Rebuild: coordinator (planner, NNTP pool, spool, prefetcher, leases, rule sets), node API and the edge:node worker

- groups:add / ranges:plan / nodes:create / coordinator:run commands
- the node API: lease, the range's chunks as one framed stream from the
  spool, batches, heartbeat, finish, release (node guard, token per node)
- edge:node: needs COORDINATOR_URL and NODE_TOKEN only (placeholders for
  the rest), posts a batch every 10 chunks, gives its range back on SIGTERM
- releases are gathered per batch: 1.04 chunk rows per release at 10
  chunks per batch (1.35 when built per XOVER chunk)
- partitions are checked per batch instead of remembered

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

app/controllers/access_tokens_controller.ts

@@ -17,7 +17,7 @@ export default class AccessTokensController {
   }
 
   async destroy({ auth }: HttpContext) {
-    const user = auth.getUserOrFail()
+    const user = auth.use('api').getUserOrFail()
     if (user.currentAccessToken) {
       await User.accessTokens.delete(user, user.currentAccessToken.identifier)
     }