feat(template): a module that builds and loads — Phase 5 slice 1

The kit's `template/`: a complete, minimal Runic Gateway module a reader copies,
renames, and runs before reading a chapter. Slice 0 landed the workflow that runs
it; this is the tree that workflow was written against, so the `template` job
arms itself with no edit to the guard.

Installed into a real core it adds one public page at `/examplegame/status`, a nav
row pointing at it, one API route described in an OpenAPI fragment core merges,
one table created by an idempotent schema fragment and dropped by a purge file,
and both lifecycle hooks. That is deliberately less than a real module does; what
it is complete about is the shape — every seam used once, with the reasoning next
to it.

Four decisions, settled with the org lead:

1. **Public tier only, plus the lifecycle hooks.** §2.11.1 d1's "one public route",
   plus enough to show the whole vertical seam once. Admin and player tiers become
   worked examples quoted from module-uo in chapter 2 rather than two thirds of a
   tree the reader deletes on day one.
2. **The release workflow ships as a file, in BOTH flavours** — `.gitea/` and
   `.github/`. Neither runs where it sits (a workflow is only read from a
   repository root) and each arms itself when the reader's copy is its own repo.
   Packaging is the part of a module that cannot be guessed at, and the kit's
   audience is outside this org, so assuming Gitea would have been assuming our
   own deployment. Core installs from a URL and does not care where the release
   lives — only that the host is on the operator's `MODULE_SOURCE_HOSTS`.
3. **A rename checklist that CI verifies**, not a rename script. `template/README.md`
   carries the table; `scripts/checkRenameSites.js` holds it against the tree in
   both directions — an unlisted file that still carries the placeholder fails, and
   so does a listed file that no longer does. The second half is the one usually
   left out and the more valuable: a row that has stopped matching reads as
   instructions to edit something that is not there. Same rule core's identifier
   check follows about its own exemptions. It has its own ten-test suite, run by
   CI as `node --test`, because a check that has never been shown to fail is a
   check nobody knows the state of.
4. **A neutral invented game.** One deviation from the literal answer, forced by
   decision 3: the id is `examplegame`, not `example`. The checklist check is a
   text search, and `example` occurs in ordinary English ("for example") all over
   prose that is not a rename site — a placeholder that cannot occur by accident is
   what makes the check answerable instead of a source of false alarms someone
   learns to ignore.

**The pin moves to the 1.4.0 bump** (website `edge` 1b692bf), which is what
`template/module.json` declares as `coreApi`. Slice 0 pinned its parent, before
1.4.0 existed, so `checkCoreApi.js` arms for the first time here — it asserts
EQUALITY, and its failing on the next contract bump is the system working.

Also in CI: the client tests now run AFTER the build (two of them read the built
chunk and skip without one — run first, the job reports green while asking nothing
about the artifact that ships), and `check:swagger` verifies the committed
fragment is current.

## The finding: an UPDATE that changes nothing does not touch ON UPDATE CURRENT_TIMESTAMP

Every suite passed, both guards passed, the chunk built, the module loaded into a
real core and the page rendered correctly. Two hours later the same page said the
world was offline, and it was wrong.

`updated_at` was declared `ON UPDATE CURRENT_TIMESTAMP`, and MariaDB fires that
only when an UPDATE actually CHANGES a value. The boot refresh writes the same
numbers every thirty seconds — which is exactly what a quiet game looks like — so
the timestamp froze at the first write, the row crossed the freshness window, and
the model correctly reported a stale row as offline. Verified against the live
database: two hours of refreshes, `updated_at` still the boot timestamp.

No test in this repo could see it. The model takes its clock as an argument, and
nothing in a suite runs the same UPDATE twice against a real database. It is only
visible as a page that was right when you looked at it and wrong an hour later.

The writer now sets `updated_at = CURRENT_TIMESTAMP` explicitly and the column
drops the clause that was not doing what it looked like it was doing; both carry
the reasoning. Re-verified end to end: the timestamp advances every interval and
the API reports fresh.

Falling out of the fix, the schema fragment gained the rule the reader hits next:
**changing a table is an ALTER, never an edit to its CREATE** — `CREATE TABLE IF
NOT EXISTS` does nothing when the table exists, so an edited column definition
takes effect on a fresh install and on no existing one, which is the worst
possible split because your development database is usually the fresh one.

## Verified

- 29 server tests, 18 client tests, 10 kit-script tests; `check:imports`,
  `check:externals`, `check:swagger` and `checkCoreApi` all green, run in CI's own
  order from a clean `npm ci`.
- Browser smoke (MODULE_API.md §7.7) against a real core built from the pinned
  ref: module `started`, published on `/api/v1/public/modules`, chunk served
  `no-cache` with the right MIME from the entry's directory while `module.json`
  and the server source 404, script tag injected after core's bundle, the page
  rendering inside core's own chrome, the nav row interleaved into the public
  header between Wiki and About, SPA navigation into it from another page, the
  module's path and schema and tag merged into `/api/docs.json`, and
  `[examplegame] registered against core API 1.4.0` in the console with no CSP
  report and no React error.

