Show file destinations in TUI change approvals (#39285)

## What changed

- Show a description and the destination paths affected by each file-change approval.
- Include both source and target paths for moves, format cross-platform paths for display, and show `unavailable` when change details are missing.
- Recover file changes from buffered events and thread snapshots so live and replayed approvals retain their destination details.

## Testing

- Add coverage for active and replayed approvals, moved and cross-platform paths, and the missing-destination fallback.

GitOrigin-RevId: 24f90b313fd8643f90cbead1504c788b140d7fed

codex-rs/tui/src/bottom_pane/mod.rs

@@ -56,6 +56,7 @@ use std::time::Instant;
 
 mod action_required_title;
 mod app_link_view;
+mod apply_patch_header;
 mod approval_overlay;
 mod mcp_server_elicitation;
 mod multi_select_picker;