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.

vendor/smithay/clippy.toml

@@ -0,0 +1,9 @@
+msrv = "1.87"
+type-complexity-threshold = 400
+
+disallowed-macros = [
+    { path = "std::print", reason = "We use tracing for logging" },
+    { path = "std::println", reason = "We use tracing for logging" },
+    { path = "std::eprint", reason = "We use tracing for logging" },
+    { path = "std::eprintln", reason = "We use tracing for logging" },
+]