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.

resources/commands/scheduler/command.toml

@@ -14,7 +14,6 @@ ru = [
     "разбуди через",
 ]
 en = ["remind me in", "set a reminder in"]
-ua = ["нагадай через", "постав нагадування через"]
 
 
 [[commands]]
@@ -32,7 +31,6 @@ ru = [
     "поставь напоминалку на",
 ]
 en = ["remind me at", "wake me at"]
-ua = ["нагадай о", "розбуди о"]
 
 
 [[commands]]
@@ -51,7 +49,6 @@ ru = [
     "напоминай каждый",
 ]
 en = ["every", "remind me every"]
-ua = ["кожні", "нагадуй кожні"]
 
 
 [[commands]]
@@ -69,7 +66,6 @@ ru = [
     "по утрам в",
 ]
 en = ["every day at", "daily at"]
-ua = ["щодня о", "кожен день о"]
 
 
 [[commands]]
@@ -88,7 +84,6 @@ ru = [
     "что в расписании",
 ]
 en = ["what's on my schedule", "show schedule", "list reminders"]
-ua = ["що в розкладі", "покажи розклад"]
 
 
 [[commands]]
@@ -106,7 +101,6 @@ ru = [
     "сбрось расписание",
 ]
 en = ["clear schedule", "cancel all reminders"]
-ua = ["очисти розклад", "скасуй всі нагадування"]
 
 
 [[commands]]
@@ -129,6 +123,3 @@ en = [
     "cancel reminder about",
     "remove task about",
 ]
-ua = [
-    "скасуй нагадування про",
-]