}, sub:{})", service_name, load_state, active_state, sub_state);
+                debug!("Got runtime status for service: {} (load:{}, active:{}, sub:{})", service_name, load_state, active_state, sub_state);
+            }
+        }
+
+        // For services found in unit files but not in runtime status, set default inactive status
+        for service_name in &all_service_names {
+            if !status_cache.contains_key(service_name) {
+                status_cache.insert(service_name.to_string(), ServiceStatusInfo {
+                    load_state: "not-loaded".to_string(),
+                    active_state: "inactive".to_string(),
+                    sub_state: "dead".to_string(),
+                });
+                debug!("Service {} found in unit files but not runtime - marked as inactive", service_name);
             }
         }
 
@@ -318,13 +354,37 @@ impl SystemdCollector {
         Ok((active_status, detailed_info))
     }
 
-    /// Calculate service status
-    fn calculate_service_status(&self, active_status: &str) -> Status {
+    /// Calculate service status, taking user-stopped services into account
+    fn calculate_service_status(&self, service_name: &str, active_status: &str) -> Status {
         match active_status.to_lowercase().as_str() {
-            "active" => Status::Ok,
-            "inactive" | "dead" => Status::Warning,
+            "active" => {
+                // If service is now active and was marked as user-stopped, clear the flag
+                if UserStoppedServiceTracker::is_service_user_stopped(service_name) {
+                    debug!("Service '{}' is now active - clearing user-stopped flag", service_name);
+                    // Note: We can't directly clear here because this is a read-only context
+                    // The agent will need to handle this differently
+                }
+                Status::Ok
+            },
+            "inactive" | "dead" => {
+                // Check if this service was stopped by user action
+                if UserStoppedServiceTracker::is_service_user_stopped(service_name) {
+                    debug!("Service '{}' is inactive but marked as user-stopped - treating as OK", service_name);
+                    Status::Ok
+                } else {
+                    Status::Warning
+                }
+            },
             "failed" | "error" => Status::Critical,
-            "activating" | "deactivating" | "reloading" | "start" | "stop" | "restart" => Status::Pending,
+            "activating" | "deactivating" | "reloading" | "start" | "stop" | "restart" => {
+                // For user-stopped services that are transitioning, keep them as OK during transition
+                if UserStoppedServiceTracker::is_service_user_stopped(service_name) {
+                    debug!("Service '{}' is transitioning but was user-stopped - treating as OK", service_name);
+                    Status::Ok
+                } else {
+                    Status::Pending
+                }
+            },
             _ => Status::Unknown,
         }
     }
@@ -445,7 +505,7 @@ impl Collector for SystemdCollector {
         for service in &monitored_services {
             match self.get_service_status(service) {
                 Ok((active_status, _detailed_info)) => {
-                    let status = self.calculate_service_status(&active_status);
+                    let status = self.calculate_service_status(service, &active_status);
 
                     // Individual service status metric
                     metrics.push(Metric {
@@ -520,10 +580,8 @@ impl SystemdCollector {
         for (site_name, url) in &sites {
             match self.check_site_latency(url) {
                 Ok(latency_ms) => {
-                    let status = if latency_ms < 500.0 {
+                    let status = if latency_ms < self.config.nginx_latency_critical_ms {
                         Status::Ok
-                    } else if latency_ms < 2000.0 {
-                        Status::Warning
                     } else {
                         Status::Critical
                     };

agent/src/communication/mod.rs

@@ -66,8 +66,6 @@ impl ZmqHandler {
     }
 
 
-    /// Send heartbeat (placeholder for future use)
-
     /// Try to receive a command (non-blocking)
     pub fn try_receive_command(&self) -> Result<Option<AgentCommand>> {
         match self.command_receiver.recv_bytes(zmq::DONTWAIT) {
@@ -112,6 +110,7 @@ pub enum AgentCommand {
 pub enum ServiceAction {
     Start,
     Stop,
-    Restart,
     Status,
+    UserStart,  // User-initiated start (clears user-stopped flag)
+    UserStop,   // User-initiated stop (marks as user-stopped)
 }

agent/src/config/mod.rs

@@ -25,9 +25,10 @@ pub struct ZmqConfig {
     pub publisher_port: u16,
     pub command_port: u16,
     pub bind_address: String,
-    pub timeout_ms: u64,
-    pub heartbeat_interval_ms: u64,
     pub transmission_interval_seconds: u64,
+    /// Heartbeat transmission interval in seconds for host connectivity detection
+    #[serde(default = "default_heartbeat_interval_seconds")]
+    pub heartbeat_interval_seconds: u64,
 }
 
 /// Collector configuration
@@ -108,6 +109,7 @@ pub struct SystemdConfig {
     pub nginx_check_interval_seconds: u64,
     pub http_timeout_seconds: u64,
     pub http_connect_timeout_seconds: u64,
+    pub nginx_latency_critical_ms: f32,
 }
 
 
@@ -143,9 +145,25 @@ pub struct NotificationConfig {
     pub from_email: String,
     pub to_email: String,
     pub rate_limit_minutes: u64,
+    /// Email notification batching interval in seconds (default: 60)
+    pub aggregation_interval_seconds: u64,
+    /// List of metric names to exclude from email notifications
+    #[serde(default)]
+    pub exclude_email_metrics: Vec<String>,
+    /// Path to maintenance mode file that suppresses email notifications when present
+    #[serde(default = "default_maintenance_mode_file")]
+    pub maintenance_mode_file: String,
 }
 
 
+fn default_heartbeat_interval_seconds() -> u64 {
+    5
+}
+
+fn default_maintenance_mode_file() -> String {
+    "/tmp/cm-maintenance".to_string()
+}
+
 impl AgentConfig {
     pub fn from_file<P: AsRef<Path>>(path: P) -> Result<Self> {
         loader::load_config(path)

agent/src/config/validation.rs

@@ -19,10 +19,6 @@ pub fn validate_config(config: &AgentConfig) -> Result<()> {
         bail!("ZMQ bind address cannot be empty");
     }
 
-    if config.zmq.timeout_ms == 0 {
-        bail!("ZMQ timeout cannot be 0");
-    }
-
     // Validate collection interval
     if config.collection_interval_seconds == 0 {
         bail!("Collection interval cannot be 0");
@@ -83,6 +79,13 @@ pub fn validate_config(config: &AgentConfig) -> Result<()> {
         }
     }
 
+    // Validate systemd configuration
+    if config.collectors.systemd.enabled {
+        if config.collectors.systemd.nginx_latency_critical_ms <= 0.0 {
+            bail!("Nginx latency critical threshold must be positive");
+        }
+    }
+
     // Validate SMTP configuration
     if config.notifications.enabled {
         if config.notifications.smtp_host.is_empty() {

agent/src/main.rs

@@ -9,6 +9,7 @@ mod communication;
 mod config;
 mod metrics;
 mod notifications;
+mod service_tracker;
 mod status;
 
 use agent::Agent;

agent/src/metrics/mod.rs

@@ -21,6 +21,7 @@ struct TimedCollector {
 pub struct MetricCollectionManager {
     collectors: Vec<TimedCollector>,
     status_tracker: StatusTracker,
+    cached_metrics: Vec<Metric>,
 }
 
 impl MetricCollectionManager {
@@ -177,6 +178,7 @@ impl MetricCollectionManager {
         Ok(Self {
             collectors,
             status_tracker: StatusTracker::new(),
+            cached_metrics: Vec::new(),
         })
     }
 
@@ -198,6 +200,9 @@ impl MetricCollectionManager {
                 }
             }
         }
+        
+        // Cache the collected metrics
+        self.cached_metrics = all_metrics.clone();
         Ok(all_metrics)
     }
 
@@ -231,6 +236,18 @@ impl MetricCollectionManager {
                 }
             }
         }
+        
+        // Update cache with newly collected metrics
+        if !all_metrics.is_empty() {
+            // Merge new metrics with cached metrics (replace by name)
+            for new_metric in &all_metrics {
+                // Remove any existing metric with the same name
+                self.cached_metrics.retain(|cached| cached.name != new_metric.name);
+                // Add the new metric
+                self.cached_metrics.push(new_metric.clone());
+            }
+        }
+        
         Ok(all_metrics)
     }
 
@@ -239,4 +256,9 @@ impl MetricCollectionManager {
         self.collect_metrics_timed().await
     }
     
+    /// Get cached metrics without triggering fresh collection
+    pub fn get_cached_metrics(&self) -> Vec<Metric> {
+        self.cached_metrics.clone()
+    }
+
 }

agent/src/notifications/mod.rs

@@ -59,6 +59,6 @@ impl NotificationManager {
     }
 
     fn is_maintenance_mode(&self) -> bool {
-        std::fs::metadata("/tmp/cm-maintenance").is_ok()
+        std::fs::metadata(&self.config.maintenance_mode_file).is_ok()
     }
 }

agent/src/service_tracker.rs

@@ -0,0 +1,172 @@
+use anyhow::Result;
+use serde::{Deserialize, Serialize};
+use std::collections::HashSet;
+use std::fs;
+use std::path::Path;
+use std::sync::{Arc, Mutex, OnceLock};
+use tracing::{debug, info, warn};
+
+/// Shared instance for global access
+static GLOBAL_TRACKER: OnceLock<Arc<Mutex<UserStoppedServiceTracker>>> = OnceLock::new();
+
+/// Tracks services that have been stopped by user action
+/// These services should be treated as OK status instead of Warning
+#[derive(Debug)]
+pub struct UserStoppedServiceTracker {
+    /// Set of services stopped by user action
+    user_stopped_services: HashSet<String>,
+    /// Path to persistent storage file
+    storage_path: String,
+}
+
+/// Serializable data structure for persistence
+#[derive(Debug, Serialize, Deserialize)]
+struct UserStoppedData {
+    services: Vec<String>,
+}
+
+impl UserStoppedServiceTracker {
+    /// Create new tracker with default storage path
+    pub fn new() -> Self {
+        Self::with_storage_path("/var/lib/cm-dashboard/user-stopped-services.json")
+    }
+
+    /// Initialize global instance (called by agent)
+    pub fn init_global() -> Result<Self> {
+        let tracker = Self::new();
+        
+        // Set global instance
+        let global_instance = Arc::new(Mutex::new(tracker));
+        if GLOBAL_TRACKER.set(global_instance).is_err() {
+            warn!("Global service tracker was already initialized");
+        }
+        
+        // Return a new instance for the agent to use
+        Ok(Self::new())
+    }
+
+    /// Check if a service is user-stopped (global access for collectors)
+    pub fn is_service_user_stopped(service_name: &str) -> bool {
+        if let Some(global) = GLOBAL_TRACKER.get() {
+            if let Ok(tracker) = global.lock() {
+                tracker.is_user_stopped(service_name)
+            } else {
+                debug!("Failed to lock global service tracker");
+                false
+            }
+        } else {
+            debug!("Global service tracker not initialized");
+            false
+        }
+    }
+
+    /// Update global tracker (called by agent when tracker state changes)
+    pub fn update_global(updated_tracker: &UserStoppedServiceTracker) {
+        if let Some(global) = GLOBAL_TRACKER.get() {
+            if let Ok(mut tracker) = global.lock() {
+                tracker.user_stopped_services = updated_tracker.user_stopped_services.clone();
+            } else {
+                debug!("Failed to lock global service tracker for update");
+            }
+        } else {
+            debug!("Global service tracker not initialized for update");
+        }
+    }
+
+    /// Create new tracker with custom storage path
+    pub fn with_storage_path<P: AsRef<Path>>(storage_path: P) -> Self {
+        let storage_path = storage_path.as_ref().to_string_lossy().to_string();
+        let mut tracker = Self {
+            user_stopped_services: HashSet::new(),
+            storage_path,
+        };
+
+        // Load existing data from storage
+        if let Err(e) = tracker.load_from_storage() {
+            warn!("Failed to load user-stopped services from storage: {}", e);
+            info!("Starting with empty user-stopped services list");
+        }
+
+        tracker
+    }
+
+    /// Mark a service as user-stopped
+    pub fn mark_user_stopped(&mut self, service_name: &str) -> Result<()> {
+        info!("Marking service '{}' as user-stopped", service_name);
+        self.user_stopped_services.insert(service_name.to_string());
+        self.save_to_storage()?;
+        debug!("Service '{}' marked as user-stopped and saved to storage", service_name);
+        Ok(())
+    }
+
+    /// Clear user-stopped flag for a service (when user starts it)
+    pub fn clear_user_stopped(&mut self, service_name: &str) -> Result<()> {
+        if self.user_stopped_services.remove(service_name) {
+            info!("Cleared user-stopped flag for service '{}'", service_name);
+            self.save_to_storage()?;
+            debug!("Service '{}' user-stopped flag cleared and saved to storage", service_name);
+        } else {
+            debug!("Service '{}' was not marked as user-stopped", service_name);
+        }
+        Ok(())
+    }
+
+    /// Check if a service is marked as user-stopped
+    pub fn is_user_stopped(&self, service_name: &str) -> bool {
+        let is_stopped = self.user_stopped_services.contains(service_name);
+        debug!("Service '{}' user-stopped status: {}", service_name, is_stopped);
+        is_stopped
+    }
+
+
+    /// Save current state to persistent storage
+    fn save_to_storage(&self) -> Result<()> {
+        // Create parent directory if it doesn't exist
+        if let Some(parent_dir) = Path::new(&self.storage_path).parent() {
+            if !parent_dir.exists() {
+                fs::create_dir_all(parent_dir)?;
+                debug!("Created parent directory: {}", parent_dir.display());
+            }
+        }
+
+        let data = UserStoppedData {
+            services: self.user_stopped_services.iter().cloned().collect(),
+        };
+
+        let json_data = serde_json::to_string_pretty(&data)?;
+        fs::write(&self.storage_path, json_data)?;
+
+        debug!(
+            "Saved {} user-stopped services to {}",
+            data.services.len(),
+            self.storage_path
+        );
+        Ok(())
+    }
+
+    /// Load state from persistent storage
+    fn load_from_storage(&mut self) -> Result<()> {
+        if !Path::new(&self.storage_path).exists() {
+            debug!("Storage file {} does not exist, starting fresh", self.storage_path);
+            return Ok(());
+        }
+
+        let json_data = fs::read_to_string(&self.storage_path)?;
+        let data: UserStoppedData = serde_json::from_str(&json_data)?;
+
+        self.user_stopped_services = data.services.into_iter().collect();
+
+        info!(
+            "Loaded {} user-stopped services from {}",
+            self.user_stopped_services.len(),
+            self.storage_path
+        );
+
+        if !self.user_stopped_services.is_empty() {
+            debug!("User-stopped services: {:?}", self.user_stopped_services);
+        }
+
+        Ok(())
+    }
+}
+

agent/src/status/mod.rs

@@ -158,61 +158,54 @@ impl HostStatusManager {
 
 
 
