proof-of-work/AGENTS.md

# AGENTS.md — Proof of Work

Self-hosted multi-user workout logger (Next.js app) packaged as a StartOS 0.4 `s9pk`, published to a private Start9 registry.

## Stack (versions that matter)

- **Next.js 14** (App Router, server components + server actions, SSE streaming)
- **React 18**, **TypeScript 5**, **TailwindCSS 3**
- **Prisma 5** ORM over **SQLite** (WAL mode; tuned at boot)
- **bcrypt** (native — NOT bcryptjs), **zod 3** for validation
- **Vitest 4** for tests
- **@start9labs/start-sdk** for the 0.4 packaging layer
- Node **>= 20** to build

## Layout (two projects in one repo)

```
proof-of-work/            ← the Next.js app (THIS is where you run npm)
  app/                    ← App Router routes; app/api/** = route handlers
  app/main/               ← authed UI; navigation.tsx = sidebar
  components/             ← React components (workouts/, ai/, settings/)
  lib/ai/                 ← AI subsystem (see below)
  lib/ai/providers/       ← claude.ts openai.ts gemini.ts ollama.ts + index.ts (getProvider)
  prisma/schema.prisma    ← schema (mirror; real DB migrates via entrypoint ALTERs)
  prisma/*.seed.json      ← curated exercise library + AI templates (reconciled each boot)
  tests/                  ← Vitest specs (ai-*.test.ts, routes-*.test.ts, ...)
start9/0.4/               ← StartOS packaging wrapper
  docker_entrypoint.sh    ← boot: first-boot seed, additive ALTERs, library reconcile
  Makefile / s9pk.mk      ← s9pk build (ARCHES := x86)
  startos/versions/       ← one file per ExVer version + index.ts (the version graph)
~/.proof-of-work/         ← publish.sh + unpublish.sh (NOT in repo; self-hosted registry)
```

`workout-planner/` is scratch (only `logs/`) — ignore. `start9/0.4/*.s9pk` are build artifacts.

## Commands

Run app commands **from `proof-of-work/`** (running tsc/vitest/next from repo root fails — wrong cwd):

```bash
cd proof-of-work
npm run dev            # local dev server
npm run build          # next build (run this to catch route/type errors before shipping)
npm run lint           # next lint
npm test               # vitest run (full suite)
npx vitest run tests/ai-pricing.test.ts      # single file
npx vitest run -t "findPrice"                # single test by name
npx tsc --noEmit       # typecheck only
npx prisma generate    # REQUIRED after editing schema.prisma (else TS can't see new fields)
```

Build/sideload the s9pk (from `start9/0.4/`): `make x86` then `make install`.
Publish to the registry: `~/.proof-of-work/publish.sh` (builds, uploads to FileBrowser, registers). Unpublish: `~/.proof-of-work/unpublish.sh`.

## Conventions

- **Versioning is ExVer**: `1.1.0:4` (note the colon). Every release = a new `start9/0.4/startos/versions/vMAJOR.MINOR.PATCH.N.ts` file, imported into `versions/index.ts` and promoted to `current` (previous `current` moves into `other[]`).
- **Bump the version BEFORE building the s9pk** — Start9 0.4 won't recognize a rebuild as an update otherwise.
- **Schema changes are additive ALTERs in `docker_entrypoint.sh`**, guarded by `PRAGMA table_info` checks. Keep `schema.prisma` in sync as the mirror, but the entrypoint is what migrates live `/data`. Never write a destructive migration.
- **Commit subject** = `vX.Y.Z:N — short summary`, imperative, body explains the *why*.
- **Git remote is self-hosted** (a private Start9 registry + a FileBrowser artifact host), NOT GitHub. The actual registry/file-host URLs are constants in `~/.proof-of-work/{publish,unpublish}.sh`; FileBrowser creds live in `~/.keysat/filebrowser.env` (outside the repo, gitignored). Default branch is `master`.
- AI provider abstraction: each provider yields an async iterable of `GenerateChunk` (`text` / `usage` / `done` / `error`); add new ones under `lib/ai/providers/` and register in `index.ts`.
- Streaming AI uses SSE; partial JSON is recovered with `lib/ai/lenientJson.ts`.
- Tests live in `proof-of-work/tests/`; mock server-action deps with `vi.hoisted()` + `vi.mock`.
- Pricing/model menus live in `lib/ai/pricing.ts` (`PRICES`, `MODEL_MENU`) — keep them paired so every menu model has a price entry (there's a test enforcing this).

