v0.7.2

Closes the v0.7.1-noted follow-up: a CLI command to resume
paused / failed / zombie papers. Completes the status / cancel /
resume trio so the operator never has to drop down to curl.

Cross-lane

• e2er resume <paper_id> — restart a paused or failed
  paper from the terminal. Optional --max-cost N raises the
  cap atomically with the resume (sent through to the v0.5+
  ResumeRequest body). Surfaces the paper's title + previous
  status + cap delta + last_error before issuing the POST, so
  the operator knows what they're restarting. Unlike status
  and cancel, this command DOES auto-start uvicorn — the user
  is asking the paper to start running again, so the server
  needs to be up.
  • 200 → prints the new transient status (resuming) +
    dashboard URL, optionally tails to terminal via --tail
  • 400 → surfaces the validation detail (e.g. non-positive
    cap) directly so the user can fix and retry
  • 409 → "already running" with a hint to e2er cancel first
  • 404 → "paper not found"
• 9 new regression tests in tests/test_cli_status.py
  covering: no-cap-change happy path, cap-raise happy path,
  completed-paper short-circuit, 400 / 409 / 503 / 404 error
  paths, --tail integration, the API-unreachable branch.

Test counts

• Mocked suite: 590 passed (was 581 in v0.7.1; +9 here).