## What changed
- Derive sampling diagnostic and rollout trace labels directly from permission profiles instead of constructing legacy sandbox policies. Rename the trace metadata field from `sandbox_policy` to `permissions_profile`.
- Extract `with_workspace_write_cwd` to share default workspace metadata protections between legacy policy conversion and the TUI's sandbox-mode compatibility check. Build the check's workspace-write profile from filesystem and network permissions directly.
## Testing
Add a regression test confirming that the sandbox-mode compatibility check accepts standard workspace metadata protections and rejects a profile with an additional writable `.git` root.
GitOrigin-RevId: f20d23afd80dff6347865df3d6a94d6f5e90e1e0