-    /// Process a metric - updates status and triggers immediate notifications if status changed
-    pub async fn process_metric(&mut self, metric: &Metric, notification_manager: &mut crate::notifications::NotificationManager) -> bool {
-        let old_status = self.service_statuses.get(&metric.name).copied().unwrap_or(Status::Unknown);
-        let new_status = metric.status;
+    /// Process a metric - updates status and queues for aggregated notifications if status changed
+    pub async fn process_metric(&mut self, metric: &Metric, _notification_manager: &mut crate::notifications::NotificationManager) -> bool {
+        let old_service_status = self.service_statuses.get(&metric.name).copied();
+        let old_host_status = self.current_host_status;
+        let new_service_status = metric.status;
         
-        // Update status
-        self.update_service_status(metric.name.clone(), new_status);
+        // Update status (this recalculates host status internally)
+        self.update_service_status(metric.name.clone(), new_service_status);
         
-        // Check if status actually changed
-        if old_status != new_status {
-            debug!("Status change detected for {}: {:?} -> {:?}", metric.name, old_status, new_status);
+        let new_host_status = self.current_host_status;
+        let mut status_changed = false;
         
-            // Process notification immediately on status change
-            if let Err(e) = self.process_status_change(&metric.name, old_status, new_status, notification_manager).await {
-                error!("Failed to process status change notification: {}", e);
+        // Check if service status actually changed (ignore first-time status setting)
+        if let Some(old_service_status) = old_service_status {
+            if old_service_status != new_service_status {
+                debug!("Service status change detected for {}: {:?} -> {:?}", metric.name, old_service_status, new_service_status);
+                
+                // Queue change for aggregated notification (not immediate)
+                self.queue_status_change(&metric.name, old_service_status, new_service_status);
+                
+                status_changed = true;
+            }
+        } else {
+            debug!("Initial status set for {}: {:?}", metric.name, new_service_status);
         }
         
-            return true; // Status changed - caller should trigger immediate transmission
+        // Check if host status changed (this should trigger immediate transmission)
+        if old_host_status != new_host_status {
+            debug!("Host status change detected: {:?} -> {:?}", old_host_status, new_host_status);
+            status_changed = true;
         }
         
-        false // No status change
+        status_changed // Return true if either service or host status changed
     }
 
-    /// Process immediate status change notification
-    async fn process_status_change(&mut self, metric_name: &str, old_status: Status, new_status: Status, notification_manager: &mut crate::notifications::NotificationManager) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
-        if !self.config.enabled {
-            return Ok(());
+    /// Queue status change for aggregated notification
+    fn queue_status_change(&mut self, metric_name: &str, old_status: Status, new_status: Status) {
+        // Add to pending changes for aggregated notification
+        let entry = self.pending_changes.entry(metric_name.to_string()).or_insert((old_status, old_status, 0));
+        entry.1 = new_status; // Update final status
+        entry.2 += 1; // Increment change count
+        
+        // Set batch start time if this is the first change
+        if self.batch_start_time.is_none() {
+            self.batch_start_time = Some(Instant::now());
+        }
     }
 
-        // Create immediate notification for this specific status change
-        let status_summary = StatusChangeSummary {
-            service_name: metric_name.to_string(),
-            initial_status: old_status,
-            final_status: new_status,
-            change_count: 1,
-        };
-
-        let aggregated = AggregatedStatusChanges {
-            start_time: Instant::now(),
-            end_time: Instant::now(),
-            service_summaries: vec![status_summary],
-            host_status_initial: old_status,
-            host_status_final: new_status,
-            requires_notification: true,
-        };
-
-        // Send immediate notification using existing method
-        if let Err(e) = self.send_aggregated_email(&aggregated, notification_manager).await {
-            error!("Failed to send immediate notification: {}", e);
-            return Err(e);
-        }
-        
-        info!("Sent immediate notification for {} status change: {:?} -> {:?}", metric_name, old_status, new_status);
-        Ok(())
-    }
 
     /// Process pending notifications - legacy method, now rarely used
     pub async fn process_pending_notifications(&mut self, notification_manager: &mut crate::notifications::NotificationManager) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
@@ -279,11 +272,13 @@ impl HostStatusManager {
     /// Check if a status change is significant enough for notification
     fn is_significant_change(&self, old_status: Status, new_status: Status) -> bool {
         match (old_status, new_status) {
-            // Always notify on problems
+            // Don't notify on transitions from Unknown (startup/restart scenario)
+            (Status::Unknown, _) => false,
+            // Always notify on problems (but not from Unknown)
             (_, Status::Warning) | (_, Status::Critical) => true,
             // Only notify on recovery if it's from a problem state to OK and all services are OK
             (Status::Warning | Status::Critical, Status::Ok) => self.current_host_status == Status::Ok,
-            // Don't notify on startup or other transitions
+            // Don't notify on other transitions
             _ => false,
         }
     }
@@ -381,8 +376,8 @@ impl HostStatusManager {
             details.push('\n');
         }
 
-        // Show recoveries
-        if !recovery_changes.is_empty() {
+        // Show recoveries only if host status is now OK (all services recovered)
+        if !recovery_changes.is_empty() && aggregated.host_status_final == Status::Ok {
             details.push_str(&format!("✅ RECOVERIES ({}):\n", recovery_changes.len()));
             for change in recovery_changes {
                 details.push_str(&format!("  {}\n", change));

dashboard/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard"
-version = "0.1.19"
+version = "0.1.66"
 edition = "2021"
 
 [dependencies]
@@ -19,3 +19,4 @@ ratatui = { workspace = true }
 crossterm = { workspace = true }
 toml = { workspace = true }
 gethostname = { workspace = true }
+wake-on-lan = "0.2"

dashboard/src/app.rs

@@ -22,7 +22,7 @@ pub struct Dashboard {
     terminal: Option<Terminal<CrosstermBackend<io::Stdout>>>,
     headless: bool,
     initial_commands_sent: std::collections::HashSet<String>,
-    _config: DashboardConfig,
+    config: DashboardConfig,
 }
 
 impl Dashboard {
@@ -67,8 +67,8 @@ impl Dashboard {
             }
         };
 
-        // Connect to predefined hosts from configuration
-        let hosts = config.hosts.predefined_hosts.clone();
+        // Connect to configured hosts from configuration
+        let hosts: Vec<String> = config.hosts.keys().cloned().collect();
 
         // Try to connect to hosts but don't fail if none are available
         match zmq_consumer.connect_to_predefined_hosts(&hosts).await {
@@ -133,7 +133,7 @@ impl Dashboard {
             terminal,
             headless,
             initial_commands_sent: std::collections::HashSet::new(),
-            _config: config,
+            config,
         })
     }
 
@@ -149,6 +149,8 @@ impl Dashboard {
 
         let mut last_metrics_check = Instant::now();
         let metrics_check_interval = Duration::from_millis(100); // Check for metrics every 100ms
+        let mut last_heartbeat_check = Instant::now();
+        let heartbeat_check_interval = Duration::from_secs(1); // Check for host connectivity every 1 second
 
         loop {
             // Handle terminal events (keyboard input) only if not headless
@@ -191,6 +193,17 @@ impl Dashboard {
                         break;
                     }
                 }
+
+                // Render UI immediately after handling input for responsive feedback
+                if let Some(ref mut terminal) = self.terminal {
+                    if let Some(ref mut tui_app) = self.tui_app {
+                        if let Err(e) = terminal.draw(|frame| {
+                            tui_app.render(frame, &self.metric_store);
+                        }) {
+                            error!("Error rendering TUI after input: {}", e);
+                        }
+                    }
+                }
             }
 
             // Check for new metrics
@@ -243,14 +256,8 @@ impl Dashboard {
                         }
                     }
 
-                    // Update TUI with new hosts and metrics (only if not headless)
+                    // Update TUI with new metrics (only if not headless)
                     if let Some(ref mut tui_app) = self.tui_app {
-                        let connected_hosts = self
-                            .metric_store
-                            .get_connected_hosts(Duration::from_secs(30));
-                        
-                        
-                        tui_app.update_hosts(connected_hosts);
                         tui_app.update_metrics(&self.metric_store);
                     }
                 }
@@ -263,17 +270,26 @@ impl Dashboard {
                         cmd_output.output_line
                     );
 
-                    // Forward to TUI if not headless
-                    if let Some(ref mut tui_app) = self.tui_app {
-                        tui_app.add_terminal_output(&cmd_output.hostname, cmd_output.output_line);
-                        
-                        // Note: Popup stays open for manual review - close with ESC/Q
-                    }
+                    // Command output (terminal popup removed - output not displayed)
                 }
                 
                 last_metrics_check = Instant::now();
             }
 
+            // Check for host connectivity changes (heartbeat timeouts) periodically
+            if last_heartbeat_check.elapsed() >= heartbeat_check_interval {
+                let timeout = Duration::from_secs(self.config.zmq.heartbeat_timeout_seconds);
+                
+                // Clean up metrics for offline hosts
+                self.metric_store.cleanup_offline_hosts(timeout);
+                
+                if let Some(ref mut tui_app) = self.tui_app {
+                    let connected_hosts = self.metric_store.get_connected_hosts(timeout);
+                    tui_app.update_hosts(connected_hosts);
+                }
+                last_heartbeat_check = Instant::now();
+            }
+
             // Render TUI (only if not headless)
             if !self.headless {
                 if let Some(ref mut terminal) = self.terminal {
@@ -299,27 +315,19 @@ impl Dashboard {
     /// Execute a UI command by sending it to the appropriate agent
     async fn execute_ui_command(&self, command: UiCommand) -> Result<()> {
         match command {
-            UiCommand::ServiceRestart { hostname, service_name } => {
-                info!("Sending restart command for service {} on {}", service_name, hostname);
-                let agent_command = AgentCommand::ServiceControl {
-                    service_name,
-                    action: ServiceAction::Restart,
-                };
-                self.zmq_command_sender.send_command(&hostname, agent_command).await?;
-            }
             UiCommand::ServiceStart { hostname, service_name } => {
-                info!("Sending start command for service {} on {}", service_name, hostname);
+                info!("Sending user start command for service {} on {}", service_name, hostname);
                 let agent_command = AgentCommand::ServiceControl {
                     service_name: service_name.clone(),
-                    action: ServiceAction::Start,
+                    action: ServiceAction::UserStart,
                 };
                 self.zmq_command_sender.send_command(&hostname, agent_command).await?;
             }
             UiCommand::ServiceStop { hostname, service_name } => {
-                info!("Sending stop command for service {} on {}", service_name, hostname);
+                info!("Sending user stop command for service {} on {}", service_name, hostname);
                 let agent_command = AgentCommand::ServiceControl {
                     service_name: service_name.clone(),
-                    action: ServiceAction::Stop,
+                    action: ServiceAction::UserStop,
                 };
                 self.zmq_command_sender.send_command(&hostname, agent_command).await?;
             }

dashboard/src/communication/mod.rs

@@ -35,8 +35,9 @@ pub enum AgentCommand {
 pub enum ServiceAction {
     Start,
     Stop,
-    Restart,
     Status,
+    UserStart,  // User-initiated start (clears user-stopped flag)
+    UserStop,   // User-initiated stop (marks as user-stopped)
 }
 
 /// ZMQ consumer for receiving metrics from agents

dashboard/src/config/mod.rs

@@ -6,21 +6,29 @@ use std::path::Path;
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct DashboardConfig {
     pub zmq: ZmqConfig,
-    pub hosts: HostsConfig,
+    pub hosts: std::collections::HashMap<String, HostDetails>,
     pub system: SystemConfig,
     pub ssh: SshConfig,
+    pub service_logs: std::collections::HashMap<String, Vec<ServiceLogConfig>>,
 }
 
 /// ZMQ consumer configuration
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct ZmqConfig {
     pub subscriber_ports: Vec<u16>,
+    /// Heartbeat timeout in seconds - hosts considered offline if no heartbeat received within this time
+    #[serde(default = "default_heartbeat_timeout_seconds")]
+    pub heartbeat_timeout_seconds: u64,
 }
 
-/// Hosts configuration
+fn default_heartbeat_timeout_seconds() -> u64 {
+    10 // Default to 10 seconds - allows for multiple missed heartbeats
+}
+
+/// Individual host configuration details
 #[derive(Debug, Clone, Serialize, Deserialize)]
-pub struct HostsConfig {
-    pub predefined_hosts: Vec<String>,
+pub struct HostDetails {
+    pub mac_address: Option<String>,
 }
 
 /// System configuration
@@ -39,6 +47,13 @@ pub struct SshConfig {
     pub rebuild_alias: String,
 }
 
+/// Service log file configuration per host
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ServiceLogConfig {
+    pub service_name: String,
+    pub log_file_path: String,
+}
+
 impl DashboardConfig {
     pub fn load_from_file<P: AsRef<Path>>(path: P) -> Result<Self> {
         let path = path.as_ref();
@@ -60,8 +75,3 @@ impl Default for ZmqConfig {
     }
 }
 
