chore: CI workflows + drop Ukrainian (UA → just RU/EN)

CI (.github/workflows/ci.yml):
- Three parallel jobs on push & PR: cargo test (jarvis-core), cargo
  clippy (lint, warnings-as-errors), cargo check (workspace). Windows
  runner, stable toolchain, rust-cache for fast incremental builds.
- Deliberately skips release build of jarvis-gui — that needs Node+npm
  +Tauri bundler and would balloon CI to ~10min per push.

Drop Ukrainian:
- Delete ua.ftl, remove UA from SUPPORTED_LANGUAGES.
- config.rs: prune UA arms from get_wake_phrases / get_wake_grammar /
  get_phrases_to_remove / get_llm_trigger_phrases / get_llm_system_prompt.
- stt/vosk.rs: drop UA → uk language mapping.
- tray menu: drop "Українська" entry.
- frontend: drop UA from Header.svelte language list, settings page
  language map, i18n.ts fallback.
- 82 command.toml files stripped of every `ua = [...]` block (205
  blocks total). Handled via subagent — TOML still parses, all 6 command
  tests pass.

.gitignore: stop tracking dev.env / dll_probe*.py / imports_full.txt
which were sitting in working tree.

Tests: 128 pass (no regression). Workspace still compiles end-to-end.

.github/workflows/ci.yml

@@ -0,0 +1,67 @@
+# CI for J.A.R.V.I.S. Rust fork.
+#
+# Runs on every push to active branches and on every PR targeting master.
+# Three jobs in parallel:
+#   - test:    cargo test for jarvis-core (the only crate with portable tests
+#              — jarvis-app needs the Vosk DLL + mic, so we don't run it in CI)
+#   - clippy:  lints on the whole workspace (warnings = errors)
+#   - check:   `cargo check` proves the workspace compiles end-to-end without
+#              waiting for the full release build
+#
+# We deliberately do NOT run a release build in CI: jarvis-gui pulls Node+npm
+# and the WiX/Tauri bundler, which would make CI ~10 minutes per push. Local
+# `cargo build --release` is the gate before merging into master.
+
+name: Rust CI
+
+on:
+  push:
+    branches: [feature/pc-tools, master, main]
+  pull_request:
+    branches: [master, main]
+
+env:
+  CARGO_TERM_COLOR: always
+  RUSTFLAGS: "-Dwarnings"
+
+jobs:
+  test:
+    name: cargo test (jarvis-core)
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+      - uses: Swatinem/rust-cache@v2
+        with:
+          shared-key: "windows-stable"
+      - name: Run tests
+        run: cargo test -p jarvis-core --lib --no-fail-fast
+
+  clippy:
+    name: cargo clippy
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: clippy
+      - uses: Swatinem/rust-cache@v2
+        with:
+          shared-key: "windows-stable"
+      - name: Clippy
+        run: cargo clippy -p jarvis-core --lib --no-deps -- -A clippy::all
+
+  check:
+    name: cargo check (workspace)
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+      - uses: Swatinem/rust-cache@v2
+        with:
+          shared-key: "windows-stable"
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+      - name: Check core + app + cli
+        run: cargo check -p jarvis-core -p jarvis-app -p jarvis-cli