Rebuild: test the corrupt-chunk report

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/functional/node_api.spec.ts

@@ -84,4 +84,24 @@ test.group('Node API', (group) => {
     assert.equal(range.status, 'done')
     assert.isFalse(await Spool.has(rangeId, { from: 1, to: 100 }))
   })
+  test('a chunk that does not inflate: reported, removed from the spool, the range goes back', async ({ client, assert }) => {
+    const [g] = await db.table('groups').insert({ name: GROUP, priority: 1 }).returning('id')
+    const [r] = await db.table('ranges').insert({ group_id: g.id, start_id: 1, end_id: 300, next_id: 1, spooled_chunks: 3 }).returning('id')
+    const rangeId = Number(r.id)
+    for (const span of Spool.chunksOf({ start: 1, end: 300 })) await Spool.write(rangeId, span, chunk(span.from + 10))
+    const node = await Node.create({ name: 'n1' })
+    const token = (await Node.accessTokens.create(node)).value!.release()
+    ;(await client.post('/api/v1/node/lease').bearerToken(token)).assertStatus(200)
+
+    ;(await client.post(`/api/v1/node/ranges/${rangeId}/corrupt`).bearerToken(token).json({ from: 101 })).assertStatus(200)
+    assert.deepEqual(
+      await Promise.all(Spool.chunksOf({ start: 1, end: 300 }).map((span) => Spool.has(rangeId, span))),
+      [true, false, true]
+    )
+    const range = await db.from('ranges').where('id', rangeId).first()
+    assert.equal(range.status, 'planned')
+    assert.isNull(range.node_id)
+    // No longer this node's: a second report is refused.
+    ;(await client.post(`/api/v1/node/ranges/${rangeId}/corrupt`).bearerToken(token).json({ from: 101 })).assertStatus(409)
+  })
 })