Refs: MODULE_SYSTEM.md §2.11.1 (slice 1), MODULE_API.md §2.x, §3.x, §5.1, §7.7.

Co-Authored-By: Claude <noreply@anthropic.com>

template/server/index.js

@@ -0,0 +1,98 @@
+// ── The server entry point ─────────────────────────────────────────────────
+//
+// Core requires this file once, synchronously, while its own `app.js` is still
+// being required, and calls the exported function with `(ctx, api)`. That is the
+// entire server-side handshake: everything this module can reach arrives on
+// `ctx`, and everything it can offer is registered through `api`.
+//
+// Normative: MODULE_API.md §2.2 (the entry point) and §2.4 (what you register).
+//
+// ── Three rules, and each one has a failure behind it ──────────────────────
+//
+//  1. **No `await`, and no database.** Core requires `app.js` in two build tools
+//     with the connection pool pointed at a dead port — the route-manifest
+//     generator and the OpenAPI generator both do it — so a module that queried
+//     at registration time would hang both. Anything that needs a live database
+//     goes in `onBoot`, which runs after the schema is up.
+//
+//  2. **Never resolve what core owns.** Your module lives at
+//     `<website>/modules/<id>/`, which is outside core's `server/`, so Node's
+//     resolver never reaches core's `node_modules` and `require('express')` from
+//     here simply fails. express, express-validator, the database, the logger and
+//     the middleware all arrive on `ctx` (§2.3) and are re-exported by `./core`.
+//     This is not a style rule: a second express in the process would be a second
+//     `Router` prototype, exactly as a second React would be a second renderer.
+//
+//  3. **Never reach into core's tree.** No relative path may escape this module's
+//     root. `scripts/checkImports.js` enforces it (§5.1) and CI runs it.
+//
+// ── Why the requires are INSIDE the function ───────────────────────────────
+//
+// Every file below reaches core through `./core`, whose members resolve `ctx`
+// when they are CALLED. But a router writes `const express = core.express` at its
+// own file scope, and that runs the moment the file is required. So
+// `core.init(ctx)` has to happen before the first `require` of anything under
+// `router/`. Hoisting these to the top of the file breaks the module with an
+// error about a missing `ctx`, thrown from a file that never mentions one.
+//
+// Node caches modules, so requiring here costs nothing after the first call.
+
+const core = require('./core')
+
+/**
+ * @param {object} ctx  what core hands the module (MODULE_API.md §2.3), frozen
+ * @param {object} api  what the module registers (§2.4)
+ */
+module.exports = function register(ctx, api) {
+  core.init(ctx)
+
+  /* eslint-disable global-require */
+  const worldRouter = require('./router/public/world.router')
+  const boot = require('./boot')
+  /* eslint-enable global-require */
+
+  const log = core.logger()
+
+  // One prefix, on one tier. The keys here must match `module.json`'s `mounts`
+  // exactly — the loader compares the two and rejects a mismatch in either
+  // direction, so a route you forgot to declare and a prefix you declared and
+  // never registered both fail loudly at boot instead of quietly at runtime.
+  //
+  // This mounts at `/api/v1/public/world`. The router sits INSIDE the tier
+  // router, so it structurally cannot reach above its prefix, and the tier's own
+  // gate is already applied: `public` is behind nothing by design, `admin` sits
+  // behind `noindex, isLoggedIn, requireRole(...)` and `player` behind
+  // `noindex, requireAuth`. You add per-route gates on top; you never
+  // re-implement the tier gate.
+  //
+  // **Prefixes share one namespace with core's own, and `/world` was chosen to
+  // stay out of it.** Core answers `/api/v1/public/` + contact, modules, pages,
+  // posts, settings, status, version and wiki. The loader rejects a collision at
+  // registration time — but four of those eight are mounted at the tier root
+  // rather than under a prefix of their own, and the loader's probe cannot see
+  // them. `/status` would have been the obvious name for this module's route and
+  // is exactly the one that would have gone wrong. Check the list before you
+  // choose (§2.4, and MODULE_SYSTEM.md §2.7's own note about the probe).
+  api.registerRoutes({
+    public: { '/world': worldRouter },
+  })
+
+  // The lifecycle hooks (§2.5). `onBoot` runs after core's schema, after this
+  // module's schema fragment, and BEFORE the HTTP listener binds — so a module
+  // that must not serve traffic until it has warmed a cache gets that for free.
+  // It has no timeout, deliberately: a slow boot delays the listener, which is
+  // the guarantee rather than a problem to be timed out.
+  //
+  // `onShutdown` runs while core's database pool and push dispatcher are still
+  // open, because flushing through them is the only thing it is for. It gets a
+  // five-second budget and is abandoned past it.
+  //
+  // Both are optional. A module with neither still reaches `started`.
+  api.onBoot(boot.onBoot)
+  api.onShutdown(boot.onShutdown)
+
+  log.info('registered', {
+    version: require('../module.json').version,
+    routes: 'public:/world',
+  })
+}