Phase 2 + HUD: real-time MT, settings UI, chat, scoreboard/tab/bossbar

[Somikyy]

What

Two commits: Phase 2 (real-time online translation, chat, settings UI) and the follow-up HUD/polish pass from live Hypixel testing.

Phase 2 — real-time MT, chat, YACL UI

• Real-time online translation: unknown strings go through Google's free endpoint (or your own LibreTranslate) via a polite queue — dedup, 350ms spacing, persistent daily budget, back-off on errors. Results are placeholder-validated, cached forever, and the render memo is flushed so tooltips update live while you look at them.
• Chat: server system messages (NPC dialogues, quests) translated by default; player chat is a separate opt-in. Clickable/hoverable messages are skipped to keep interactions working.
• Colored arguments: §7Damage: §c+1,024 → template "Damage: {0}", the value keeps its sign and color, surrounding color restored after it.
• Settings UI (YACL, bundled jar-in-jar; Mod Menu button + O key): master toggle, language dropdown, per-surface toggles, MT provider/budget, and a string editor — the 50 last-seen strings editable in game; edits become top-priority overrides.

HUD pass — fixes from in-game feedback

• §k garble fixed: lines with obfuscated decorations are translated per segment; the §k runes and the full §-code structure stay exactly where they were (rarity lines now render correctly).
• New surfaces: scoreboard sidebar, tab list (entries/header/footer), boss bar — each with its own toggle.
• MT hygiene: tab entries never reach an online translator (player names!), and MT is only attempted for multi-word phrases.

Testing

• Unit tests: Normalizer v2 (colored/signed args), legacy segment splitting round-trip — green
• Live on Hypixel SkyBlock: tooltips translate in real time, YACL screen works (verified in session logs), item translation confirmed by screenshots
• New HUD mixins verified against 26.2 bytecode (Hud.displayScoreboardSidebar, BossHealthOverlay.extractRenderState, PlayerTabOverlay)

Reviewer notes

• Dictionary key format changed: sign lives in the argument now ("Damage: {0}")
• 26.2: Minecraft has no current-screen getter; keybind opens config via setScreenAndShow(…, null parent)
• Free MT quality is the free tier by design — overrides/string editor are the correction path, premium LLM backend (Phase 3) is the real fix

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