Bump version to v0.1.196

This reverts commit 2740de9b54.

CLAUDE.md

@@ -156,6 +156,56 @@ Complete migration from string-based metrics to structured JSON data. Eliminates
 - ✅ Backward compatibility via bridge conversion to existing UI widgets
 - ✅ All string parsing bugs eliminated
 
+### Cached Collector Architecture (🚧 PLANNED)
+
+**Problem:** Blocking collectors prevent timely ZMQ transmission, causing false "host offline" alerts.
+
+**Previous (Sequential Blocking):**
+```
+Every 1 second:
+  └─ collect_all_data() [BLOCKS for 2-10+ seconds]
+      ├─ CPU (fast: 10ms)
+      ├─ Memory (fast: 20ms)
+      ├─ Disk SMART (slow: 3s per drive × 4 drives = 12s)
+      ├─ Service disk usage (slow: 2-8s per service)
+      └─ Docker (medium: 500ms)
+  └─ send_via_zmq()  [Only after ALL collection completes]
+
+Result: If any collector takes >10s → "host offline" false alert
+```
+
+**New (Cached Independent Collectors):**
+```
+Shared Cache: Arc<RwLock<AgentData>>
+
+Background Collectors (independent async tasks):
+├─ Fast collectors (CPU, RAM, Network)
+│   └─ Update cache every 1 second
+├─ Medium collectors (Services, Docker)
+│   └─ Update cache every 5 seconds
+└─ Slow collectors (Disk usage, SMART data)
+    └─ Update cache every 60 seconds
+
+ZMQ Sender (separate async task):
+Every 1 second:
+  └─ Read current cache
+  └─ Send via ZMQ [Always instant, never blocked]
+```
+
+**Benefits:**
+- ✅ ZMQ sends every 1 second regardless of collector speed
+- ✅ No false "host offline" alerts from slow collectors
+- ✅ Different update rates for different metrics (CPU=1s, SMART=60s)
+- ✅ System stays responsive even with slow operations
+- ✅ Slow collectors can use longer timeouts without blocking
+
+**Implementation:**
+- Shared `AgentData` cache wrapped in `Arc<RwLock<>>`
+- Each collector spawned as independent tokio task
+- Collectors update their section of cache at their own rate
+- ZMQ sender reads cache every 1s and transmits
+- Stale data acceptable for slow-changing metrics (disk usage, SMART)
+
 ### Maintenance Mode
 
 - Agent checks for `/tmp/cm-maintenance` file before sending notifications

Cargo.lock

@@ -1,6 +1,5 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-# This file is automatically generated by Cargo.
 version = 4
 
 [[package]]
@@ -165,9 +164,9 @@ checksum = "df8670b8c7b9dae1793364eafadf7239c40d669904660c5960d74cfd80b46a53"
 
 [[package]]
 name = "cc"
-version = "1.2.46"
+version = "1.2.47"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b97463e1064cb1b1c1384ad0a0b9c8abd0988e2a91f52606c80ef14aadb63e36"
+checksum = "cd405d82c84ff7f35739f175f67d8b9fb7687a0e84ccdc78bd3568839827cf07"
 dependencies = [
  "find-msvc-tools",
  "jobserver",
@@ -239,9 +238,9 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "4.5.52"
+version = "4.5.53"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aa8120877db0e5c011242f96806ce3c94e0737ab8108532a76a3300a01db2ab8"
+checksum = "c9e340e012a1bf4935f5282ed1436d1489548e8f72308207ea5df0e23d2d03f8"
 dependencies = [
  "clap_builder",
  "clap_derive",
@@ -249,9 +248,9 @@ dependencies = [
 
 [[package]]
 name = "clap_builder"
-version = "4.5.52"
+version = "4.5.53"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02576b399397b659c26064fbc92a75fede9d18ffd5f80ca1cd74ddab167016e1"
+checksum = "d76b5d13eaa18c901fd2f7fca939fefe3a0727a953561fefdf3b2922b8569d00"
 dependencies = [
  "anstream",
  "anstyle",
@@ -279,7 +278,7 @@ checksum = "a1d728cc89cf3aee9ff92b05e62b19ee65a02b5702cff7d5a377e32c6ae29d8d"
 