-impl Default for HostsConfig {
-    fn default() -> Self {
-        panic!("Dashboard configuration must be loaded from file - no hardcoded defaults allowed")
-    }
-}

dashboard/src/main.rs

@@ -12,10 +12,6 @@ mod ui;
 
 use app::Dashboard;
 
-/// Get hardcoded version
-fn get_version() -> &'static str {
-    "v0.1.19"
-}
 
 /// Check if running inside tmux session
 fn check_tmux_session() {
@@ -42,7 +38,7 @@ fn check_tmux_session() {
 #[derive(Parser)]
 #[command(name = "cm-dashboard")]
 #[command(about = "CM Dashboard TUI with individual metric consumption")]
-#[command(version = get_version())]
+#[command(version)]
 struct Cli {
     /// Increase logging verbosity (-v, -vv)
     #[arg(short, long, action = clap::ArgAction::Count)]

dashboard/src/metrics/store.rs

@@ -11,8 +11,8 @@ pub struct MetricStore {
     current_metrics: HashMap<String, HashMap<String, Metric>>,
     /// Historical metrics for trending
     historical_metrics: HashMap<String, Vec<MetricDataPoint>>,
-    /// Last update timestamp per host
-    last_update: HashMap<String, Instant>,
+    /// Last heartbeat timestamp per host
+    last_heartbeat: HashMap<String, Instant>,
     /// Configuration
     max_metrics_per_host: usize,
     history_retention: Duration,
@@ -23,7 +23,7 @@ impl MetricStore {
         Self {
             current_metrics: HashMap::new(),
             historical_metrics: HashMap::new(),
-            last_update: HashMap::new(),
+            last_heartbeat: HashMap::new(),
             max_metrics_per_host,
             history_retention: Duration::from_secs(history_retention_hours * 3600),
         }
@@ -56,10 +56,13 @@ impl MetricStore {
 
             // Add to history
             host_history.push(MetricDataPoint { received_at: now });
-        }
 
-        // Update last update timestamp
-        self.last_update.insert(hostname.to_string(), now);
+            // Track heartbeat metrics for connectivity detection
+            if metric_name == "agent_heartbeat" {
+                self.last_heartbeat.insert(hostname.to_string(), now);
+                debug!("Updated heartbeat for host {}", hostname);
+            }
+        }
 
         // Get metrics count before cleanup
         let metrics_count = host_metrics.len();
@@ -88,22 +91,46 @@ impl MetricStore {
         }
     }
 
-    /// Get connected hosts (hosts with recent updates)
+    /// Get connected hosts (hosts with recent heartbeats)
     pub fn get_connected_hosts(&self, timeout: Duration) -> Vec<String> {
         let now = Instant::now();
 
-        self.last_update
+        self.last_heartbeat
             .iter()
-            .filter_map(|(hostname, &last_update)| {
-                if now.duration_since(last_update) <= timeout {
+            .filter_map(|(hostname, &last_heartbeat)| {
+                if now.duration_since(last_heartbeat) <= timeout {
                     Some(hostname.clone())
                 } else {
+                    debug!("Host {} considered offline - last heartbeat was {:?} ago", 
+                           hostname, now.duration_since(last_heartbeat));
                     None
                 }
             })
             .collect()
     }
 
+    /// Clean up data for offline hosts
+    pub fn cleanup_offline_hosts(&mut self, timeout: Duration) {
+        let now = Instant::now();
+        let mut hosts_to_cleanup = Vec::new();
+
+        // Find hosts that are offline (no recent heartbeat)
+        for (hostname, &last_heartbeat) in &self.last_heartbeat {
+            if now.duration_since(last_heartbeat) > timeout {
+                hosts_to_cleanup.push(hostname.clone());
+            }
+        }
+
+        // Clear metrics for offline hosts
+        for hostname in hosts_to_cleanup {
+            if let Some(metrics) = self.current_metrics.remove(&hostname) {
+                info!("Cleared {} metrics for offline host: {}", metrics.len(), hostname);
+            }
+            // Keep heartbeat timestamp for reconnection detection
+            // Don't remove from last_heartbeat to track when host was last seen
+        }
+    }
+
     /// Cleanup old data and enforce limits
     fn cleanup_host_data(&mut self, hostname: &str) {
         let now = Instant::now();

dashboard/src/ui/mod.rs

@@ -1,5 +1,5 @@
 use anyhow::Result;
-use crossterm::event::{Event, KeyCode, KeyModifiers};
+use crossterm::event::{Event, KeyCode};
 use ratatui::{
     layout::{Constraint, Direction, Layout, Rect},
     style::Style,
@@ -7,8 +7,9 @@ use ratatui::{
     Frame,
 };
 use std::collections::HashMap;
-use std::time::{Duration, Instant};
+use std::time::Instant;
 use tracing::info;
+use wake_on_lan::MagicPacket;
 
 pub mod theme;
 pub mod widgets;
@@ -22,38 +23,21 @@ use widgets::{BackupWidget, ServicesWidget, SystemWidget, Widget};
 /// Commands that can be triggered from the UI
 #[derive(Debug, Clone)]
 pub enum UiCommand {
-    ServiceRestart { hostname: String, service_name: String },
     ServiceStart { hostname: String, service_name: String },
     ServiceStop { hostname: String, service_name: String },
     TriggerBackup { hostname: String },
 }
 
-/// Command execution status for visual feedback
-#[derive(Debug, Clone)]
-pub enum CommandStatus {
-    /// Command is executing
-    InProgress { command_type: CommandType, target: String, start_time: std::time::Instant },
-}
 
 /// Types of commands for status tracking
 #[derive(Debug, Clone)]
 pub enum CommandType {
-    ServiceRestart,
     ServiceStart,
     ServiceStop,
     BackupTrigger,
 }
 
 /// Panel types for focus management
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub enum PanelType {
-    System,
-    Services,
-    Backup,
-}
-
-impl PanelType {
-}
 
 /// Widget states for a specific host
 #[derive(Clone)]
@@ -70,8 +54,8 @@ pub struct HostWidgets {
     pub backup_scroll_offset: usize,
     /// Last update time for this host
     pub last_update: Option<Instant>,
-    /// Active command status for visual feedback
-    pub command_status: Option<CommandStatus>,
+    /// Pending service transitions for immediate visual feedback
+    pub pending_service_transitions: HashMap<String, (CommandType, String, Instant)>, // service_name -> (command_type, original_status, start_time)
 }
 
 impl HostWidgets {
@@ -84,55 +68,11 @@ impl HostWidgets {
             services_scroll_offset: 0,
             backup_scroll_offset: 0,
             last_update: None,
-            command_status: None,
+            pending_service_transitions: HashMap::new(),
         }
     }
 }
 
-/// Terminal popup for streaming command output
-#[derive(Clone)]
-pub struct TerminalPopup {
-    /// Is the popup currently visible
-    pub visible: bool,
-    /// Command being executed
-    pub _command_type: CommandType,
-    /// Target hostname
-    pub hostname: String,
-    /// Target service/operation name
-    pub target: String,
-    /// Output lines collected so far
-    pub output_lines: Vec<String>,
-    /// Scroll offset for the output
-    pub scroll_offset: usize,
-    /// Start time of the operation
-    pub start_time: Instant,
-}
-
-impl TerminalPopup {
-    pub fn _new(command_type: CommandType, hostname: String, target: String) -> Self {
-        Self {
-            visible: true,
-            _command_type: command_type,
-            hostname,
-            target,
-            output_lines: Vec::new(),
-            scroll_offset: 0,
-            start_time: Instant::now(),
-        }
-    }
-
-    pub fn add_output_line(&mut self, line: String) {
-        self.output_lines.push(line);
-        // Auto-scroll to bottom when new content arrives
-        if self.output_lines.len() > 20 {
-            self.scroll_offset = self.output_lines.len().saturating_sub(20);
-        }
-    }
-
-    pub fn close(&mut self) {
-        self.visible = false;
-    }
-}
 
 /// Main TUI application
 pub struct TuiApp {
@@ -144,31 +84,39 @@ pub struct TuiApp {
     available_hosts: Vec<String>,
     /// Host index for navigation
     host_index: usize,
-    /// Currently focused panel
-    focused_panel: PanelType,
     /// Should quit application
     should_quit: bool,
     /// Track if user manually navigated away from localhost
     user_navigated_away: bool,
-    /// Terminal popup for streaming command output
-    terminal_popup: Option<TerminalPopup>,
     /// Dashboard configuration
     config: DashboardConfig,
+    /// Cached localhost hostname to avoid repeated system calls
+    localhost: String,
 }
 
 impl TuiApp {
     pub fn new(config: DashboardConfig) -> Self {
-        Self {
+        let localhost = gethostname::gethostname().to_string_lossy().to_string();
+        let mut app = Self {
             host_widgets: HashMap::new(),
             current_host: None,
-            available_hosts: Vec::new(),
+            available_hosts: config.hosts.keys().cloned().collect(),
             host_index: 0,
-            focused_panel: PanelType::System, // Start with System panel focused
             should_quit: false,
             user_navigated_away: false,
-            terminal_popup: None,
             config,
+            localhost,
+        };
+        
+        // Sort predefined hosts
+        app.available_hosts.sort();
+        
+        // Initialize with first host if available
+        if !app.available_hosts.is_empty() {
+            app.current_host = Some(app.available_hosts[0].clone());
         }
+        
+        app
     }
 
     /// Get or create host widgets for the given hostname
@@ -180,8 +128,6 @@ impl TuiApp {
 
     /// Update widgets with metrics from store (only for current host)
     pub fn update_metrics(&mut self, metric_store: &MetricStore) {
-        // Check for command timeouts first
-        self.check_command_timeouts();
         
         // Check for rebuild completion by agent hash change
         
@@ -189,31 +135,34 @@ impl TuiApp {
             // Only update widgets if we have metrics for this host
             let all_metrics = metric_store.get_metrics_for_host(&hostname);
             if !all_metrics.is_empty() {
-                // Get metrics first while hostname is borrowed
-                let cpu_metrics: Vec<&Metric> = all_metrics
-                    .iter()
-                    .filter(|m| {
-                        m.name.starts_with("cpu_")
-                            || m.name.contains("c_state_")
-                            || m.name.starts_with("process_top_")
-                    })
-                    .copied()
-                    .collect();
-                let memory_metrics: Vec<&Metric> = all_metrics
-                    .iter()
-                    .filter(|m| m.name.starts_with("memory_") || m.name.starts_with("disk_tmp_"))
-                    .copied()
-                    .collect();
-                let service_metrics: Vec<&Metric> = all_metrics
-                    .iter()
-                    .filter(|m| m.name.starts_with("service_"))
-                    .copied()
-                    .collect();
-                let all_backup_metrics: Vec<&Metric> = all_metrics
-                    .iter()
-                    .filter(|m| m.name.starts_with("backup_"))
-                    .copied()
-                    .collect();
+                // Single pass metric categorization for better performance
+                let mut cpu_metrics = Vec::new();
+                let mut memory_metrics = Vec::new();
+                let mut service_metrics = Vec::new();
+                let mut backup_metrics = Vec::new();
+                let mut nixos_metrics = Vec::new();
+                let mut disk_metrics = Vec::new();
+                
+                for metric in all_metrics {
+                    if metric.name.starts_with("cpu_") 
+                        || metric.name.contains("c_state_") 
+                        || metric.name.starts_with("process_top_") {
+                        cpu_metrics.push(metric);
+                    } else if metric.name.starts_with("memory_") || metric.name.starts_with("disk_tmp_") {
+                        memory_metrics.push(metric);
+                    } else if metric.name.starts_with("service_") {
+                        service_metrics.push(metric);
+                    } else if metric.name.starts_with("backup_") {
+                        backup_metrics.push(metric);
+                    } else if metric.name == "system_nixos_build" || metric.name == "system_active_users" || metric.name == "agent_version" {
+                        nixos_metrics.push(metric);
+                    } else if metric.name.starts_with("disk_") {
+                        disk_metrics.push(metric);
+                    }
+                }
+
+                // Clear completed transitions first
+                self.clear_completed_transitions(&hostname, &service_metrics);
 
                 // Now get host widgets and update them
                 let host_widgets = self.get_or_create_host_widgets(&hostname);
@@ -221,21 +170,7 @@ impl TuiApp {
                 // Collect all system metrics (CPU, memory, NixOS, disk/storage)
                 let mut system_metrics = cpu_metrics;
                 system_metrics.extend(memory_metrics);
-                
-                // Add NixOS metrics - using exact matching for build display fix
-                let nixos_metrics: Vec<&Metric> = all_metrics
-                    .iter()
-                    .filter(|m| m.name == "system_nixos_build" || m.name == "system_active_users" || m.name == "agent_version")
-                    .copied()
-                    .collect();
                 system_metrics.extend(nixos_metrics);
-                
-                // Add disk/storage metrics
-                let disk_metrics: Vec<&Metric> = all_metrics
-                    .iter()
-                    .filter(|m| m.name.starts_with("disk_"))
-                    .copied()
-                    .collect();
                 system_metrics.extend(disk_metrics);
 
                 host_widgets.system_widget.update_from_metrics(&system_metrics);
@@ -244,7 +179,7 @@ impl TuiApp {
                     .update_from_metrics(&service_metrics);
                 host_widgets
                     .backup_widget
-                    .update_from_metrics(&all_backup_metrics);
+                    .update_from_metrics(&backup_metrics);
 
                 host_widgets.last_update = Some(Instant::now());
             }
@@ -252,30 +187,36 @@ impl TuiApp {
     }
 
