Fix logout, OAuth state cleanup, HF_TOKEN diagnostic

Fix inference auth and app branding

fix(auth): keep HF OAuth inside the iframe + SameSite=None session cookie

Fix Hugging Face Space OAuth launch

fix(auth): derive HF OAuth redirect_uri from request origin

Deploy: PraxaLing rename + HF Docker Space

feat: phrases page, level picker, furigana, HF inference fix, more scenarios

feat: full redesign — dark cinematic UI, interactive dialogues, Gemma 4 31B vision