 [[package]]
 name = "cm-dashboard"
-version = "0.1.188"
+version = "0.1.196"
 dependencies = [
  "anyhow",
  "chrono",
@@ -301,7 +300,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-agent"
-version = "0.1.188"
+version = "0.1.196"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -324,7 +323,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-shared"
-version = "0.1.188"
+version = "0.1.196"
 dependencies = [
  "chrono",
  "serde",
@@ -664,9 +663,9 @@ dependencies = [
 
 [[package]]
 name = "hashbrown"
-version = "0.16.0"
+version = "0.16.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5419bdc4f6a9207fbeba6d11b604d481addf78ecd10c11ad51e76c2f6482748d"
+checksum = "841d1cc9bed7f9236f321df977030373f4a4163ae1a7dbfe1a51a2c1a51d9100"
 
 [[package]]
 name = "heck"
@@ -879,12 +878,12 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "2.12.0"
+version = "2.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6717a8d2a5a929a1a2eb43a12812498ed141a0bcfb7e8f7844fbdbe4303bba9f"
+checksum = "0ad4bb2b565bca0645f4d68c5c9af97fba094e9791da685bf83cb5f3ce74acf2"
 dependencies = [
  "equivalent",
- "hashbrown 0.16.0",
+ "hashbrown 0.16.1",
 ]
 
 [[package]]
@@ -1639,9 +1638,9 @@ dependencies = [
 
 [[package]]
 name = "signal-hook-registry"
-version = "1.4.6"
+version = "1.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b2a4719bff48cee6b39d12c020eeb490953ad2443b7055bd0b21fca26bd8c28b"
+checksum = "7664a098b8e616bdfcc2dc0e9ac44eb231eedf41db4e9fe95d8d32ec728dedad"
 dependencies = [
  "libc",
 ]
@@ -1733,9 +1732,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.110"
+version = "2.0.111"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a99801b5bd34ede4cf3fc688c5919368fea4e4814a4664359503e6015b280aea"
+checksum = "390cc9a294ab71bdb1aa2e99d13be9c753cd2d7bd6560c77118597410c4d2e87"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1962,9 +1961,9 @@ dependencies = [
 
 [[package]]
 name = "tracing-attributes"
-version = "0.1.30"
+version = "0.1.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "81383ab64e72a7a8b8e13130c49e3dab29def6d0c7d76a03087b3cf71c5c6903"
+checksum = "7490cfa5ec963746568740651ac6781f701c9c5ea257c58e057f3ba8cf69e8da"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1973,9 +1972,9 @@ dependencies = [
 
 [[package]]
 name = "tracing-core"
-version = "0.1.34"
+version = "0.1.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b9d12581f227e93f094d3af2ae690a574abb8a2b9b7a96e7cfe9647b2b617678"
+checksum = "7a04e24fab5c89c6a36eb8558c9656f30d81de51dfa4d3b45f26b21d61fa0a6c"
 dependencies = [
  "once_cell",
  "valuable",
@@ -2513,9 +2512,9 @@ checksum = "d6bbff5f0aada427a1e5a6da5f1f98158182f26556f345ac9e04d36d0ebed650"
 
 [[package]]
 name = "winnow"
-version = "0.7.13"
+version = "0.7.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "21a0236b59786fed61e2a80582dd500fe61f18b5dca67a4a067d0bc9039339cf"
+checksum = "5a5364e9d77fcdeeaa6062ced926ee3381faa2ee02d3eb83a5c27a8825540829"
 dependencies = [
  "memchr",
 ]
@@ -2567,18 +2566,18 @@ dependencies = [
 
 [[package]]
 name = "zerocopy"
-version = "0.8.27"
+version = "0.8.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0894878a5fa3edfd6da3f88c4805f4c8558e2b996227a3d864f47fe11e38282c"
+checksum = "4ea879c944afe8a2b25fef16bb4ba234f47c694565e97383b36f3a878219065c"
 dependencies = [
  "zerocopy-derive",
 ]
 