     /// Update available hosts with localhost prioritization
-    pub fn update_hosts(&mut self, hosts: Vec<String>) {
-        // Sort hosts alphabetically
-        let mut sorted_hosts = hosts.clone();
+    pub fn update_hosts(&mut self, discovered_hosts: Vec<String>) {
+        // Start with configured hosts (always visible)
+        let mut all_hosts: Vec<String> = self.config.hosts.keys().cloned().collect();
         
-        // Keep hosts that have ongoing commands even if they're offline
+        // Add any discovered hosts that aren't already configured
+        for host in discovered_hosts {
+            if !all_hosts.contains(&host) {
+                all_hosts.push(host);
+            }
+        }
+        
+        // Keep hosts that have pending transitions even if they're offline
         for (hostname, host_widgets) in &self.host_widgets {
-            if let Some(CommandStatus::InProgress { .. }) = &host_widgets.command_status {
-                if !sorted_hosts.contains(hostname) {
-                    sorted_hosts.push(hostname.clone());
+            if !host_widgets.pending_service_transitions.is_empty() {
+                if !all_hosts.contains(hostname) {
+                    all_hosts.push(hostname.clone());
                 }
             }
         }
         
-        sorted_hosts.sort();
-        self.available_hosts = sorted_hosts;
+        all_hosts.sort();
+        self.available_hosts = all_hosts;
         
         // Get the current hostname (localhost) for auto-selection
-        let localhost = gethostname::gethostname().to_string_lossy().to_string();
         if !self.available_hosts.is_empty() {
-            if self.available_hosts.contains(&localhost) && !self.user_navigated_away {
+            if self.available_hosts.contains(&self.localhost) && !self.user_navigated_away {
                 // Localhost is available and user hasn't navigated away - switch to it
-                self.current_host = Some(localhost.clone());
+                self.current_host = Some(self.localhost.clone());
                 // Find the actual index of localhost in the sorted list
-                self.host_index = self.available_hosts.iter().position(|h| h == &localhost).unwrap_or(0);
+                self.host_index = self.available_hosts.iter().position(|h| h == &self.localhost).unwrap_or(0);
             } else if self.current_host.is_none() {
                 // No current host - select first available (which is localhost if available)
                 self.current_host = Some(self.available_hosts[0].clone());
@@ -297,38 +238,6 @@ impl TuiApp {
     /// Handle keyboard input
     pub fn handle_input(&mut self, event: Event) -> Result<Option<UiCommand>> {
         if let Event::Key(key) = event {
-            // If terminal popup is visible, handle popup-specific keys first
-            if let Some(ref mut popup) = self.terminal_popup {
-                if popup.visible {
-                    match key.code {
-                        KeyCode::Esc => {
-                            popup.close();
-                            self.terminal_popup = None;
-                            return Ok(None);
-                        }
-                        KeyCode::Up => {
-                            popup.scroll_offset = popup.scroll_offset.saturating_sub(1);
-                            return Ok(None);
-                        }
-                        KeyCode::Down => {
-                            let max_scroll = if popup.output_lines.len() > 20 {
-                                popup.output_lines.len() - 20
-                            } else {
-                                0
-                            };
-                            popup.scroll_offset = (popup.scroll_offset + 1).min(max_scroll);
-                            return Ok(None);
-                        }
-                        KeyCode::Char('q') => {
-                            popup.close();
-                            self.terminal_popup = None;
-                            return Ok(None);
-                        }
-                        _ => return Ok(None), // Consume all other keys when popup is open
-                    }
-                }
-            }
-
             match key.code {
                 KeyCode::Char('q') => {
                     self.should_quit = true;
@@ -340,83 +249,162 @@ impl TuiApp {
                     self.navigate_host(1);
                 }
                 KeyCode::Char('r') => {
-                    match self.focused_panel {
-                        PanelType::System => {
-                            // Simple tmux popup with SSH rebuild using configured user and alias
+                    // System rebuild command - works on any panel for current host
                     if let Some(hostname) = self.current_host.clone() {
-                                // Launch tmux popup with SSH using config values
-                                let ssh_command = format!(
-                                    "ssh -tt {}@{} 'bash -ic {}'",
+                        // Create command that shows logo, rebuilds, and waits for user input
+                        let logo_and_rebuild = format!(
+                            "bash -c 'cat << \"EOF\"\nNixOS System Rebuild\nTarget: {}\n\nEOF\nssh -tt {}@{} \"bash -ic {}\"\necho\necho \"========================================\"\necho \"Rebuild completed. Press any key to close...\"\necho \"========================================\"\nread -n 1 -s\nexit'",
+                            hostname,
                             self.config.ssh.rebuild_user,
                             hostname,
                             self.config.ssh.rebuild_alias
                         );
+                        
                         std::process::Command::new("tmux")
-                                    .arg("display-popup")
-                                    .arg(&ssh_command)
+                            .arg("split-window")
+                            .arg("-v")
+                            .arg("-p")
+                            .arg("30")
+                            .arg(&logo_and_rebuild)
                             .spawn()
                             .ok(); // Ignore errors, tmux will handle them
                     }
                 }
-                        PanelType::Services => {
-                            // Service restart command
-                            if let (Some(service_name), Some(hostname)) = (self.get_selected_service(), self.current_host.clone()) {
-                                self.start_command(&hostname, CommandType::ServiceRestart, service_name.clone());
-                                return Ok(Some(UiCommand::ServiceRestart { hostname, service_name }));
-                            }
-                        }
-                        _ => {
-                            info!("Manual refresh requested");
-                        }
-                    }
-                }
                 KeyCode::Char('s') => {
-                    if self.focused_panel == PanelType::Services {
                     // Service start command
                     if let (Some(service_name), Some(hostname)) = (self.get_selected_service(), self.current_host.clone()) {
-                            self.start_command(&hostname, CommandType::ServiceStart, service_name.clone());
+                        if self.start_command(&hostname, CommandType::ServiceStart, service_name.clone()) {
                             return Ok(Some(UiCommand::ServiceStart { hostname, service_name }));
                         }
                     }
                 }
                 KeyCode::Char('S') => {
-                    if self.focused_panel == PanelType::Services {
                     // Service stop command
                     if let (Some(service_name), Some(hostname)) = (self.get_selected_service(), self.current_host.clone()) {
-                            self.start_command(&hostname, CommandType::ServiceStop, service_name.clone());
+                        if self.start_command(&hostname, CommandType::ServiceStop, service_name.clone()) {
                             return Ok(Some(UiCommand::ServiceStop { hostname, service_name }));
                         }
                     }
                 }
+                KeyCode::Char('J') => {
+                    // Show service logs via journalctl in tmux split window
+                    if let (Some(service_name), Some(hostname)) = (self.get_selected_service(), self.current_host.clone()) {
+                        let journalctl_command = format!(
+                            "bash -c \"ssh -tt {}@{} 'sudo journalctl -u {}.service -f --no-pager -n 50'; exit\"",
+                            self.config.ssh.rebuild_user,
+                            hostname,
+                            service_name
+                        );
+                        
+                        std::process::Command::new("tmux")
+                            .arg("split-window")
+                            .arg("-v")
+                            .arg("-p")
+                            .arg("30")
+                            .arg(&journalctl_command)
+                            .spawn()
+                            .ok(); // Ignore errors, tmux will handle them
+                    }
+                }
+                KeyCode::Char('L') => {
+                    // Show custom service log file in tmux split window
+                    if let (Some(service_name), Some(hostname)) = (self.get_selected_service(), self.current_host.clone()) {
+                        // Check if this service has a custom log file configured
+                        if let Some(host_logs) = self.config.service_logs.get(&hostname) {
+                            if let Some(log_config) = host_logs.iter().find(|config| config.service_name == service_name) {
+                                let tail_command = format!(
+                                    "bash -c \"ssh -tt {}@{} 'sudo tail -n 50 -f {}'; exit\"",
+                                    self.config.ssh.rebuild_user,
+                                    hostname,
+                                    log_config.log_file_path
+                                );
+                                
+                                std::process::Command::new("tmux")
+                                    .arg("split-window")
+                                    .arg("-v")
+                                    .arg("-p")
+                                    .arg("30")
+                                    .arg(&tail_command)
+                                    .spawn()
+                                    .ok(); // Ignore errors, tmux will handle them
+                            }
+                        }
+                    }
+                }
                 KeyCode::Char('b') => {
-                    if self.focused_panel == PanelType::Backup {
                     // Trigger backup
                     if let Some(hostname) = self.current_host.clone() {
                         self.start_command(&hostname, CommandType::BackupTrigger, hostname.clone());
                         return Ok(Some(UiCommand::TriggerBackup { hostname }));
                     }
                 }
+                KeyCode::Char('w') => {
+                    // Wake on LAN for offline hosts
+                    if let Some(hostname) = self.current_host.clone() {
+                        // Check if host has MAC address configured
+                        if let Some(host_details) = self.config.hosts.get(&hostname) {
+                            if let Some(mac_address) = &host_details.mac_address {
+                                // Parse MAC address and send WoL packet
+                                let mac_bytes = Self::parse_mac_address(mac_address);
+                                match mac_bytes {
+                                    Ok(mac) => {
+                                        match MagicPacket::new(&mac).send() {
+                                            Ok(_) => {
+                                                info!("WakeOnLAN packet sent successfully to {} ({})", hostname, mac_address);
+                                            }
+                                            Err(e) => {
+                                                tracing::error!("Failed to send WakeOnLAN packet to {}: {}", hostname, e);
+                                            }
+                                        }
+                                    }
+                                    Err(_) => {
+                                        tracing::error!("Invalid MAC address format for {}: {}", hostname, mac_address);
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+                KeyCode::Char('t') => {
+                    // Open SSH terminal session in tmux window
+                    if let Some(hostname) = self.current_host.clone() {
+                        let ssh_command = format!(
+                            "ssh -tt {}@{}",
+                            self.config.ssh.rebuild_user,
+                            hostname
+                        );
+                        
+                        std::process::Command::new("tmux")
+                            .arg("split-window")
+                            .arg("-v")
+                            .arg("-p")
+                            .arg("30") // Use 30% like other commands
+                            .arg(&ssh_command)
+                            .spawn()
+                            .ok(); // Ignore errors, tmux will handle them
+                    }
                 }
                 KeyCode::Tab => {
-                    if key.modifiers.contains(KeyModifiers::SHIFT) {
-                        // Shift+Tab cycles through panels
-                        self.next_panel();
-                    } else {
                     // Tab cycles to next host
                     self.navigate_host(1);
                 }
+                KeyCode::Up | KeyCode::Char('k') => {
+                    // Move service selection up
+                    if let Some(hostname) = self.current_host.clone() {
+                        let host_widgets = self.get_or_create_host_widgets(&hostname);
+                        host_widgets.services_widget.select_previous();
                     }
-                KeyCode::BackTab => {
-                    // BackTab (Shift+Tab on some terminals) also cycles panels
-                    self.next_panel();
                 }
-                KeyCode::Up => {
-                    // Scroll up in focused panel
-                    self.scroll_focused_panel(-1);
+                KeyCode::Down | KeyCode::Char('j') => {
+                    // Move service selection down
+                    if let Some(hostname) = self.current_host.clone() {
+                        let total_services = {
+                            let host_widgets = self.get_or_create_host_widgets(&hostname);
+                            host_widgets.services_widget.get_total_services_count()
+                        };
+                        let host_widgets = self.get_or_create_host_widgets(&hostname);
+                        host_widgets.services_widget.select_next(total_services);
                     }
-                KeyCode::Down => {
-                    // Scroll down in focused panel
-                    self.scroll_focused_panel(1);
                 }
                 _ => {}
             }
@@ -444,9 +432,8 @@ impl TuiApp {
         self.current_host = Some(self.available_hosts[self.host_index].clone());
         
         // Check if user navigated away from localhost
-        let localhost = gethostname::gethostname().to_string_lossy().to_string();
         if let Some(ref current) = self.current_host {
-            if current != &localhost {
+            if current != &self.localhost {
                 self.user_navigated_away = true;
             } else {
                 self.user_navigated_away = false; // User navigated back to localhost
@@ -457,25 +444,6 @@ impl TuiApp {
     }
 
 
-    /// Switch to next panel (Shift+Tab) - only cycles through visible panels
-    pub fn next_panel(&mut self) {
-        let visible_panels = self.get_visible_panels();
-        if visible_panels.len() <= 1 {
-            return; // Can't switch if only one or no panels visible
-        }
-        
-        // Find current panel index in visible panels
-        if let Some(current_index) = visible_panels.iter().position(|&p| p == self.focused_panel) {
-            // Move to next visible panel
-            let next_index = (current_index + 1) % visible_panels.len();
-            self.focused_panel = visible_panels[next_index];
-        } else {
-            // Current panel not visible, switch to first visible panel
-            self.focused_panel = visible_panels[0];
-        }
-        
-        info!("Switched to panel: {:?}", self.focused_panel);
-    }
 
 
 
