v0.3.15

Serving Claude through a --api claude seat works again on non-streaming requests.

Fixes

• claude-seat: decode the JSON array that claude 2.1.220 prints (d429a5e)
  Recent Claude Code builds changed --output-format json from a bare result object to a JSON
  array of the whole event sequence. The seat only accepted an object, and its line-scanning
  fallback ran only when the JSON failed to parse — an array parses fine, so the fallback never
  ran and every non-streaming request failed with 502 … no result envelope, while the answer
  sat unread inside the array. Streaming was unaffected, which is why this hid for so long. All
  three output shapes are now handled.

• launch: set only ANTHROPIC_AUTH_TOKEN, never both credential variables (0cd089a)
  grid launch claude no longer exports a second, conflicting credential variable.

• serve: drain on held jobs, not on parked poll workers (5f494e1)
  Shutdown joined every poll worker against one shared 5s budget, and a worker parked in a
  long-poll cannot be woken — so the first one spent the entire budget and the heartbeat and
  reload joins after it got none. Teardown of an idle engine now returns immediately instead of
  always taking 5s, which shortens the window where a departing node is still registered and the
  relay keeps handing it work. Shutdown also stops reporting idle pollers as jobs whose consumers
  may lose a response.

Other changes

• chore: re-lock so uv.lock's grid entry tracks pyproject again (762c133)

Full Changelog: v0.3.14...v0.3.15