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/stores/session-store.test.ts

@@ -23,7 +23,6 @@ function createWorkspace(
     workspaceKind: input.workspaceKind ?? "local_checkout",
     name: input.name ?? "main",
     status: input.status ?? "done",
-    activityAt: input.activityAt ?? null,
     diffStat: input.diffStat ?? null,
     scripts: input.scripts ?? [],
   };
@@ -62,7 +61,6 @@ describe("normalizeWorkspaceDescriptor", () => {
       scripts,
     });
 
-    expect(workspace.activityAt).toBeNull();
     expect(workspace.scripts).toEqual([
       {
         scriptName: "web",