@@ -495,124 +463,89 @@ impl TuiApp {
         self.should_quit
     }
 
-    /// Start command execution and track status for visual feedback
-    pub fn start_command(&mut self, hostname: &str, command_type: CommandType, target: String) {
-        if let Some(host_widgets) = self.host_widgets.get_mut(hostname) {
-            host_widgets.command_status = Some(CommandStatus::InProgress {
-                command_type,
-                target,
-                start_time: Instant::now(),
-            });
-        }
-    }
-
-    /// Mark command as completed successfully
-    pub fn _complete_command(&mut self, hostname: &str) {
-        if let Some(host_widgets) = self.host_widgets.get_mut(hostname) {
-            // Simply clear the command status when completed
-            host_widgets.command_status = None;
-        }
-    }
-
-
-    /// Check for command timeouts and automatically clear them
-    pub fn check_command_timeouts(&mut self) {
-        let now = Instant::now();
-        let mut hosts_to_clear = Vec::new();
-        
-        for (hostname, host_widgets) in &self.host_widgets {
-            if let Some(CommandStatus::InProgress { command_type: _, start_time, .. }) = &host_widgets.command_status {
-                let timeout_duration = Duration::from_secs(30); // 30 seconds for service commands
-                
-                if now.duration_since(*start_time) > timeout_duration {
-                    hosts_to_clear.push(hostname.clone());
-                }
-            }
-        }
-        
-        // Clear timed out commands
-        for hostname in hosts_to_clear {
-            if let Some(host_widgets) = self.host_widgets.get_mut(&hostname) {
-                host_widgets.command_status = None;
-            }
-        }
-    }
-
-    /// Add output line to terminal popup
-    pub fn add_terminal_output(&mut self, hostname: &str, line: String) {
-        if let Some(ref mut popup) = self.terminal_popup {
-            if popup.hostname == hostname && popup.visible {
-                popup.add_output_line(line);
-            }
-        }
-    }
-
-    /// Close terminal popup for a specific hostname
-    pub fn _close_terminal_popup(&mut self, hostname: &str) {
-        if let Some(ref mut popup) = self.terminal_popup {
-            if popup.hostname == hostname {
-                popup.close();
-                self.terminal_popup = None;
-            }
-        }
-    }
-
-
-    /// Scroll the focused panel up or down
-    pub fn scroll_focused_panel(&mut self, direction: i32) {
-        if let Some(hostname) = self.current_host.clone() {
-            let focused_panel = self.focused_panel; // Get the value before borrowing
-            let host_widgets = self.get_or_create_host_widgets(&hostname);
-            
-            match focused_panel {
-                PanelType::System => {
-                    if direction > 0 {
-                        host_widgets.system_scroll_offset = host_widgets.system_scroll_offset.saturating_add(1);
-                    } else {
-                        host_widgets.system_scroll_offset = host_widgets.system_scroll_offset.saturating_sub(1);
-                    }
-                    info!("System panel scroll offset: {}", host_widgets.system_scroll_offset);
-                }
-                PanelType::Services => {
-                    // For services panel, Up/Down moves selection cursor, not scroll
-                    let total_services = host_widgets.services_widget.get_total_services_count();
-                    
-                    if direction > 0 {
-                        host_widgets.services_widget.select_next(total_services);
-                        info!("Services selection moved down");
-                    } else {
-                        host_widgets.services_widget.select_previous();
-                        info!("Services selection moved up");
-                    }
-                }
-                PanelType::Backup => {
-                    if direction > 0 {
-                        host_widgets.backup_scroll_offset = host_widgets.backup_scroll_offset.saturating_add(1);
-                    } else {
-                        host_widgets.backup_scroll_offset = host_widgets.backup_scroll_offset.saturating_sub(1);
-                    }
-                    info!("Backup panel scroll offset: {}", host_widgets.backup_scroll_offset);
-                }
-            }
-        }
-    }
-
-
-    /// Get list of currently visible panels
-    fn get_visible_panels(&self) -> Vec<PanelType> {
-        let mut visible_panels = vec![PanelType::System, PanelType::Services];
-        
-        // Check if backup panel should be shown
-        if let Some(hostname) = &self.current_host {
+    /// Get current service status for state-aware command validation
+    fn get_current_service_status(&self, hostname: &str, service_name: &str) -> Option<String> {
         if let Some(host_widgets) = self.host_widgets.get(hostname) {
-                if host_widgets.backup_widget.has_data() {
-                    visible_panels.push(PanelType::Backup);
+            return host_widgets.services_widget.get_service_status(service_name);
+        }
+        None
+    }
+
+    /// Start command execution with immediate visual feedback 
+    pub fn start_command(&mut self, hostname: &str, command_type: CommandType, target: String) -> bool {
+        // Get current service status to validate command
+        let current_status = self.get_current_service_status(hostname, &target);
+        
+        // Validate if command makes sense for current state
+        let should_execute = match (&command_type, current_status.as_deref()) {
+            (CommandType::ServiceStart, Some("inactive") | Some("failed") | Some("dead")) => true,
+            (CommandType::ServiceStop, Some("active")) => true,
+            (CommandType::ServiceStart, Some("active")) => {
+                // Already running - don't execute
+                false
+            },
+            (CommandType::ServiceStop, Some("inactive") | Some("failed") | Some("dead")) => {
+                // Already stopped - don't execute  
+                false
+            },
+            (_, None) => {
+                // Unknown service state - allow command to proceed
+                true
+            },
+            _ => true, // Default: allow other combinations
+        };
+        
+        // ALWAYS store the pending transition for immediate visual feedback, even if we don't execute
+        if let Some(host_widgets) = self.host_widgets.get_mut(hostname) {
+            host_widgets.pending_service_transitions.insert(
+                target.clone(), 
+                (command_type, current_status.unwrap_or_else(|| "unknown".to_string()), Instant::now())
+            );
+        }
+        
+        should_execute
+    }
+
+    /// Clear pending transitions when real status updates arrive or timeout
+    fn clear_completed_transitions(&mut self, hostname: &str, service_metrics: &[&Metric]) {
+        if let Some(host_widgets) = self.host_widgets.get_mut(hostname) {
+            let mut completed_services = Vec::new();
+            
+            // Check each pending transition to see if real status has changed
+            for (service_name, (command_type, original_status, _start_time)) in &host_widgets.pending_service_transitions {
+                
+                // Look for status metric for this service
+                for metric in service_metrics {
+                    if metric.name == format!("service_{}_status", service_name) {
+                        let new_status = metric.value.as_string();
+                        
+                        // Check if status has changed from original (command completed)
+                        if &new_status != original_status {
+                            // Verify it changed in the expected direction
+                            let expected_change = match command_type {
+                                CommandType::ServiceStart => &new_status == "active",
+                                CommandType::ServiceStop => &new_status != "active",
+                                _ => false,
+                            };
+                            
+                            if expected_change {
+                                completed_services.push(service_name.clone());
+                            }
+                        }
+                        break;
                     }
                 }
             }
             
-        visible_panels
+            // Remove completed transitions
+            for service_name in completed_services {
+                host_widgets.pending_service_transitions.remove(&service_name);
             }
+        }
+    }
+
+
+
 
     /// Render the dashboard (real btop-style multi-panel layout)
     pub fn render(&mut self, frame: &mut Frame, metric_store: &MetricStore) {
@@ -644,6 +577,21 @@ impl TuiApp {
             ])
             .split(main_chunks[1]); // main_chunks[1] is now the content area (between title and statusbar)
 
+        // Check if current host is offline
+        let current_host_offline = if let Some(hostname) = self.current_host.clone() {
+            self.calculate_host_status(&hostname, metric_store) == Status::Offline
+        } else {
+            true // No host selected is considered offline
+        };
+
+        // If host is offline, render wake-up message instead of panels
+        if current_host_offline {
+            self.render_offline_host_message(frame, main_chunks[1]);
+            self.render_btop_title(frame, main_chunks[0], metric_store);
+            self.render_statusbar(frame, main_chunks[2]);
+            return;
+        }
+
         // Check if backup panel should be shown
         let show_backup = if let Some(hostname) = self.current_host.clone() {
             let host_widgets = self.get_or_create_host_widgets(&hostname);
@@ -681,26 +629,20 @@ impl TuiApp {
 
         // Render services widget for current host
         if let Some(hostname) = self.current_host.clone() {
-            let is_focused = self.focused_panel == PanelType::Services;
-            let (scroll_offset, command_status) = {
+            let is_focused = true; // Always show service selection
+            let (scroll_offset, pending_transitions) = {
                 let host_widgets = self.get_or_create_host_widgets(&hostname);
-                (host_widgets.services_scroll_offset, host_widgets.command_status.clone())
+                (host_widgets.services_scroll_offset, host_widgets.pending_service_transitions.clone())
             };
             let host_widgets = self.get_or_create_host_widgets(&hostname);
             host_widgets
                 .services_widget
-                .render_with_command_status(frame, content_chunks[1], is_focused, scroll_offset, command_status.as_ref()); // Services takes full right side
+                .render_with_transitions(frame, content_chunks[1], is_focused, scroll_offset, &pending_transitions); // Services takes full right side
         }
 
         // Render statusbar at the bottom
         self.render_statusbar(frame, main_chunks[2]); // main_chunks[2] is the statusbar area
 
-        // Render terminal popup on top of everything else
-        if let Some(ref popup) = self.terminal_popup {
-            if popup.visible {
-                self.render_terminal_popup(frame, size, popup);
-            }
-        }
     }
 
     /// Render btop-style minimal title with host status colors
@@ -711,63 +653,90 @@ impl TuiApp {
 
         if self.available_hosts.is_empty() {
             let title_text = "cm-dashboard • no hosts discovered";
-            let title = Paragraph::new(title_text).style(Typography::title());
+            let title = Paragraph::new(title_text)
+                .style(Style::default().fg(Theme::background()).bg(Theme::status_color(Status::Unknown)));
             frame.render_widget(title, area);
             return;
         }
 
-        // Create spans for each host with status indicators
-        let mut spans = vec![Span::styled("cm-dashboard • ", Typography::title())];
+        // Calculate worst-case status across all hosts (excluding offline)
+        let mut worst_status = Status::Ok;
+        for host in &self.available_hosts {
+            let host_status = self.calculate_host_status(host, metric_store);
+            // Don't include offline hosts in status aggregation
+            if host_status != Status::Offline {
+                worst_status = Status::aggregate(&[worst_status, host_status]);
+            }
+        }
+
+        // Use the worst status color as background
+        let background_color = Theme::status_color(worst_status);
+
+        // Split the title bar into left and right sections
+        let chunks = Layout::default()
+            .direction(Direction::Horizontal)
+            .constraints([Constraint::Length(15), Constraint::Min(0)])
+            .split(area);
+
+        // Left side: "cm-dashboard" text
+        let left_span = Span::styled(
+            " cm-dashboard", 
+            Style::default().fg(Theme::background()).bg(background_color).add_modifier(Modifier::BOLD)
+        );
+        let left_title = Paragraph::new(Line::from(vec![left_span]))
+            .style(Style::default().bg(background_color));
+        frame.render_widget(left_title, chunks[0]);
+
+        // Right side: hosts with status indicators
+        let mut host_spans = Vec::new();
         
         for (i, host) in self.available_hosts.iter().enumerate() {
             if i > 0 {
-                spans.push(Span::styled(" ", Typography::title()));
+                host_spans.push(Span::styled(
+                    " ", 
+                    Style::default().fg(Theme::background()).bg(background_color)
+                ));
             }
 
-            // Check if this host has a command status that affects the icon
-            let (status_icon, status_color) = if let Some(host_widgets) = self.host_widgets.get(host) {
-                match &host_widgets.command_status {
-                    Some(CommandStatus::InProgress { .. }) => {
-                        // Show working indicator for in-progress commands
-                        ("⏳", Theme::highlight())
-                    }
-                    _ => {
-                        // Normal status icon based on metrics
+            // Always show normal status icon based on metrics (no command status at host level)
             let host_status = self.calculate_host_status(host, metric_store);
-                        (StatusIcons::get_icon(host_status), Theme::status_color(host_status))
-                    }
-                }
-            } else {
-                // No host widgets yet, use normal status
-                let host_status = self.calculate_host_status(host, metric_store);
-                (StatusIcons::get_icon(host_status), Theme::status_color(host_status))
-            };
+            let status_icon = StatusIcons::get_icon(host_status);
 
-            // Add status icon
-            spans.push(Span::styled(
+            // Add status icon with background color as foreground against status background
+            host_spans.push(Span::styled(
                 format!("{} ", status_icon),
-                Style::default().fg(status_color),
+                Style::default().fg(Theme::background()).bg(background_color),
             ));
 
             if Some(host) == self.current_host.as_ref() {
-                // Selected host in bold bright white
-                spans.push(Span::styled(
+                // Selected host in bold background color against status background
+                host_spans.push(Span::styled(
                     host.clone(),
-                    Typography::title().add_modifier(Modifier::BOLD),
+                    Style::default()
+                        .fg(Theme::background())
+                        .bg(background_color)
+                        .add_modifier(Modifier::BOLD),
                 ));
             } else {
-                // Other hosts in normal style with status color
-                spans.push(Span::styled(
+                // Other hosts in normal background color against status background
+                host_spans.push(Span::styled(
                     host.clone(),
-                    Style::default().fg(status_color),
+                    Style::default().fg(Theme::background()).bg(background_color),
                 ));
             }
         }
 
-        let title_line = Line::from(spans);
-        let title = Paragraph::new(vec![title_line]);
+        // Add right padding
+        host_spans.push(Span::styled(
+            " ", 
+            Style::default().fg(Theme::background()).bg(background_color)
+        ));
 
-        frame.render_widget(title, area);
+        let host_line = Line::from(host_spans);
+        let host_title = Paragraph::new(vec![host_line])
+            .style(Style::default().bg(background_color))
+            .alignment(ratatui::layout::Alignment::Right);
+        frame.render_widget(host_title, chunks[1]);
     }
 
     /// Calculate overall status for a host based on its metrics
@@ -775,7 +744,7 @@ impl TuiApp {
         let metrics = metric_store.get_metrics_for_host(hostname);
 
         if metrics.is_empty() {
-            return Status::Unknown;
+            return Status::Offline;
         }
 
         // First check if we have the aggregated host status summary from the agent
@@ -795,7 +764,8 @@ impl TuiApp {
                 Status::Warning => has_warning = true,
                 Status::Pending => has_pending = true,
                 Status::Ok => ok_count += 1,
-                Status::Unknown => {} // Ignore unknown for aggregation
+                Status::Unknown => {}, // Ignore unknown for aggregation
+                Status::Offline => {}, // Ignore offline for aggregation
             }
         }
 
@@ -830,39 +800,22 @@ impl TuiApp {
         let mut shortcuts = Vec::new();
         
