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/handlers/virtual_keyboard.rs

@@ -19,6 +19,7 @@ impl VirtualKeyboardHandler for Ferese {
                 _ => None,
             };
             if let Some(device) = device {
+                self.super_tap.cancel();
                 keyboard.release_source(self, device.source());
             }
             return;
@@ -78,7 +79,10 @@ impl VirtualKeyboardHandler for Ferese {
                     context.set_modifier_mask(mods_depressed, mods_latched, mods_locked, group)
                 });
             }
-            InputEvent::DeviceRemoved { device } => keyboard.release_source(self, device.source()),
+            InputEvent::DeviceRemoved { device } => {
+                self.super_tap.cancel();
+                keyboard.release_source(self, device.source());
+            }
             _ => (),
         }
     }