README: add Field Notes blog link (achievement:fieldnotes)

README: add demo video (YouTube) + social post (X) links

Revert to track:backyard (study tutor = Backyard archetype)

Switch to track:wood (Thousand Token Wood) + retune framing

Tour: compact uniform tiles, centered content (fix layout)

Tour: gestures tile + merged tile; fix card spacing/highlight

Pre-render ⓘ tour audio (FIXED_LINES + startup prefetch)

Add 'What makes Pip special' tour (info button on splash)

Sync modal_app.py: GGUF (MiniCPM5) served via llama.cpp

Ship 'Today I Learned' certificate + link traces dataset

Add Build Small submission tags + de-stale to fine-tuned MiniCPM5 brain

Redesign a11y pass: WCAG-safe button labels + chip/eyebrow/muted contrast + fuller reduced-motion + polish

Redesign: 'A Window of Wonders' — Fraunces/Nunito, dawn-to-dusk palette, Pip's twilight window, storybook cards

Fix autoplay state-machine bugs from review (stuck asking, paused-quiz audio, mic leak, token guard)

Auto-play lesson flow: hands-free auto-advance + tap-to-ask (silence detect) + Pause/Skip

Add 5 new kids lessons (butterfly, bees, five senses, shapes, magnets) + sticker names

Speed: frontend audio prefetch + in-memory buffer cache (instant per-line playback)

Speed: cache + pre-record lesson audio (instant playback) + optional KEEP_WARM

Engagement upgrade: alive Pip celebrations + Sticker Book + Web-Audio SFX (A·C·D)

Pre-warm Kokoro G2P pipeline in Modal container (kill first-call /speak spike)

Add Modal GPU inference app + MODAL_BASE_URL routing (slice 2)

Warm only voicing path at startup (don't pin CPU loading the brain)

Fix thread oversubscription on free CPU Space (cap to cgroup quota)

Pre-warm models at startup (kill first-call cold start) + thread-safe lazy loaders

Professor Pip — kids learning avatar (courses, make-your-own, safety gate, browser lesson engine)

initial commit