feat(atlas): serve the spawn atlas and give operators a panel for it

Protocol 3.0 order 3 (Part C), second of two website PRs. #112 built the data
pipeline; this makes it reachable — six public routes, five admin ones, two
public pages and an admin panel. Still website-only: no plugin, no sidecar, no
new event kinds, no wire change.

The API sits at /api/v1/public/atlas, not under /public/shard. Nothing here
touches the sidecar, so the pages stay complete while the shard is down, and a
/shard prefix would imply a dependency the atlas does not have. Unlike /shard/*
it IS site-mode gated, like /posts and /wiki: a bestiary is site content.

Every route carries requireFeature('atlas') and projects its response. The atlas
feature declares no sensitive fields, so the projection is a no-op today — the
call is there because v3.md 3.6.1's rule is that the FIRST field needing a gate
should be covered by construction rather than by a retrofit.

Two bugs the UI surfaced, both fixed here:

Respawn delays were stored in the wrong unit, sometimes. XmlSpawner writes
MinDelay/MaxDelay in minutes and switches to seconds only when a delay does not
divide into whole minutes, flagging it per record with DelayInSec. A `5` means
five minutes on one spawner and five seconds on the next, both plausible, and
the pipeline stored the raw number. 170 of 6,455 stock spawners are second
flagged. The parser normalises to seconds; the API and UI carry seconds.

That exposed the hash gate as a trap. "Has the tree changed?" is the wrong
question on its own: an install whose maps never change would have kept serving
the old readings forever, because the only thing compared was the tree.
PARSER_VERSION is now stored beside the source hashes and a mismatch counts as
drift, so any future parse correction lands on the next boot.

Also renamed the detail route's spawn-point array to `spawners` — it was
`points`, which is the COUNT on the search route, so one key meant a number in
one place and an array in the other.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01U7CBg11prhLimL9iHSX1bP

client/test/apiClient.test.js

@@ -140,3 +140,44 @@ test('DELETE self-service session revoke encodes the id and uses the DELETE meth
   assert.equal(calls[0].opts.method, 'DELETE')
   assert.match(calls[0].url, /\/auth\/me\/sessions\/a%20b%2Fc$/)
 })
+
+// ── spawn atlas (Protocol 3.0 Part C) ───────────────────────────────────
+// The atlas lives at /public/atlas, NOT under /public/shard: it is static shard
+// content parsed from the shard's own files, so it must not look sidecar-backed.
+// Asserted here because the split is a design decision, not an accident of
+// spelling.
+test('atlas reads hit /public/atlas, not /public/shard', async () => {
+  willReply({ body: { creatures: [] } })
+  await api.atlas.creatures()
+  assert.equal(calls[0].url, '/api/v1/public/atlas/creatures')
+})
+
+test('atlas.creatures() sends only the filters that are set', async () => {
+  willReply({ body: { creatures: [] } })
+  await api.atlas.creatures({ q: 'lizard man', facet: 'Ter Mur', limit: 25 })
+  const url = new URL(calls[0].url, 'http://x')
+  assert.equal(url.pathname, '/api/v1/public/atlas/creatures')
+  assert.equal(url.searchParams.get('q'), 'lizard man')
+  assert.equal(url.searchParams.get('facet'), 'Ter Mur')
+  assert.equal(url.searchParams.get('limit'), '25')
+  assert.equal(url.searchParams.get('offset'), null) // 0 is not sent
+})
+
+test('atlas.creature() encodes the slug and carries the facet filter through', async () => {
+  willReply({ body: {} })
+  await api.atlas.creature('lizardman/rare', { facet: 'Felucca' })
+  assert.match(calls[0].url, /\/public\/atlas\/creatures\/lizardman%2Frare\?facet=Felucca$/)
+})
+
+test('admin atlas actions use the right methods and bodies', async () => {
+  willReply({ body: {} })
+  await api.admin.atlas.import(true)
+  assert.equal(calls[0].url, '/api/v1/admin/shard/atlas/import')
+  assert.equal(calls[0].opts.method, 'POST')
+  assert.equal(calls[0].opts.body, JSON.stringify({ force: true }))
+
+  willReply({ body: {} })
+  await api.admin.atlas.setPath('/srv/servuo')
+  assert.equal(calls[1].opts.method, 'PUT')
+  assert.equal(calls[1].opts.body, JSON.stringify({ path: '/srv/servuo' }))
+})