Merge branch 'main' into dev

Resolve 38 conflicts preserving both sides' work:
- Server: DB-based registries (dev) + WorkspaceGitService/DaemonConfigStore (main)
- App: script proxy/voice MCP (dev) + pin/hide tabs/bootstrap boundary (main)
- Shared: WorkspaceScriptPayload (dev) + git/GitHub runtime schemas (main)
- Deleted workspace-registry-bootstrap.ts (dev's DB approach supersedes)

packages/app/src/utils/workspace-execution.test.ts

@@ -21,7 +21,6 @@ function createWorkspace(
     workspaceKind: input.workspaceKind ?? "checkout",
     name: input.name ?? "main",
     status: input.status ?? "running",
-    activityAt: input.activityAt ?? null,
     diffStat: input.diffStat ?? null,
     scripts: input.scripts ?? [],
   };