         // Global shortcuts
-        shortcuts.push("Tab: Switch Host".to_string());
-        shortcuts.push("Shift+Tab: Switch Panel".to_string());
-        
-        // Scroll shortcuts (always available)
-        shortcuts.push("↑↓: Scroll".to_string());
-        
-        // Panel-specific shortcuts
-        match self.focused_panel {
-            PanelType::System => {
-                shortcuts.push("R: Rebuild".to_string());
-            }
-            PanelType::Services => {
-                shortcuts.push("S: Start".to_string());
-                shortcuts.push("Shift+S: Stop".to_string());
-                shortcuts.push("R: Restart".to_string());
-            }
-            PanelType::Backup => {
-                shortcuts.push("B: Trigger Backup".to_string());
-            }
-        }
+        shortcuts.push("Tab: Host".to_string());
+        shortcuts.push("↑↓/jk: Select".to_string());
+        shortcuts.push("r: Rebuild".to_string());
+        shortcuts.push("s/S: Start/Stop".to_string());
+        shortcuts.push("J: Logs".to_string());
+        shortcuts.push("L: Custom".to_string());
+        shortcuts.push("w: Wake".to_string());
         
         // Always show quit
-        shortcuts.push("Q: Quit".to_string());
+        shortcuts.push("q: Quit".to_string());
         
         shortcuts
     }
 
     fn render_system_panel(&mut self, frame: &mut Frame, area: Rect, _metric_store: &MetricStore) {
-        let system_block = if self.focused_panel == PanelType::System {
-            Components::focused_widget_block("system")
-        } else {
-            Components::widget_block("system")
-        };
+        let system_block = Components::widget_block("system");
         let inner_area = system_block.inner(area);
         frame.render_widget(system_block, area);
         // Get current host widgets, create if none exist
@@ -872,16 +825,12 @@ impl TuiApp {
                 host_widgets.system_scroll_offset
             };
             let host_widgets = self.get_or_create_host_widgets(&hostname);
-            host_widgets.system_widget.render_with_scroll(frame, inner_area, scroll_offset);
+            host_widgets.system_widget.render_with_scroll(frame, inner_area, scroll_offset, &hostname);
         }
     }
 
     fn render_backup_panel(&mut self, frame: &mut Frame, area: Rect) {
-        let backup_block = if self.focused_panel == PanelType::Backup {
-            Components::focused_widget_block("backup")
-        } else {
-            Components::widget_block("backup")
-        };
+        let backup_block = Components::widget_block("backup");
         let inner_area = backup_block.inner(area);
         frame.render_widget(backup_block, area);
 
@@ -896,112 +845,91 @@ impl TuiApp {
         }
     }
 
-    /// Render terminal popup with streaming output
-    fn render_terminal_popup(&self, frame: &mut Frame, area: Rect, popup: &TerminalPopup) {
-        use ratatui::{
-            style::{Color, Style},
-            text::{Line, Span},
-            widgets::{Block, Borders, Clear, Paragraph, Wrap},
-        };
+    /// Render offline host message with wake-up option
+    fn render_offline_host_message(&self, frame: &mut Frame, area: Rect) {
+        use ratatui::layout::Alignment;
+        use ratatui::style::Modifier;
+        use ratatui::text::{Line, Span};
+        use ratatui::widgets::{Block, Borders, Paragraph};
 
-        // Calculate popup size (80% of screen, centered)
-        let popup_width = area.width * 80 / 100;
-        let popup_height = area.height * 80 / 100;
-        let popup_x = (area.width - popup_width) / 2;
-        let popup_y = (area.height - popup_height) / 2;
+        // Get hostname for message
+        let hostname = self.current_host.as_ref()
+            .map(|h| h.as_str())
+            .unwrap_or("Unknown");
 
-        let popup_area = Rect {
-            x: popup_x,
-            y: popup_y,
-            width: popup_width,
-            height: popup_height,
-        };
+        // Check if host has MAC address for wake-on-LAN
+        let has_mac = self.current_host.as_ref()
+            .and_then(|hostname| self.config.hosts.get(hostname))
+            .and_then(|details| details.mac_address.as_ref())
+            .is_some();
 
-        // Clear background
-        frame.render_widget(Clear, popup_area);
+        // Create message content
+        let mut lines = vec![
+            Line::from(Span::styled(
+                format!("Host '{}' is offline", hostname),
+                Style::default().fg(Theme::muted_text()).add_modifier(Modifier::BOLD),
+            )),
+            Line::from(""),
+        ];
 
-        // Create terminal-style block
-        let title = format!(" {} → {} ({:.1}s) ", 
-            popup.hostname, 
-            popup.target,
-            popup.start_time.elapsed().as_secs_f32()
-        );
+        if has_mac {
+            lines.push(Line::from(Span::styled(
+                "Press 'w' to wake up host",
+                Style::default().fg(Theme::primary_text()).add_modifier(Modifier::BOLD),
+            )));
+        } else {
+            lines.push(Line::from(Span::styled(
+                "No MAC address configured - cannot wake up",
+                Style::default().fg(Theme::muted_text()),
+            )));
+        }
 
-        let block = Block::default()
-            .title(title)
+        // Create centered message
+        let message = Paragraph::new(lines)
+            .block(Block::default()
                 .borders(Borders::ALL)
-            .border_style(Style::default().fg(Color::Cyan))
-            .style(Style::default().bg(Color::Black));
+                .border_style(Style::default().fg(Theme::muted_text()))
+                .title(" Offline Host ")
+                .title_style(Style::default().fg(Theme::muted_text()).add_modifier(Modifier::BOLD)))
+            .style(Style::default().bg(Theme::background()).fg(Theme::primary_text()))
+            .alignment(Alignment::Center);
 
-        let inner_area = block.inner(popup_area);
-        frame.render_widget(block, popup_area);
+        // Center the message in the available area
+        let popup_area = ratatui::layout::Layout::default()
+            .direction(Direction::Vertical)
+            .constraints([
+                Constraint::Percentage(40),
+                Constraint::Length(6),
+                Constraint::Percentage(40),
+            ])
+            .split(area)[1];
 
-        // Render output content
-        let available_height = inner_area.height as usize;
-        let total_lines = popup.output_lines.len();
+        let popup_area = ratatui::layout::Layout::default()
+            .direction(Direction::Horizontal)
+            .constraints([
+                Constraint::Percentage(25),
+                Constraint::Percentage(50),
+                Constraint::Percentage(25),
+            ])
+            .split(popup_area)[1];
 
-        // Calculate which lines to show based on scroll offset
-        let start_line = popup.scroll_offset;
-        let end_line = (start_line + available_height).min(total_lines);
-        
-        let visible_lines: Vec<Line> = popup.output_lines[start_line..end_line]
-            .iter()
-            .map(|line| {
-                // Style output lines with terminal colors
-                if line.contains("error") || line.contains("Error") || line.contains("failed") {
-                    Line::from(Span::styled(line.clone(), Style::default().fg(Color::Red)))
-                } else if line.contains("warning") || line.contains("Warning") {
-                    Line::from(Span::styled(line.clone(), Style::default().fg(Color::Yellow)))
-                } else if line.contains("building") || line.contains("Building") {
-                    Line::from(Span::styled(line.clone(), Style::default().fg(Color::Blue)))
-                } else if line.contains("✓") || line.contains("success") || line.contains("completed") {
-                    Line::from(Span::styled(line.clone(), Style::default().fg(Color::Green)))
-                } else {
-                    Line::from(Span::styled(line.clone(), Style::default().fg(Color::White)))
-                }
-            })
-            .collect();
-
-        let content = Paragraph::new(visible_lines)
-            .wrap(Wrap { trim: false })
-            .style(Style::default().bg(Color::Black));
-
-        frame.render_widget(content, inner_area);
-
-        // Render scroll indicator if needed
-        if total_lines > available_height {
-            let scroll_info = format!(" {}% ", 
-                if total_lines > 0 { 
-                    (end_line * 100) / total_lines 
-                } else { 
-                    100 
-                }
-            );
-            
-            let scroll_area = Rect {
-                x: popup_area.x + popup_area.width - scroll_info.len() as u16 - 1,
-                y: popup_area.y + popup_area.height - 1,
-                width: scroll_info.len() as u16,
-                height: 1,
-            };
-            
-            let scroll_widget = Paragraph::new(scroll_info)
-                .style(Style::default().fg(Color::Cyan).bg(Color::Black));
-            frame.render_widget(scroll_widget, scroll_area);
+        frame.render_widget(message, popup_area);
     }
 
-        // Instructions at bottom
-        let instructions = " ESC/Q: Close • ↑↓: Scroll ";
-        let instructions_area = Rect {
-            x: popup_area.x + 1,
-            y: popup_area.y + popup_area.height - 1,
-            width: instructions.len() as u16,
-            height: 1,
-        };
-        
-        let instructions_widget = Paragraph::new(instructions)
-            .style(Style::default().fg(Color::Gray).bg(Color::Black));
-        frame.render_widget(instructions_widget, instructions_area);
+    /// Parse MAC address string (e.g., "AA:BB:CC:DD:EE:FF") to [u8; 6]
+    fn parse_mac_address(mac_str: &str) -> Result<[u8; 6], &'static str> {
+        let parts: Vec<&str> = mac_str.split(':').collect();
+        if parts.len() != 6 {
+            return Err("MAC address must have 6 parts separated by colons");
         }
 
+        let mut mac = [0u8; 6];
+        for (i, part) in parts.iter().enumerate() {
+            match u8::from_str_radix(part, 16) {
+                Ok(byte) => mac[i] = byte,
+                Err(_) => return Err("Invalid hexadecimal byte in MAC address"),
+            }
+        }
+        Ok(mac)
+    }
 }

dashboard/src/ui/theme.rs

@@ -147,6 +147,7 @@ impl Theme {
             Status::Warning => Self::warning(),
             Status::Critical => Self::error(),
             Status::Unknown => Self::muted_text(),
+            Status::Offline => Self::muted_text(), // Dark gray for offline
         }
     }
 
@@ -244,8 +245,9 @@ impl StatusIcons {
             Status::Ok => "●",
             Status::Pending => "◉", // Hollow circle for pending
             Status::Warning => "◐",
-            Status::Critical => "◯",
+            Status::Critical => "!",
             Status::Unknown => "?",
+            Status::Offline => "○", // Empty circle for offline
         }
     }
 
@@ -258,6 +260,7 @@ impl StatusIcons {
             Status::Warning => Theme::warning(),    // Yellow
             Status::Critical => Theme::error(),     // Red
             Status::Unknown => Theme::muted_text(), // Gray
+            Status::Offline => Theme::muted_text(), // Dark gray for offline
         };
 
         vec![
@@ -289,27 +292,9 @@ impl Components {
             )
     }
 
-    /// Widget block with focus indicator (blue border)
-    pub fn focused_widget_block(title: &str) -> Block<'_> {
-        Block::default()
-            .title(title)
-            .borders(Borders::ALL)
-            .style(Style::default().fg(Theme::highlight()).bg(Theme::background())) // Blue border for focus
-            .title_style(
-                Style::default()
-                    .fg(Theme::highlight()) // Blue title for focus
-                    .bg(Theme::background()),
-            )
-    }
 }
 
 impl Typography {
-    /// Main title style (dashboard header)
-    pub fn title() -> Style {
-        Style::default()
-            .fg(Theme::primary_text())
-            .bg(Theme::background())
-    }
 
     /// Widget title style (panel headers) - bold bright white
     pub fn widget_title() -> Style {

dashboard/src/ui/widgets/services.rs

@@ -9,7 +9,7 @@ use tracing::debug;
 
 use super::Widget;
 use crate::ui::theme::{Components, StatusIcons, Theme, Typography};
-use crate::ui::{CommandStatus, CommandType};
+use crate::ui::CommandType;
 use ratatui::style::Style;
 
 /// Services widget displaying hierarchical systemd service statuses
@@ -113,13 +113,10 @@ impl ServicesWidget {
             name.to_string()
         };
 
-        // Parent services always show active/inactive status
+        // Parent services always show actual systemctl status
         let status_str = match info.widget_status {
-            Status::Ok => "active".to_string(),
             Status::Pending => "pending".to_string(),
-            Status::Warning => "inactive".to_string(),
-            Status::Critical => "failed".to_string(),
-            Status::Unknown => "unknown".to_string(),
+            _ => info.status.clone(), // Use actual status from agent (active/inactive/failed)
         };
 
         format!(
@@ -128,26 +125,18 @@ impl ServicesWidget {
         )
     }
 
-    /// Get status icon for service, considering command status for visual feedback
-    fn get_service_icon_and_status(&self, service_name: &str, info: &ServiceInfo, command_status: Option<&CommandStatus>) -> (String, String, ratatui::prelude::Color) {
-        // Check if this service is currently being operated on
-        if let Some(status) = command_status {
-            match status {
-                CommandStatus::InProgress { command_type, target, .. } => {
-                    if target == service_name {
-                        // Only show special icons for service commands
-                        if let Some((icon, status_text)) = match command_type {
-                            CommandType::ServiceRestart => Some(("↻", "restarting")),
-                            CommandType::ServiceStart => Some(("↑", "starting")), 
-                            CommandType::ServiceStop => Some(("↓", "stopping")),
-                            _ => None, // Don't handle non-service commands here
-                        } {
+    /// Get status icon for service, considering pending transitions for visual feedback
+    fn get_service_icon_and_status(&self, service_name: &str, info: &ServiceInfo, pending_transitions: &HashMap<String, (CommandType, String, std::time::Instant)>) -> (String, String, ratatui::prelude::Color) {
+        // Check if this service has a pending transition
+        if let Some((command_type, _original_status, _start_time)) = pending_transitions.get(service_name) {
+            // Show transitional icons for pending commands
+            let (icon, status_text) = match command_type {
+                CommandType::ServiceStart => ("↑", "starting"), 
+                CommandType::ServiceStop => ("↓", "stopping"),
+                _ => return (StatusIcons::get_icon(info.widget_status).to_string(), info.status.clone(), Theme::status_color(info.widget_status)), // Not a service command
+            };
             return (icon.to_string(), status_text.to_string(), Theme::highlight());
         }
-                    }
-                }
-            }
-        }
         
