Show all Docker containers as sub-services with active/inactive status

Agent changes:
- Use docker ps -a to show ALL containers (running and stopped)
- Map container status: Up -> active, Exited/Created -> inactive, other -> failed
- Display Docker containers as sub-services under the docker service
- Each container shown with proper status indicator

Example display:
● docker                 active     139M     1MB
  ├─ ● docker_gitea      active
  ├─ ○ docker_old-app    inactive
  └─ ● docker_immich     active

Updated to version 0.1.173

Cargo.lock

@@ -279,7 +279,7 @@ checksum = "a1d728cc89cf3aee9ff92b05e62b19ee65a02b5702cff7d5a377e32c6ae29d8d"
 
 [[package]]
 name = "cm-dashboard"
-version = "0.1.172"
+version = "0.1.173"
 dependencies = [
  "anyhow",
  "chrono",
@@ -301,7 +301,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-agent"
-version = "0.1.172"
+version = "0.1.173"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -324,7 +324,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-shared"
-version = "0.1.172"
+version = "0.1.173"
 dependencies = [
  "chrono",
  "serde",