## Always

- Run `npx prisma generate` after any `schema.prisma` edit, then `npx tsc --noEmit`.
- Run `npm test` AND `npm run build` before shipping a version.
- Add the boot-time `ALTER TABLE` (with an existence guard) for any new column, in `docker_entrypoint.sh`.
- Treat API keys / secrets as plaintext in `/data` BY DESIGN (threat model: the operator owns `/data`). Reference env-var names (`DATABASE_URL`, etc.); never hardcode values.
- Keep migrations idempotent and additive; data already on a user's server must survive upgrades.
- Verify the published file actually changed (size / 404 / Last-Modified) after publish.sh.

## Never

- **Never add `Co-Authored-By` / "Generated with" trailers** to commits — the user authors commits solo. (This was done wrong in earlier commits; do not repeat.)
- **Never reintroduce nonce-based CSP** — it broke first paint. Use the static `'unsafe-inline'` CSP in `next.config.js`.
- **Never run app commands from the repo root** — always `cd proof-of-work` first.
- **Never export non-HTTP-method symbols from a `route.ts`** — Next.js rejects the build (helpers go in `lib/`, e.g. `lib/ai/activateConfig.ts`).
- **Never commit `app.db`, `*.bak`, or any user data** — they're gitignored; double-check `git status` before `git add`.
- **Never click Uninstall on a StartOS package during a data cutover** — it destroys the volume; use Stop.
- **Never assume GitHub** — don't add a GitHub remote or push there.

## AI subsystem cheat-sheet

- `generate/route.ts` kicks off a **detached background runner** (`generationRunner.ts`) and returns an id; the client attaches via SSE (`generations/[id]/stream`) and can also poll the row. Navigating away does NOT cancel generation.
- System prompt = `systemPromptBase.ts` (output contract: JSON-only, library `exerciseId`s only, suggested weights) + the template's coaching prompt + `PROGRAM_OUTPUT_SHAPE` + library + optional history block (`historyContext.ts`).
- Multi-config: `AIConfigProfile` rows per user; `UserPreferences.activeAIConfigId` points at the active one and is mirrored into the legacy `ai*` columns for back-compat.

## TODO (verify before relying on)

- Exact `make` target set beyond `x86` (Makefile sets `ARCHES := x86`; `make install` sideloads — confirm host config).
- Whether `npm run db:seed` is needed in any current workflow (entrypoint handles seeding on the server).

## Current state

Latest version is **1.1.0:7** (built locally, installed on the StartOS server). The registry is currently **empty** — all versions were unpublished; nothing is downloadable until `publish.sh` runs again.

Working: workout logging, programs (manual + AI), multi-user, curated library, full AI subsystem (5 providers, multi-config, background generation, history detail, cost/duration, Ollama auto-detect, infinite-scroll exercise history).

In progress: none — repo is at a clean checkpoint.

Decided but not implemented: tiered AI prompt formatting — JSON-Schema enforcement (Ollama `format` / OpenAI `response_format`), pipe-separated library, XML-tagged sections, Ollama-only few-shot. Targets local-model output quality; would ship as 1.1.0:8.

Known issues: earlier commits (`8f149d3`–`5b0535f`) carry `Co-Authored-By` trailers to scrub from history. publish.sh Step 3 (registry register) silently no-op'd on 1.1.0:6 and :7 — uploaded the file but didn't register; investigate before relying on those versions appearing in the registry.

Next steps:
1. Scrub `Co-Authored-By` trailers from history (filter-branch or rebase).
2. Re-publish current version once the Step-3 registry-register failure is diagnosed.
3. Implement the tiered AI prompt formatting (1.1.0:8).