Add desktop queue visibility sidecar and task-origin metadata

desktop-sidecar/README.md

@@ -2,11 +2,15 @@
 
 Minimal Compose Multiplatform desktop app for watching the local `agent-task-queue` database in real time.
 
-The sidecar reads the existing SQLite queue DB directly and shows:
+The sidecar reads the existing SQLite queue DB directly and also inspects live task queue
+server args plus `adb devices -l` when available. It shows:
 
 - running tasks
 - waiting tasks
 - exact queues grouped by root scope so hierarchical queue activity is easier to understand
+- configured `--queue-capacity` scopes, including empty queues and slot counts
+- agent/context identity for live servers and tasks when queue metadata is available, with process inspection as a fallback
+- connected ADB devices so emulator queue plans can be compared with reality
 
 It is intentionally read-only. There is no new MCP protocol or server surface.
 
@@ -33,4 +37,4 @@ Use a specific queue directory with:
 ## Notes
 
 - `./gradlew` in this directory delegates to the checked-in Gradle wrapper under `../intellij-plugin/` so the sidecar stays lightweight.
-- Queue capacities configured with `--queue-capacity` are process-local and are not persisted in `queue.db`, so the app visualizes live tasks and queue layout rather than stored capacity numbers.
+- Queue capacities configured with `--queue-capacity` are still process-local and are not persisted in `queue.db`; the app surfaces them by reading the args of live task queue server processes for the selected data dir.

desktop-sidecar/build.gradle.kts

@@ -20,6 +20,7 @@ kotlin {
                 implementation(compose.foundation)
                 implementation(compose.material3)
                 implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.10.2")
+                implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.7.3")
                 implementation("org.xerial:sqlite-jdbc:3.53.0.0")
             }
         }