merge: resolve conflicts with develop (M10-Telemetry + M12-MatrixBridge)

Merge origin/develop into feature/m13-speech-services to incorporate
M10-Telemetry and M12-MatrixBridge changes. Resolved 4 conflicts:
- .env.example: Added speech config alongside telemetry + matrix config
- Makefile: Added speech targets alongside matrix targets
- app.module.ts: Import both MosaicTelemetryModule and SpeechModule
- docs/tasks.md: Combined all milestone task tracking sections

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/web/src/components/layout/Navigation.tsx

@@ -16,6 +16,7 @@ export function Navigation(): React.JSX.Element {
     { href: "/tasks", label: "Tasks" },
     { href: "/calendar", label: "Calendar" },
     { href: "/knowledge", label: "Knowledge" },
+    { href: "/usage", label: "Usage" },
   ];
 
   // Global keyboard shortcut for search (Cmd+K or Ctrl+K)