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.

crates/jarvis-core/src/config.rs

@@ -220,7 +220,6 @@ pub const LLM_FALLBACK_ERROR_RU: &str = "Не могу связаться с с
 pub fn get_llm_trigger_phrases(lang: &str) -> &'static [&'static str] {
     match lang {
         "ru" => &["скажи", "ответь", "произнеси"],
-        "ua" => &["скажи", "відповідай"],
         "en" => &["say", "tell", "answer"],
         _ => &[],
     }
@@ -228,7 +227,7 @@ pub fn get_llm_trigger_phrases(lang: &str) -> &'static [&'static str] {
 
 pub fn get_llm_system_prompt(lang: &str) -> &'static str {
     match lang {
-        "ru" | "ua" => LLM_SYSTEM_PROMPT_RU,
+        "ru" => LLM_SYSTEM_PROMPT_RU,
         _ => LLM_SYSTEM_PROMPT_RU,
     }
 }
@@ -259,7 +258,6 @@ pub fn get_llm_system_prompt(lang: &str) -> &'static str {
 pub fn get_wake_phrases(lang: &str) -> &'static [&'static str] {
     match lang {
         "ru" => &["джарвис", "джервис", "гарвис", "джарви", "гарви"],
-        "ua" => &["джарвіс", "джервіс"],
         "en" => &["jarvis", "jervis"],
         _ => &["jarvis"],
     }
@@ -273,11 +271,6 @@ pub fn get_phrases_to_remove(lang: &str) -> &'static [&'static str] {
             "произнеси", "ответь", "покажи", "скажи", "давай",
             "да сэр", "к вашим услугам сэр", "загружаю сэр",
         ],
-        "ua" => &[
-            "джарвіс", "джервіс", "сер", "слухаю сер", "завжди до послуг",
-            "скажи", "покажи", "відповідай", "давай",
-            "так сер", "до ваших послуг сер",
-        ],
         "en" => &[
             "jarvis", "jervis", "sir", "yes sir", "at your service",
             "please", "say", "show", "tell", "hey",
@@ -292,10 +285,6 @@ pub fn get_wake_grammar(lang: &str) -> &'static [&'static str] {
             "джарвис", "[unk]", "джон", "джони", "джей",
             "джонстон", "привет", "давай",
         ],
-        "ua" => &[
-            "джарвіс", "[unk]", "джон", "джоні", "джей",
-            "привіт", "давай",
-        ],
         "en" => &[
             "jarvis", "[unk]", "john", "johnny", "jay",
             "hello", "hey", "hi",