docs: codify audit rules in CLAUDE.md + README + audit records

CLAUDE.md: new "2026-06-09 audit" enforced-rules section (mandatory coercion
helpers, deterministic id-tiebreak ordering, $queryRaw FOR-UPDATE locking
discipline, uniqueness-in-transaction, guard reads, Rules-of-Hooks, seed prod
guard), lint/typecheck/format commands, and the app_test/.env.test testing
section with the hard-throw guard.

README rewritten from the placeholder stub (setup/run/build/test/gates/migrations).

REVIEW.md / REVIEW_FINDINGS.md / REVIEW_FIXES.md: the full audit record — 277
files reviewed, ~362 findings, every one fixed and verified.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

README.md

@@ -0,0 +1,73 @@
+# boha-app-ts
+
+Internal business-management system for a Czech company (attendance, invoicing,
+leave/trips, projects, vehicles, warehouse, HR) — a TypeScript/Node.js rewrite
+of the legacy PHP app. User-facing text is Czech by design.
+
+> For full architecture, conventions, and gotchas, see **[CLAUDE.md](./CLAUDE.md)**.
+
+## Stack
+
+- **Backend:** Fastify 5 · Prisma 6 → MySQL · Zod 4 · JWT (HS256) + TOTP 2FA
+- **Frontend:** React 18 · Vite · Material UI v7 (Emotion) · TanStack Query — an
+  SPA in `src/admin/`, served by the same Fastify process (Vite middleware in
+  dev, static files in prod)
+- **Other:** Puppeteer (PDF) · nodemailer · node-cron · `@anthropic-ai/sdk` (the
+  admins-only "Odin" assistant)
+
+## Prerequisites
+
+- Node.js (LTS) and a MySQL database
+- Copy `.env.example` → `.env` and fill in the **required** vars (`DATABASE_URL`,
+  `JWT_SECRET`, `TOTP_ENCRYPTION_KEY` — generate the keys with `openssl rand -hex 32`)
+
+## Setup
+
+```bash
+npm install
+npx prisma generate
+npx prisma migrate dev      # apply migrations to your dev DB
+npx prisma db seed          # optional: dev-only sample data (NEVER on prod)
+```
+
+## Develop
+
+```bash
+npm run dev:server   # API (tsx watch) on http://127.0.0.1:3050
+npm run dev:client   # Vite dev server (manage separately)
+```
+
+## Build & run
+
+```bash
+npm run build        # tsc server → dist/  +  vite client → dist-client/
+npm start            # node dist/server.js
+```
+
+## Test
+
+```bash
+npm test             # vitest run — hits a real test DB (.env.test); no Prisma mocks
+```
+
+## Quality gates
+
+Before committing, all of these must pass:
+
+```bash
+npx tsc -b --noEmit  # typecheck (NOT `tsc -p tsconfig.json`)
+npm run build
+npx vitest run
+npm run lint         # ESLint (incl. react-hooks) — see eslint.config.js
+```
+
+## Database migrations
+
+Every schema/data change is a tracked Prisma migration — **never** `prisma db push`
+or raw SQL on production. Stop the dev server before running `prisma migrate dev`.
+See CLAUDE.md → _Database Migrations_ for the full workflow and the production
+deploy/hotfix process.
+
+## License
+
+ISC