 [[package]]
 name = "zerocopy-derive"
-version = "0.8.27"
+version = "0.8.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "88d2b8d9c68ad2b9e4340d7832716a4d21a22a1154777ad56ea55c51a9cf3831"
+checksum = "cf955aa904d6040f70dc8e9384444cb1030aed272ba3cb09bbc4ab9e7c1f34f5"
 dependencies = [
  "proc-macro2",
  "quote",

agent/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard-agent"
-version = "0.1.189"
+version = "0.1.196"
 edition = "2021"
 
 [dependencies]

agent/src/collectors/systemd.rs

@@ -113,6 +113,7 @@ impl SystemdCollector {
                                 name: site_name.clone(),
                                 service_status: self.calculate_service_status(&site_name, &site_status),
                                 metrics,
+                                service_type: "nginx_site".to_string(),
                             });
                         }
                     }
@@ -128,12 +129,13 @@ impl SystemdCollector {
                                 name: container_name.clone(),
                                 service_status: self.calculate_service_status(&container_name, &container_status),
                                 metrics,
+                                service_type: "container".to_string(),
                             });
                         }
 
                         // Add Docker images
                         let docker_images = self.get_docker_images();
-                        for (image_name, image_status, image_size_str, image_size_mb) in docker_images {
+                        for (image_name, image_status, image_size_mb) in docker_images {
                             let mut metrics = Vec::new();
                             metrics.push(SubServiceMetric {
                                 label: "size".to_string(),
@@ -142,9 +144,10 @@ impl SystemdCollector {
                             });
 
                             sub_services.push(SubServiceData {
-                                name: format!("{} ({})", image_name, image_size_str),
+                                name: image_name.to_string(),
                                 service_status: self.calculate_service_status(&image_name, &image_status),
                                 metrics,
+                                service_type: "image".to_string(),
                             });
                         }
                     }
@@ -824,7 +827,7 @@ impl SystemdCollector {
     }
 
     /// Get docker images as sub-services
-    fn get_docker_images(&self) -> Vec<(String, String, String, f32)> {
+    fn get_docker_images(&self) -> Vec<(String, String, f32)> {
         let mut images = Vec::new();
         // Check if docker is available (cm-agent user is in docker group) with 3 second timeout
         let output = Command::new("timeout")
@@ -865,9 +868,8 @@ impl SystemdCollector {
                 let size_mb = self.parse_docker_size(size_str);
 
                 images.push((
-                    format!("I {}", image_name),
+                    image_name.to_string(),
                     "inactive".to_string(), // Images are informational - use inactive for neutral display
-                    size_str.to_string(),
                     size_mb
                 ));
             }

dashboard/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard"
-version = "0.1.189"
+version = "0.1.196"
 edition = "2021"
 
 [dependencies]

dashboard/src/ui/widgets/services.rs

@@ -32,6 +32,7 @@ struct ServiceInfo {
     disk_gb: Option<f32>,
     metrics: Vec<(String, f32, Option<String>)>, // (label, value, unit)
     widget_status: Status,
+    service_type: String, // "nginx_site", "container", "image", or empty for parent services
 }
 
 impl ServicesWidget {
@@ -169,7 +170,7 @@ impl ServicesWidget {
             // Convert Status enum to display text for sub-services
             match info.widget_status {
                 Status::Ok => "active",
-                Status::Inactive => "inactive", 
+                Status::Inactive => "inactive",
                 Status::Critical => "failed",
                 Status::Pending => "pending",
                 Status::Warning => "warning",
@@ -179,32 +180,62 @@ impl ServicesWidget {
         };
         let tree_symbol = if is_last { "└─" } else { "├─" };
 
