Fix profile language picker

Fix logout, OAuth state cleanup, HF_TOKEN diagnostic

Fix inference auth and app branding

feat(phrases): progress bar while generating + bigger kanji/related text + brutalist TTS

Deploy: PraxaLing rename + HF Docker Space

fix: camera marker focus + black gap below content; pin Novita provider

refactor: split practice + phrases clients, share JSON repair

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

feat: rebrand to DialogueDock, update hero video and button hover styles

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