         // Normal status display
         let icon = StatusIcons::get_icon(info.widget_status);
@@ -157,19 +146,20 @@ impl ServicesWidget {
             Status::Warning => Theme::warning(),
             Status::Critical => Theme::error(),
             Status::Unknown => Theme::muted_text(),
+            Status::Offline => Theme::muted_text(),
         };
         
         (icon.to_string(), info.status.clone(), status_color)
     }
 
 
-    /// Create spans for sub-service with icon next to name, considering command status
-    fn create_sub_service_spans_with_status(
+    /// Create spans for sub-service with icon next to name, considering pending transitions
+    fn create_sub_service_spans_with_transitions(
         &self,
         name: &str,
         info: &ServiceInfo,
         is_last: bool,
-        command_status: Option<&CommandStatus>,
+        pending_transitions: &HashMap<String, (CommandType, String, std::time::Instant)>,
     ) -> Vec<ratatui::text::Span<'static>> {
         // Truncate long sub-service names to fit layout (accounting for indentation)
         let short_name = if name.len() > 18 {
@@ -178,11 +168,11 @@ impl ServicesWidget {
             name.to_string()
         };
 
-        // Get status icon and text, considering command status
-        let (icon, mut status_str, status_color) = self.get_service_icon_and_status(name, info, command_status);
+        // Get status icon and text, considering pending transitions
+        let (icon, mut status_str, status_color) = self.get_service_icon_and_status(name, info, pending_transitions);
 
-        // For sub-services, prefer latency if available (unless command is in progress)
-        if command_status.is_none() {
+        // For sub-services, prefer latency if available (unless transition is pending)
+        if !pending_transitions.contains_key(name) {
             if let Some(latency) = info.latency_ms {
                 status_str = if latency < 0.0 {
                     "timeout".to_string()
@@ -240,13 +230,14 @@ impl ServicesWidget {
     /// Get currently selected service name (for actions)
     pub fn get_selected_service(&self) -> Option<String> {
         // Build the same display list to find the selected service
-        let mut display_lines: Vec<(String, Status, bool, Option<(ServiceInfo, bool)>)> = Vec::new();
+        let mut display_lines: Vec<(String, Status, bool, Option<(ServiceInfo, bool)>, String)> = Vec::new();
         
         let mut parent_services: Vec<_> = self.parent_services.iter().collect();
         parent_services.sort_by(|(a, _), (b, _)| a.cmp(b));
 
         for (parent_name, parent_info) in parent_services {
-            display_lines.push((parent_name.clone(), parent_info.widget_status, false, None));
+            let parent_line = self.format_parent_service_line(parent_name, parent_info);
+            display_lines.push((parent_line, parent_info.widget_status, false, None, parent_name.clone()));
             
             if let Some(sub_list) = self.sub_services.get(parent_name) {
                 let mut sorted_subs = sub_list.clone();
@@ -254,17 +245,19 @@ impl ServicesWidget {
                 
                 for (i, (sub_name, sub_info)) in sorted_subs.iter().enumerate() {
                     let is_last_sub = i == sorted_subs.len() - 1;
+                    let full_sub_name = format!("{}_{}", parent_name, sub_name);
                     display_lines.push((
-                        format!("{}_{}", parent_name, sub_name), // Use parent_sub format for sub-services
+                        sub_name.clone(),
                         sub_info.widget_status,
                         true,
                         Some((sub_info.clone(), is_last_sub)),
+                        full_sub_name,
                     ));
                 }
             }
         }
         
-        display_lines.get(self.selected_index).map(|(name, _, _, _)| name.clone())
+        display_lines.get(self.selected_index).map(|(_, _, _, _, raw_name)| raw_name.clone())
     }
 
     /// Get total count of selectable services (parent services only, not sub-services)
@@ -273,6 +266,26 @@ impl ServicesWidget {
         self.parent_services.len()
     }
 
+    /// Get current status of a specific service by name
+    pub fn get_service_status(&self, service_name: &str) -> Option<String> {
+        // Check if it's a parent service
+        if let Some(parent_info) = self.parent_services.get(service_name) {
+            return Some(parent_info.status.clone());
+        }
+        
+        // Check sub-services (format: parent_sub)
+        for (parent_name, sub_list) in &self.sub_services {
+            for (sub_name, sub_info) in sub_list {
+                let full_sub_name = format!("{}_{}", parent_name, sub_name);
+                if full_sub_name == service_name {
+                    return Some(sub_info.status.clone());
+                }
+            }
+        }
+        
+        None
+    }
+
     /// Calculate which parent service index corresponds to a display line index
     fn calculate_parent_service_index(&self, display_line_index: &usize) -> usize {
         // Build the same display list to map line index to parent service index
@@ -426,13 +439,9 @@ impl Widget for ServicesWidget {
 
 impl ServicesWidget {
 
-    /// Render with focus, scroll, and command status for visual feedback
-    pub fn render_with_command_status(&mut self, frame: &mut Frame, area: Rect, is_focused: bool, scroll_offset: usize, command_status: Option<&CommandStatus>) {
-        let services_block = if is_focused {
-            Components::focused_widget_block("services")
-        } else {
-            Components::widget_block("services")
-        };
+    /// Render with focus, scroll, and pending transitions for visual feedback
+    pub fn render_with_transitions(&mut self, frame: &mut Frame, area: Rect, is_focused: bool, scroll_offset: usize, pending_transitions: &HashMap<String, (CommandType, String, std::time::Instant)>) {
+        let services_block = Components::widget_block("services");
         let inner_area = services_block.inner(area);
         frame.render_widget(services_block, area);
 
@@ -456,14 +465,14 @@ impl ServicesWidget {
             return;
         }
 
-        // Use the existing render logic but with command status
-        self.render_services_with_status(frame, content_chunks[1], is_focused, scroll_offset, command_status);
+        // Use the existing render logic but with pending transitions
+        self.render_services_with_transitions(frame, content_chunks[1], is_focused, scroll_offset, pending_transitions);
     }
 
-    /// Render services list with command status awareness
-    fn render_services_with_status(&mut self, frame: &mut Frame, area: Rect, is_focused: bool, scroll_offset: usize, command_status: Option<&CommandStatus>) {
-        // Build hierarchical service list for display (same as existing logic)
-        let mut display_lines: Vec<(String, Status, bool, Option<(ServiceInfo, bool)>)> = Vec::new();
+    /// Render services list with pending transitions awareness
+    fn render_services_with_transitions(&mut self, frame: &mut Frame, area: Rect, is_focused: bool, scroll_offset: usize, pending_transitions: &HashMap<String, (CommandType, String, std::time::Instant)>) {
+        // Build hierarchical service list for display - include raw service name for pending transition lookups
+        let mut display_lines: Vec<(String, Status, bool, Option<(ServiceInfo, bool)>, String)> = Vec::new(); // Added raw service name
 
         // Sort parent services alphabetically for consistent order
         let mut parent_services: Vec<_> = self.parent_services.iter().collect();
@@ -472,7 +481,7 @@ impl ServicesWidget {
         for (parent_name, parent_info) in parent_services {
             // Add parent service line
             let parent_line = self.format_parent_service_line(parent_name, parent_info);
-            display_lines.push((parent_line, parent_info.widget_status, false, None)); // false = not sub-service
+            display_lines.push((parent_line, parent_info.widget_status, false, None, parent_name.clone())); // Include raw name
 
             // Add sub-services for this parent (if any)
             if let Some(sub_list) = self.sub_services.get(parent_name) {
@@ -482,12 +491,14 @@ impl ServicesWidget {
 
                 for (i, (sub_name, sub_info)) in sorted_subs.iter().enumerate() {
                     let is_last_sub = i == sorted_subs.len() - 1;
+                    let full_sub_name = format!("{}_{}", parent_name, sub_name);
                     // Store sub-service info for custom span rendering
                     display_lines.push((
                         sub_name.clone(),
                         sub_info.widget_status,
                         true,
                         Some((sub_info.clone(), is_last_sub)),
+                        full_sub_name, // Raw service name for pending transition lookup
                     )); // true = sub-service, with is_last info
                 }
             }
@@ -520,7 +531,7 @@ impl ServicesWidget {
                 .constraints(vec![Constraint::Length(1); lines_to_show])
                 .split(area);
 
-            for (i, (line_text, line_status, is_sub, sub_info)) in visible_lines.iter().enumerate()
+            for (i, (line_text, line_status, is_sub, sub_info, raw_service_name)) in visible_lines.iter().enumerate()
             {
                 let actual_index = effective_scroll + i; // Real index in the full list
                 
@@ -534,46 +545,48 @@ impl ServicesWidget {
                 };
                 
                 let mut spans = if *is_sub && sub_info.is_some() {
-                    // Use custom sub-service span creation WITH command status
+                    // Use custom sub-service span creation WITH pending transitions
                     let (service_info, is_last) = sub_info.as_ref().unwrap();
-                    self.create_sub_service_spans_with_status(line_text, service_info, *is_last, command_status)
+                    self.create_sub_service_spans_with_transitions(line_text, service_info, *is_last, pending_transitions)
                 } else {
-                    // Parent services - check if this parent service has a command in progress
-                    let service_spans = if let Some(status) = command_status {
-                        match status {
-                            CommandStatus::InProgress { target, .. } => {
-                                if target == line_text {
-                                    // Create spans with progress status
-                                    let (icon, status_text, status_color) = self.get_service_icon_and_status(line_text, &ServiceInfo { 
+                    // Parent services - check if this parent service has a pending transition using RAW service name
+                    if pending_transitions.contains_key(raw_service_name) {
+                        // Create spans with transitional status
+                        let (icon, status_text, _) = self.get_service_icon_and_status(raw_service_name, &ServiceInfo { 
                             status: "".to_string(), 
                             memory_mb: None, 
                             disk_gb: None, 
                             latency_ms: None, 
                             widget_status: *line_status 
-                                    }, command_status);
+                        }, pending_transitions);
+                        
+                        // Use blue for transitional icons when not selected, background color when selected
+                        let icon_color = if is_selected && !*is_sub && is_focused {
+                            Theme::background() // Dark background color for visibility against blue selection
+                        } else {
+                            Theme::highlight() // Blue for normal case
+                        };
+                        
                         vec![
-                                        ratatui::text::Span::styled(format!("{} ", icon), Style::default().fg(status_color)),
+                            ratatui::text::Span::styled(format!("{} ", icon), Style::default().fg(icon_color)),
                             ratatui::text::Span::styled(line_text.clone(), Style::default().fg(Theme::primary_text())),
-                                        ratatui::text::Span::styled(format!(" {}", status_text), Style::default().fg(status_color)),
+                            ratatui::text::Span::styled(format!(" {}", status_text), Style::default().fg(icon_color)),
                         ]
                     } else {
                         StatusIcons::create_status_spans(*line_status, line_text)
                     }
-                            }
-                        }
-                    } else {
-                        StatusIcons::create_status_spans(*line_status, line_text)
-                    };
-                    service_spans
                 };
                 
-                // Apply selection highlighting to parent services only, preserving status icon color
+                // Apply selection highlighting to parent services only, making icons background color when selected
                 // Only show selection when Services panel is focused
+                // Show selection highlighting even when transitional icons are present
                 if is_selected && !*is_sub && is_focused {
                     for (i, span) in spans.iter_mut().enumerate() {
                         if i == 0 {
-                            // First span is the status icon - preserve its color
-                            span.style = span.style.bg(Theme::highlight());
+                            // First span is the status icon - use background color for visibility against blue selection
+                            span.style = span.style
+                                .bg(Theme::highlight())
+                                .fg(Theme::background());
                         } else {
                             // Other spans (text) get full selection highlighting
                             span.style = span.style

dashboard/src/ui/widgets/system.rs

@@ -15,7 +15,6 @@ pub struct SystemWidget {
     // NixOS information
     nixos_build: Option<String>,
     config_hash: Option<String>,
-    active_users: Option<String>,
     agent_hash: Option<String>,
     
     // CPU metrics
@@ -33,6 +32,7 @@ pub struct SystemWidget {
     tmp_used_gb: Option<f32>,
     tmp_total_gb: Option<f32>,
     memory_status: Status,
+    tmp_status: Status,
     
     // Storage metrics (collected from disk metrics)
     storage_pools: Vec<StoragePool>,
@@ -66,7 +66,6 @@ impl SystemWidget {
         Self {
             nixos_build: None,
             config_hash: None,
-            active_users: None,
             agent_hash: None,
             cpu_load_1min: None,
             cpu_load_5min: None,
@@ -80,6 +79,7 @@ impl SystemWidget {
             tmp_used_gb: None,
             tmp_total_gb: None,
             memory_status: Status::Unknown,
+            tmp_status: Status::Unknown,
             storage_pools: Vec::new(),
             has_data: false,
         }
@@ -230,20 +230,49 @@ impl SystemWidget {
 
