feat: drop bartowski Q4_K_M Gemma preset (duplicate of unsloth on ZeroGPU)

feat: swap bartowski Q4_0 → unsloth UD-Q4_K_XL, set as default

ui: split-view tab title → '개인정보 상담 AI'

feat: drop unused presets (qwen2.5-1.5b, qwen3-1.7b)

ui: hide '초기화' button from references panel header

ui: sort cards with explicit (근거N) chip to the top of references panel

ui: simplify references panel — drop 'adopted' tier, keep 'LLM 전달' + (근거N) chip

ui: drop model selector from split-view references panel (redundant w/ Open WebUI dropdown)

feat: add Gemma 4 E2B Q4_0 preset (Metal-friendly 4-bit variant)

feat: model preset selector (Gemma 4 + 4 Qwen variants)

Debug: console.log on parent message listener

Listen for kpaa-route postMessage from Open WebUI iframe -> auto clear refs

Auto-clear refs on new chat (no history + non-meta first user message)

Add /api/clear-references + 🔄 초기화 button on right pane

Rename model display: kpaa-privacy-ko -> 개인정보 미니 상담 AI

Use generator pattern (cross-process yield via spaces res_queue) — ZeroGPU forks process so streamer queue isn't shared

Force streamer.end() in finally — transformers 5.x doesn't always auto-call it

Initial backend code: src/kpaa, runtime data, requirements