## What changed
- Add `tui.keymap.global.open_agents`, defaulting to `alt-a`, to open the shared agents overview.
- Add an `agents` keymap context for search, new task, rename, stop, and grouping actions.
- Expose the new actions in the keymap picker and render dashboard hints from the resolved bindings.
- Preserve existing custom `alt-a` bindings by disabling the new default when it would conflict.
## Testing
- Cover remapping, reserved keys, conflicts, and compatibility with existing bindings.
- Verify that configured dashboard shortcuts act on the selected filtered task.
GitOrigin-RevId: 98c48a332e06cb96dbf0e59647ce7959d45b9988