     /// Extract pool name from disk metric name
     fn extract_pool_name(&self, metric_name: &str) -> Option<String> {
-        if let Some(captures) = metric_name.strip_prefix("disk_") {
+        // Pattern: disk_{pool_name}_{drive_name}_{metric_type}
+        // Since pool_name can contain underscores, work backwards from known metric suffixes
+        if metric_name.starts_with("disk_") {
+            // First try drive-specific metrics that have device names
+            if let Some(suffix_pos) = metric_name.rfind("_temperature")
+                .or_else(|| metric_name.rfind("_wear_percent"))
+                .or_else(|| metric_name.rfind("_health")) {
+                // Find the second-to-last underscore to get pool name
+                let before_suffix = &metric_name[..suffix_pos];
+                if let Some(drive_start) = before_suffix.rfind('_') {
+                    return Some(metric_name[5..drive_start].to_string()); // Skip "disk_"
+                }
+            }
+            // For pool-level metrics (usage_percent, used_gb, total_gb), take everything before the metric suffix
+            else if let Some(suffix_pos) = metric_name.rfind("_usage_percent")
+                .or_else(|| metric_name.rfind("_used_gb"))
+                .or_else(|| metric_name.rfind("_total_gb")) {
+                return Some(metric_name[5..suffix_pos].to_string()); // Skip "disk_"
+            }
+            // Fallback to old behavior for unknown patterns
+            else if let Some(captures) = metric_name.strip_prefix("disk_") {
                 if let Some(pos) = captures.find('_') {
                     return Some(captures[..pos].to_string());
                 }
             }
+        }
         None
     }
 
     /// Extract drive name from disk metric name  
     fn extract_drive_name(&self, metric_name: &str) -> Option<String> {
-        // Pattern: disk_pool_drive_metric
-        let parts: Vec<&str> = metric_name.split('_').collect();
-        if parts.len() >= 3 && parts[0] == "disk" {
-            return Some(parts[2].to_string());
+        // Pattern: disk_{pool_name}_{drive_name}_{metric_type}
+        // Since pool_name can contain underscores, work backwards from known metric suffixes
+        if metric_name.starts_with("disk_") {
+            if let Some(suffix_pos) = metric_name.rfind("_temperature")
+                .or_else(|| metric_name.rfind("_wear_percent"))
+                .or_else(|| metric_name.rfind("_health")) {
+                // Find the second-to-last underscore to get the drive name
+                let before_suffix = &metric_name[..suffix_pos];
+                if let Some(drive_start) = before_suffix.rfind('_') {
+                    return Some(before_suffix[drive_start + 1..].to_string());
+                }
+            }
         }
         None
     }
@@ -334,11 +363,6 @@ impl Widget for SystemWidget {
                         self.config_hash = Some(hash.clone());
                     }
                 }
-                "system_active_users" => {
-                    if let MetricValue::String(users) = &metric.value {
-                        self.active_users = Some(users.clone());
-                    }
-                }
                 "agent_version" => {
                     if let MetricValue::String(version) = &metric.value {
                         self.agent_hash = Some(version.clone());
@@ -390,6 +414,7 @@ impl Widget for SystemWidget {
                 "memory_tmp_usage_percent" => {
                     if let MetricValue::Float(usage) = metric.value {
                         self.tmp_usage_percent = Some(usage);
+                        self.tmp_status = metric.status.clone();
                     }
                 }
                 "memory_tmp_used_gb" => {
@@ -414,12 +439,12 @@ impl Widget for SystemWidget {
 
 impl SystemWidget {
     /// Render with scroll offset support
-    pub fn render_with_scroll(&mut self, frame: &mut Frame, area: Rect, scroll_offset: usize) {
+    pub fn render_with_scroll(&mut self, frame: &mut Frame, area: Rect, scroll_offset: usize, hostname: &str) {
         let mut lines = Vec::new();
 
         // NixOS section
         lines.push(Line::from(vec![
-            Span::styled("NixOS:", Typography::widget_title())
+            Span::styled(format!("NixOS {}:", hostname), Typography::widget_title())
         ]));
         
         let build_text = self.nixos_build.as_deref().unwrap_or("unknown");
@@ -432,10 +457,6 @@ impl SystemWidget {
             Span::styled(format!("Agent: {}", agent_version_text), Typography::secondary())
         ]));
         
-        let users_text = self.active_users.as_deref().unwrap_or("unknown");
-        lines.push(Line::from(vec![
-            Span::styled(format!("Active users: {}", users_text), Typography::secondary())
-        ]));
 
         // CPU section
         lines.push(Line::from(vec![
@@ -472,7 +493,7 @@ impl SystemWidget {
             Span::styled("  └─ ", Typography::tree()),
         ];
         tmp_spans.extend(StatusIcons::create_status_spans(
-            self.memory_status.clone(),
+            self.tmp_status.clone(),
             &format!("/tmp: {}", tmp_text)
         ));
         lines.push(Line::from(tmp_spans));

hardcoded_values_removed.md

@@ -1,88 +0,0 @@
-# Hardcoded Values Removed - Configuration Summary
-
-## ✅ All Hardcoded Values Converted to Configuration
-
-### **1. SystemD Nginx Check Interval**
-- **Before**: `nginx_check_interval_seconds: 30` (hardcoded)
-- **After**: `nginx_check_interval_seconds: config.nginx_check_interval_seconds`
-- **NixOS Config**: `nginx_check_interval_seconds = 30;`
-
-### **2. ZMQ Transmission Interval**  
-- **Before**: `Duration::from_secs(1)` (hardcoded)
-- **After**: `Duration::from_secs(self.config.zmq.transmission_interval_seconds)`
-- **NixOS Config**: `transmission_interval_seconds = 1;`
-
-### **3. HTTP Timeouts in SystemD Collector**
-- **Before**: 
-  ```rust
-  .timeout(Duration::from_secs(10))
-  .connect_timeout(Duration::from_secs(10))
-  ```
-- **After**:
-  ```rust
-  .timeout(Duration::from_secs(self.config.http_timeout_seconds))
-  .connect_timeout(Duration::from_secs(self.config.http_connect_timeout_seconds))
-  ```
-- **NixOS Config**: 
-  ```nix
-  http_timeout_seconds = 10;
-  http_connect_timeout_seconds = 10;
-  ```
-
-## **Configuration Structure Changes**
-
-### **SystemdConfig** (agent/src/config/mod.rs)
-```rust
-pub struct SystemdConfig {
-    // ... existing fields ...
-    pub nginx_check_interval_seconds: u64,      // NEW
-    pub http_timeout_seconds: u64,              // NEW
-    pub http_connect_timeout_seconds: u64,      // NEW
-}
-```
-
-### **ZmqConfig** (agent/src/config/mod.rs)
-```rust
-pub struct ZmqConfig {
-    // ... existing fields ...
-    pub transmission_interval_seconds: u64,     // NEW
-}
-```
-
-## **NixOS Configuration Updates**
-
-### **ZMQ Section** (hosts/common/cm-dashboard.nix)
-```nix
-zmq = {
-  # ... existing fields ...
-  transmission_interval_seconds = 1;           # NEW
-};
-```
-
-### **SystemD Section** (hosts/common/cm-dashboard.nix)
-```nix
-systemd = {
-  # ... existing fields ...
-  nginx_check_interval_seconds = 30;           # NEW  
-  http_timeout_seconds = 10;                   # NEW
-  http_connect_timeout_seconds = 10;           # NEW
-};
-```
-
-## **Benefits**
-
-✅ **No hardcoded values** - All timing/timeout values configurable  
-✅ **Consistent configuration** - Everything follows NixOS config pattern  
-✅ **Environment-specific tuning** - Can adjust timeouts per deployment  
-✅ **Maintainability** - No magic numbers scattered in code  
-✅ **Testing flexibility** - Can configure different values for testing  
-
-## **Runtime Behavior**
-
-All previously hardcoded values now respect configuration:
-- **Nginx latency checks**: Every 30s (configurable)
-- **ZMQ transmission**: Every 1s (configurable)  
-- **HTTP requests**: 10s timeout (configurable)
-- **HTTP connections**: 10s timeout (configurable)
-
-The codebase is now **100% configuration-driven** with no hardcoded timing values.

shared/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard-shared"
-version = "0.1.19"
+version = "0.1.66"
 edition = "2021"
 
 [dependencies]

shared/src/metrics.rs

@@ -87,6 +87,7 @@ pub enum Status {
     Warning,
     Critical,
     Unknown,
+    Offline,
 }
 
 impl Status {
@@ -190,6 +191,16 @@ impl HysteresisThresholds {
                     Status::Ok
                 }
             }
+            Status::Offline => {
+                // Host coming back online, use normal thresholds like first measurement
+                if value >= self.critical_high {
+                    Status::Critical
+                } else if value >= self.warning_high {
+                    Status::Warning
+                } else {
+                    Status::Ok
+                }
+            }
         }
     }
 }

test_intervals.sh

@@ -1,42 +0,0 @@
-#!/bin/bash
-
-# Test script to verify collector intervals are working correctly
-# Expected behavior:
-# - CPU/Memory: Every 2 seconds
-# - Systemd/Network: Every 10 seconds  
-# - Backup/NixOS: Every 60 seconds
-# - Disk: Every 300 seconds (5 minutes)
-
-echo "=== Testing Collector Interval Implementation ==="
-echo "Expected intervals from NixOS config:"
-echo "  CPU: 2s, Memory: 2s"
-echo "  Systemd: 10s, Network: 10s" 
-echo "  Backup: 60s, NixOS: 60s"
-echo "  Disk: 300s (5m)"
-echo ""
-
-# Note: Cannot run actual agent without proper config, but we can verify the code logic
-echo "✅ Code Implementation Status:"
-echo "  - TimedCollector struct with interval tracking: IMPLEMENTED"
-echo "  - Individual collector intervals from config: IMPLEMENTED"  
-echo "  - collect_metrics_timed() respects intervals: IMPLEMENTED"
-echo "  - Debug logging shows interval compliance: IMPLEMENTED"
-echo ""
-
-echo "🔍 Key Implementation Details:"
-echo "  - MetricCollectionManager now tracks last_collection time per collector"
-echo "  - Each collector gets Duration::from_secs(config.{collector}.interval_seconds)"
-echo "  - Only collectors with elapsed >= interval are called"
-echo "  - Debug logs show actual collection with interval info"
-echo ""
-
-echo "📊 Expected Runtime Behavior:"
-echo "  At 0s:  All collectors run (startup)"
-echo "  At 2s:  CPU, Memory run"
-echo "  At 4s:  CPU, Memory run"  
-echo "  At 10s: CPU, Memory, Systemd, Network run"
-echo "  At 60s: CPU, Memory, Systemd, Network, Backup, NixOS run"
-echo "  At 300s: All collectors run including Disk"
-echo ""
-
-echo "✅ CONCLUSION: Codebase now follows NixOS configuration intervals correctly!"

test_tmux_check.rs

@@ -1,32 +0,0 @@
-#!/usr/bin/env rust-script
-
-use std::process;
-
-/// Check if running inside tmux session
-fn check_tmux_session() {
-    // Check for TMUX environment variable which is set when inside a tmux session
-    if std::env::var("TMUX").is_err() {
-        eprintln!("╭─────────────────────────────────────────────────────────────╮");
-        eprintln!("│                        ⚠️  TMUX REQUIRED                      │");
-        eprintln!("├─────────────────────────────────────────────────────────────┤");
-        eprintln!("│  CM Dashboard must be run inside a tmux session for proper   │");
-        eprintln!("│  terminal handling and remote operation functionality.       │");
-        eprintln!("│                                                             │");
-        eprintln!("│  Please start a tmux session first:                        │");
-        eprintln!("│    tmux new-session -d -s dashboard cm-dashboard           │");
-        eprintln!("│    tmux attach-session -t dashboard                        │");
-        eprintln!("│                                                             │");
-        eprintln!("│  Or simply:                                                 │");
-        eprintln!("│    tmux                                                     │");
-        eprintln!("│    cm-dashboard                                             │");
-        eprintln!("╰─────────────────────────────────────────────────────────────╯");
-        process::exit(1);
-    } else {
-        println!("✅ Running inside tmux session - OK");
-    }
-}
-
-fn main() {
-    println!("Testing tmux check function...");
-    check_tmux_session();
-}

test_tmux_simulation.sh

@@ -1,53 +0,0 @@
-#!/bin/bash
-
-echo "=== TMUX Check Implementation Test ==="
-echo ""
-
-echo "📋 Testing tmux check logic:"
-echo ""
-
-echo "1. Current environment:"
-if [ -n "$TMUX" ]; then
-    echo "   ✅ Running inside tmux session"
-    echo "   TMUX variable: $TMUX"
-else
-    echo "   ❌ NOT running inside tmux session"
-    echo "   TMUX variable: (not set)"
-fi
-echo ""
-
-echo "2. Simulating dashboard tmux check logic:"
-echo ""
-
-# Simulate the Rust check logic
-if [ -z "$TMUX" ]; then
-    echo "   Dashboard would show:"
-    echo "   ╭─────────────────────────────────────────────────────────────╮"
-    echo "   │                        ⚠️  TMUX REQUIRED                      │"
-    echo "   ├─────────────────────────────────────────────────────────────┤"
-    echo "   │  CM Dashboard must be run inside a tmux session for proper   │"
-    echo "   │  terminal handling and remote operation functionality.       │"
-    echo "   │                                                             │"
-    echo "   │  Please start a tmux session first:                        │"
-    echo "   │    tmux new-session -d -s dashboard cm-dashboard           │"
-    echo "   │    tmux attach-session -t dashboard                        │"
-    echo "   │                                                             │"
-    echo "   │  Or simply:                                                 │"
-    echo "   │    tmux                                                     │"
-    echo "   │    cm-dashboard                                             │"
-    echo "   ╰─────────────────────────────────────────────────────────────╯"
-    echo "   Then exit with code 1"
-else
-    echo "   ✅ Dashboard tmux check would PASS - continuing normally"
-fi
-echo ""
-
-echo "3. Implementation status:"
-echo "   ✅ check_tmux_session() function added to dashboard/src/main.rs"
-echo "   ✅ Called early in main() but only for TUI mode (not headless)"
-echo "   ✅ Uses std::env::var(\"TMUX\") to detect tmux session"
-echo "   ✅ Shows helpful error message with usage instructions"
-echo "   ✅ Exits with code 1 if not in tmux"
-echo ""
-
-echo "✅ TMUX check implementation complete!"