Merge branch 'main' into dev

Surgical merge of 74 commits from main into dev. Key features ported:

- Provider visibility gating (appVersion filtering for Pi/Copilot)
- Pi agent provider + Copilot re-enabled
- Provider-declared features system (Codex fast mode)
- Workspace dedup by worktree root (adapted to integer IDs)
- Bulk close archiving fix for stored agents
- Agent creation timeout increase to 60s
- Audio/voice crash fixes (external buffer copies)
- Multi-host setup fix
- Reload agent tab action

Dev architecture preserved: SQLite storage, service proxy,
workspace setup dialog, hover cards, removed launcher tabs.

packages/server/src/shared/tool-call-display.test.ts

@@ -141,4 +141,20 @@ describe("shared tool-call display mapping", () => {
       summary: "npm run test",
     });
   });
+
+  it("labels plan detail rows as Plan", () => {
+    const display = buildToolCallDisplayModel({
+      name: "plan",
+      status: "completed",
+      error: null,
+      detail: {
+        type: "plan",
+        text: "### Login Screen\n- Build layout",
+      },
+    });
+
+    expect(display).toEqual({
+      displayName: "Plan",
+    });
+  });
 });