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petal/BUILD_PLAN.md

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# Petal — Build Plan & Progress
Multi-session build. **Source of truth for what's done and what's next.** Update the checkboxes as work completes. `petal-spec.md` is the design spec; this file tracks execution.
## Decisions locked in (see also memory: petal-design-north-star)
- **Auth deferred** — no Authentik yet. Seed a single hardcoded local user (`id = "local"`); keep the `user_id` column so auth drops in later without a schema migration.
- **Copyleaks deferred** — needs a public webhook; skip Tier-2 plagiarism until there's a public endpoint. Tier-1 voice-consistency (local) is in scope.
- **Traefik/deploy deferred** — local dev first.
- **LLM**: Qwen 3.5 (256K context) on 64GB dual-GPU. Grammar checkpoint cap ~10K tokens (latency guard); voice pass sends whole document.
- **Suggestion anchoring**: resolve by `original` string in ProseMirror coords at render time; stored `from_pos`/`to_pos` are plaintext offsets for server-side use only. (Spec Note #6.)
- **Aesthetic is an acceptance criterion**: pretty, warm, Chinese-woman-friendly; CJK fonts first-class.
## Phases
### Phase 0 — Foundation / scaffold ✅
- [x] `git init`, `.gitignore`, remote → gitea.parodia.dev/drwily/petal
- [x] Go module (`go.mod`), directory skeleton per spec
- [x] `internal/config` env loading (local-dev defaults; auth/copyleaks fields kept for later)
- [x] Vite + React 19 + TS + Tailwind v4 scaffold in `web/` (design tokens in `@theme`, Google fonts)
- [x] Frontend embedded via `web/embed.go` (`go:embed all:dist`) + SPA handler in `cmd/server/main.go`
- [x] Dev workflow documented in README; `.env.example` added
- [x] Verified end-to-end: binary serves `/api/health` + embedded SPA + SPA fallback
### Phase 1 — Data layer ✅
- [x] SQLite (modernc) init + migrations (`internal/db/db.go`) — versioned `schema_migrations` runner, WAL + foreign keys, single writer conn
- [x] Models: User, Document, Suggestion (`internal/db/models.go`) — + type/status constants
- [x] Seed hardcoded `local` user (idempotent on startup)
- [x] Schema includes `voice` in suggestions type CHECK (full spec schema incl. plagiarism_reports, to avoid a later migration)
- [x] `db.Open` wired into `cmd/server/main.go`; `db_test.go` covers migrate/seed idempotency, CHECK constraint, FK cascade
### Phase 2 — Document CRUD + auto-save ← first "it works" milestone
- [ ] Doc handlers: list/create/get/update/delete (`internal/docs/handlers.go`)
- [ ] Frontend DocList sidebar (create/rename/delete)
- [ ] Tiptap EditorCore (StarterKit, Underline, TextAlign, Placeholder, CharacterCount)
- [ ] `useAutoSave` (1.5s debounce) → PUT /api/docs/:id
- [ ] StatusBar: word count + save status
- [ ] Keep `content` (Tiptap JSON) and `content_text` (plain) in sync on save
### Phase 3 — LLM grammar checkpoint
- [ ] `LLMClient` interface + factory (`internal/llm/client.go`)
- [ ] `vllm.go` (OpenAI-compat), `ollama.go` (native) — both behind interface
- [ ] `checkpoint.go` (30s/doc rate limit), `prompts.go`
- [ ] `POST /api/docs/:id/check`
- [ ] `useCheckpoint` (4s debounce) + checkpoint indicator
- [ ] SuggestionMark + SuggestionCard (accept/dismiss); **string-anchoring**, not stored pos
- [ ] Suggestion colors: grammar=mint, phrasing=peach, idiom=lavender, clarity=sky
### Phase 4 — Ask Petal (conversational follow-up)
- [ ] `POST /api/suggestions/:id/chat` SSE streaming; server-side context injection
- [ ] AskPetal component, token-by-token render, no persistence
- [ ] CJK font fallbacks on chat bubbles (spec Note #17)
### Phase 5 — Voice consistency pass (Tier 1)
- [ ] `POST /api/docs/:id/voice`, whole-document, slow cadence / explicit action
- [ ] `voice` suggestion type, honey decoration (`--color-honey`)
### Phase 6 — Design system & polish
- [ ] Full pastel tokens, Nunito + Lora + JetBrains Mono
- [ ] Shape language, shadows, transitions
- [ ] Signature animations (suggestion fade-float, accept confetti, breathing checkpoint dot)
- [ ] Distraction-free mode
### Phase 7 — Spell check
- [ ] nspell browser-side (en-US), vendor dictionaries
### Deferred (post-v1-local)
- [ ] Authentik OIDC auth + session middleware
- [ ] Copyleaks Tier-2 + webhook HMAC
- [ ] Dockerfile, docker-compose, Traefik, deploy to write.parodia.dev
## Session log
- 2026-06-25: Spec reviewed & amended (voice/grammar decoupled, ctx cap, routes, voice DB type, honey color, string-anchoring). Build plan created.
- 2026-06-25: **Phase 0 complete.** Go module + chi server, config loader, React/Vite/Tailwind-v4 scaffold with full design tokens, frontend embedded & served by the binary, verified end-to-end. Toolchain: Go 1.24.4, Node 22, npm 10. Next: **Phase 1 (data layer)** — SQLite via modernc, models, seed `local` user.
- 2026-06-25: **Phase 1 complete.** `internal/db` package: modernc.org/sqlite (pulled go toolchain → 1.25), `Open()` does mkdir + WAL/foreign-keys DSN + versioned migration runner + idempotent local-user seed. Models with type/status constants. Wired into `main.go`; tests pass (migrate/seed idempotency, CHECK reject, FK cascade). Verified server boots and writes `petal.db`. Next: **Phase 2 (document CRUD + auto-save)** — first "it works" milestone.