bead: spaxel-dz5s - proactive quality prompts already implemented

The proactive quality prompt system for link degradation warnings is already fully implemented:

- dashboard/js/proactive.js: monitorLinkQuality() tracks links with quality < 0.6
  - 5-minute sustained drop threshold (DURATION_MS = 5 * 60 * 1000)
  - Non-blocking dismissible prompt card with 'Diagnose' and 'Dismiss for today' buttons
  - Pulsing amber highlight (0xff9800) on 3D link lines via startLinkPulsing()
  - diagnoseLink() fetches from /api/diagnostics/link/{linkID}
  - Dismissed prompts tracked in localStorage, cleared on recovery

- mothership/internal/diagnostics/linkweather.go: GetDiagnosticFor() method
  - Returns Diagnosis with Title, Detail, Advice, Severity, ConfidenceScore
  - Root cause analysis for environmental changes, WiFi congestion, metal interference, Fresnel blockage, periodic interference

- mothership/cmd/mothership/main.go: API endpoint /api/diagnostics/link/{linkID}
  - Handles optional timestamp parameter
  - Returns diagnosis with repositioning suggestions if applicable

All acceptance criteria met:
- Prompt appears within 5 minutes of sustained drop ✓
- No prompt for transient drops (< 5 min) ✓
- Diagnose button shows root cause ✓
- Dismissed prompts don't re-appear unless condition reoccurs after recovery ✓
- Pulsing amber highlight on 3D link line ✓

.beads/traces/spaxel-6ha/metadata.json

@@ -5,11 +5,11 @@
   "model": "claude-sonnet-4-6",
   "exit_code": 0,
   "outcome": "success",
-  "duration_ms": 14841,
+  "duration_ms": 436868,
   "input_tokens": null,
   "output_tokens": null,
   "cost_usd": null,
-  "captured_at": "2026-05-04T03:32:53.834616995Z",
+  "captured_at": "2026-05-04T03:54:29.391984490Z",
   "trace_format": "claude_json",
   "pruned": false,
   "template_version": null

.beads/traces/spaxel-qlh/metadata.json

@@ -0,0 +1,16 @@
+{
+  "bead_id": "spaxel-qlh",
+  "agent": "claude-code-glm-4.7",
+  "provider": "zai",
+  "model": "glm-4.7",
+  "exit_code": 0,
+  "outcome": "success",
+  "duration_ms": 211763,
+  "input_tokens": null,
+  "output_tokens": null,
+  "cost_usd": null,
+  "captured_at": "2026-05-04T03:25:13.312108065Z",
+  "trace_format": "claude_json",
+  "pruned": false,
+  "template_version": null
+}

.beads/traces/spaxel-v5p2/metadata.json

@@ -0,0 +1,16 @@
+{
+  "bead_id": "spaxel-v5p2",
+  "agent": "claude-code-glm-4.7",
+  "provider": "zai",
+  "model": "glm-4.7",
+  "exit_code": 0,
+  "outcome": "success",
+  "duration_ms": 360058,
+  "input_tokens": null,
+  "output_tokens": null,
+  "cost_usd": null,
+  "captured_at": "2026-05-04T04:07:30.533539241Z",
+  "trace_format": "claude_json",
+  "pruned": false,
+  "template_version": null
+}

.needle-predispatch-sha

@@ -1 +1 @@
-e7605d8e45873dd2063addf459b7a53aa2e5e65a
+78884f1fd1e717f871bc5a3868c74572a9fe74fe

mothership/internal/eventbus/eventbus.go

@@ -84,6 +84,7 @@ func SubscribeDefault(fn Subscriber) {
 type Bus struct {
 	mu          sync.RWMutex
 	subscribers []Subscriber
+	inFlight    sync.WaitGroup
 }
 
 // New creates a new event bus.