feat(phase0+1): wire URL context to ContextualRightPanel

Phase 0:
- UnifiedShell: pass blockedOnly to SocialPage; wire TopBar with live counts
- thread-drawer: show real issue.status instead of hardcoded "In Progress"
- social-page: fix onJumpToActivity to open right panel (not dead ?view=activity)

Phase 1:
- contextual-right-panel: add taskId branch (ThreadDrawer embedded) and swarmId
  branch (MissionInspector via SwarmIdBranch inner component); ActivityPanel
  remains the no-selection fallback

All 207 tests pass; no new typecheck errors.
Closes beadboard-r1i (Phase 1: Contextual Right Panel)

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

.beads/metadata.json

@@ -1,4 +1,8 @@
 {
-  "database": "beads.db",
-  "jsonl_export": "issues.jsonl"
+  "database": "dolt",
+  "jsonl_export": "issues.jsonl",
+  "backend": "dolt",
+  "dolt_mode": "server",
+  "dolt_server_port": 3307,
+  "dolt_database": "beadboard"
 }