Integrate native Rime and stabilize input, output, and rendering

- Add optional modifier-only Super binding whose tap is cancelled by
  other input, focus changes, grabs, locks, and session teardown.
- Ship the native ferese-rime user service, Rime defaults, installer
  inventory, package dependencies, session environment, and docs.
- Vendor Smithay 8a27023 with the SHM texture-cache format fix and add
  GPU regressions for format changes and resize snapshots.
- Release reused CRTC owners before staging output modes, then restore
  changed outputs before former owners when a transaction fails.
- Wait for resize-capture GPU completion, expand filtered surface
  damage, and preserve IME popup origin under fractional scaling.
- Mark weekends like holidays in both calendar layouts.

compositor/src/xwayland/integration_tests.rs

@@ -1778,7 +1778,7 @@ mod manager_loop {
         state
             .reload_config_source(
                 "xwayland { enabled #true; startup \"on-demand\"; path \"".to_owned()
-                    + &wrapper(&directory, &[]).display().to_string()
+                    + wrapper(&directory, &[]).display().to_string().as_str()
                     + "\"; }",
             )
             .expect("the reload must be accepted");