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/wlcs_anvil/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "wlcs_anvil"
+version = "0.0.1"
+authors = ["Victor Berger <[email protected]>", "Drakulix (Victoria Brekenfeld)"]
+license = "MIT"
+publish = false
+edition = "2024"
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+smithay = { path = "..", default-features=false, features=["wayland_frontend", "backend_egl", "use_system_lib", "renderer_test"] }
+anvil = { path = "../anvil", default-features=false }
+wayland-sys = { version = "0.31.1", features = ["client", "server"] }
+wlcs = "0.1"