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.

shell/ferese-shell/Cargo.toml

@@ -24,6 +24,10 @@ jiff.workspace = true
 libc.workspace = true
 # Prefer GPU rendering, retaining software rendering as a fallback/override.
 libcosmic = { workspace = true, features = ["wgpu", "a11y"] }
+# The pinned Wayland backend gates text-input-v3 event dispatch on this empty
+# feature. Enable it directly without changing the shell's ordinary app::run or
+# pulling libcosmic's unrelated single-instance/D-Bus application support.
+iced_winit = { git = "https://github.com/ferese-wm/libcosmic", tag = "ferese-v0.1.3-rc.3", default-features = false, features = ["single-instance"] }
 freedesktop-desktop-entry = { version = "0.8.3", default-features = false }
 iced_accessibility.workspace = true
 serde.workspace = true