-        vec![
-            // Indentation and tree prefix
-            ratatui::text::Span::styled(
-                format!("  {} ", tree_symbol),
-                Typography::tree(),
-            ),
-            // Status icon
-            ratatui::text::Span::styled(
-                format!("{} ", icon),
-                Style::default().fg(status_color).bg(Theme::background()),
-            ),
-            // Service name
-            ratatui::text::Span::styled(
-                format!("{:<18} ", short_name),
-                Style::default()
-                    .fg(Theme::secondary_text())
-                    .bg(Theme::background()),
-            ),
-            // Status/latency text
-            ratatui::text::Span::styled(
-                status_str,
-                Style::default()
-                    .fg(Theme::secondary_text())
-                    .bg(Theme::background()),
-            ),
-        ]
+        // Docker images use docker whale icon
+        if info.service_type == "image" {
+            vec![
+                // Indentation and tree prefix
+                ratatui::text::Span::styled(
+                    format!("  {} ", tree_symbol),
+                    Typography::tree(),
+                ),
+                // Docker icon (simple character for performance)
+                ratatui::text::Span::styled(
+                    "D ".to_string(),
+                    Style::default().fg(Theme::highlight()).bg(Theme::background()),
+                ),
+                // Service name
+                ratatui::text::Span::styled(
+                    format!("{:<18} ", short_name),
+                    Style::default()
+                        .fg(Theme::secondary_text())
+                        .bg(Theme::background()),
+                ),
+                // Status/metrics text
+                ratatui::text::Span::styled(
+                    status_str,
+                    Style::default()
+                        .fg(Theme::secondary_text())
+                        .bg(Theme::background()),
+                ),
+            ]
+        } else {
+            vec![
+                // Indentation and tree prefix
+                ratatui::text::Span::styled(
+                    format!("  {} ", tree_symbol),
+                    Typography::tree(),
+                ),
+                // Status icon
+                ratatui::text::Span::styled(
+                    format!("{} ", icon),
+                    Style::default().fg(status_color).bg(Theme::background()),
+                ),
+                // Service name
+                ratatui::text::Span::styled(
+                    format!("{:<18} ", short_name),
+                    Style::default()
+                        .fg(Theme::secondary_text())
+                        .bg(Theme::background()),
+                ),
+                // Status/latency text
+                ratatui::text::Span::styled(
+                    status_str,
+                    Style::default()
+                        .fg(Theme::secondary_text())
+                        .bg(Theme::background()),
+                ),
+            ]
+        }
     }
 
     /// Move selection up
@@ -282,9 +313,10 @@ impl Widget for ServicesWidget {
                 disk_gb: Some(service.disk_gb),
                 metrics: Vec::new(), // Parent services don't have custom metrics
                 widget_status: service.service_status,
+                service_type: String::new(), // Parent services have no type
             };
             self.parent_services.insert(service.name.clone(), parent_info);
-            
+
             // Process sub-services if any
             if !service.sub_services.is_empty() {
                 let mut sub_list = Vec::new();
@@ -293,12 +325,13 @@ impl Widget for ServicesWidget {
                     let metrics: Vec<(String, f32, Option<String>)> = sub_service.metrics.iter()
                         .map(|m| (m.label.clone(), m.value, m.unit.clone()))
                         .collect();
-                    
+
                     let sub_info = ServiceInfo {
                         memory_mb: None, // Not used for sub-services
                         disk_gb: None,   // Not used for sub-services
                         metrics,
                         widget_status: sub_service.service_status,
+                        service_type: sub_service.service_type.clone(),
                     };
                     sub_list.push((sub_service.name.clone(), sub_info));
                 }
@@ -342,6 +375,7 @@ impl ServicesWidget {
                                     disk_gb: None,
                                     metrics: Vec::new(),
                                     widget_status: Status::Unknown,
+                                    service_type: String::new(),
                                 });
 
                         if metric.name.ends_with("_status") {
@@ -377,6 +411,7 @@ impl ServicesWidget {
                                     disk_gb: None,
                                     metrics: Vec::new(),
                                     widget_status: Status::Unknown,
+                                    service_type: String::new(), // Unknown type in legacy path
                                 },
                             ));
                             &mut sub_service_list.last_mut().unwrap().1

shared/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard-shared"
-version = "0.1.189"
+version = "0.1.196"
 edition = "2021"
 
 [dependencies]

shared/src/agent_data.rs

@@ -149,6 +149,9 @@ pub struct SubServiceData {
     pub name: String,
     pub service_status: Status,
     pub metrics: Vec<SubServiceMetric>,
+    /// Type of sub-service: "nginx_site", "container", "image"
+    #[serde(default)]
+    pub service_type: String,
 }
 
 /// Individual metric for a sub-service