# HANDOFF.md — Session Handoff (OVERWRITE at the end of every phase or when context is getting long)

> **Read order for a new session:** `NOTES.md` → `STATUS.md` → this file → then work.
> If this file disagrees with the code, trust the code and fix this file.

## 1. Where we are
- **Last completed step:** 9.4 (Mobile-responsive pass) — TICKED in STATUS.md
- **Next step:** Phase 9 — 9.5 (Final full run of "Definition of playable" from NOTES.md §7)
- **Updated:** 2026-10-21
- **Was the last session cut off mid-task?** No

## 2. Verified state (run these first)
| Command | Expected |
|---|---|
| `npm install` | succeeds |
| `npm run migrate` | applies 001–006 / "nothing to do" |
| `npm test` | **175 passing, 0 failing** (85 unit + 90 integration) |
| `npm run seed:dev` | creates demo user "demo"/"demo123", hero "Aldric" (warrior), starter gear |

## 3. What exists now (files that matter)
- `public/game.html` — Dashboard with 3-col grid (stats | action | combat), mobile bottom nav (⚔️ Hunt / 🏕️ Trip / 🎒 Items), tabbed action area.
- `public/js/game.js` — hunt UI + inventory UI + expedition UI + mobile nav init (DOMContentLoaded); uses shared toast.js.
- `public/css/main.css` — All styles including 3-col desktop grid, mobile bottom nav (< 700px), stacked panels on mobile, spinner, toast, button loading states.
- `public/404.html` — Custom 404 error page.
- `public/500.html` — Custom 500 error page.
- `public/js/toast.js` — Shared toast notification system.
- `public/shop.html` / `public/js/shop.js` — Shop page (buy/sell).
- `public/login.html`, `public/register.html`, `public/create-hero.html` — Auth & hero creation.
- `public/profile.html` / `public/js/profile.js` — Public hero profile page.
- `public/js/auth.js` — Shared API wrapper + showError.
- `scripts/seed-dev.js` — Creates demo account + hero + starter gear.
- `src/app.js` — Express app with helmet, rate limiters, catch-all 404, 500 HTML serving.
- `src/services/*` — All game services.
- `src/routes/*` — All route handlers.
- `src/game/*` — Pure game logic.
- `tests/integration/*.test.js` — 90 integration tests.
- `tests/unit/*.test.js` — 85 unit tests.

## 4. Half-finished / fragile things
- No leaderboard UI yet (Phase 8 API done but no UI).
- HP never regenerates naturally; only level-up restores it.
- No restart-persistence test for sessions.
- `npm run seed` script in package.json points to nonexistent `scripts/seed.js`.
- Equipment bonuses not yet passed into combat (Issue #5 in STATUS.md).
- Starter gear documented but not auto-created on character creation.
- `GET /api/zones` documented in API.md but not implemented (Issue #2).
- Mobile nav uses emoji icons (⚔️ 🏕️ 🎒) — verify they render acceptably on all platforms.

## 5. Decisions & deviations from the docs
- D-004..D-007 in `docs/DECISIONS.md` (combat rounds, equipment counted once, session store, clock).
- **D-014:** Mobile bottom nav uses emoji icons (⚔️ Hunt / 🏕️ Trip / 🎒 Items) instead of full text labels to save horizontal space on narrow screens.
- **D-015:** Desktop tabs hidden via CSS (`display: none`) below 700px; mobile nav shown via CSS; JS `syncMobileNav()` keeps active state in sync.
- Zod query param parsing uses `zod.coerce.number()` because Express query params are strings.
- Inventory response uses `itemId` (item.id) and `inventoryId` (inventory row id) to avoid confusion.
- Consumable effect parsing: regex `^(heal|energy):(\d+)$` on items.effect field.
- Qty decrement avoids CHECK constraint violation: delete directly when qty==1, decrement when qty>1.
- D-008..D-013 from previous steps.

## 6. Gotchas learned
- `npm test` must be `node --test` with NO path/glob; files must be named `*.test.js`.
- better-sqlite3-session-store ignores `expired.clear: false`; that's why the timer is unref'd.
- Statement caches are per-DB-handle (WeakMap) in huntService; copy that pattern for new services.
- Verify test COUNT, not just "all passing".
- Node.js `fetch` doesn't persist cookies across calls — extract `Set-Cookie` header and pass manually in integration tests.
- SQL `SELECT id` from inventory returns the auto-increment row id; rename with `AS inventory_id` when you also need `item_id`.
- Transaction callback args must match the call order exactly.
- Error responses from route-level `AppError`s do NOT include `data` field.
- `setNow` affects ALL `now()` calls including those in service logic.
- Shop API returns `{ ok: true, data: { stock: [...], character: {...} } }` — field is `stock`, not `stocks`.
- Shop stock items have flat fields (`itemId`, `buyPrice`), not nested (`item.id`).
- New characters have NO inventory items (starter gear not auto-created yet).
- Hero profile endpoint is PUBLIC — no `requireAuth` middleware.
- Profile page is public: no auth.js guard needed; uses ?name= query param for lookup.
- Rate limiters in tests: set `NODE_ENV=test` to get 1000 req/window limit; otherwise tests fail with 429.
- `seed-dev.js` must check `NODE_ENV=production` before any `require()` that loads config (config throws on placeholder SECRET).
- Express `sendFile` rejects `../` path segments — use `path.resolve()` + `path.join()` for absolute paths.
- `express.static` sends its own 404 responses; catch-all must be placed BEFORE static middleware.

## 7. Next-step briefing (9.5)
- **Goal:** Final full run of "Definition of playable" from NOTES.md §7.
- Walk the complete flow: register → log in → create hero → see stats/energy → hunt → gain XP/gold/loot → level up → equip items → buy/sell in shop → start and claim expedition → see leaderboard → log out → log back in (verify persistence).
- Document any gaps or broken steps.
- No code changes expected unless a critical blocker is found.