Claude Opus 5.5 (effort default (no --effort flag) · thinking on) on Fix an async job pool (retries, deadlock, error capture) with hidden tests

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  "result": "I fixed the library and added tests, but I couldn't run `python -m pytest -q` as asked. pytest isn't installed, there's no `python` command (only `python3`, 3.13), and with no network I couldn't install it. Instead I ran the tests with a small stand-in runner in `/tmp`. **All 12 tests pass on the fixed code; on the original code only 2 pass.** Please run real pytest once on a machine that has it.\n\n## Bugs fixed (`jobpool/__init__.py`)\n1. **Failed jobs crashed the whole run.** A job that used up all its attempts raised its error, which aborted every other job. It now returns the error object in its slot of the results list, as the README says.\n2. **The pool hung after a few failures.** A failed job never gave back its concurrency slot, so after `concurrency` failures no further jobs could start. The slot is now always released, whether the job succeeds or fails.\n3. **Retry counts were off by one.** `retries=2` made 2 attempts instead of 3. It now makes `retries + 1`. A side effect of the old bug: `retries=0` made no attempts at all and crashed. That works now too.\n4. **The pool broke when reused.** The concurrency limiter was created once when the pool was built. That tied it to the first event loop, so a second `asyncio.run(...)` failed, and slots lost to failures carried over into later runs. A fresh limiter is now created on every `run()`.\n\nTwo extra changes:\n- `JobPool(concurrency=0)` or `retries=-1` now raises `ValueError` straight away. Before, these gave a hang or no attempts.\n- **Behaviour choice for you to confirm:** `stats` is now reset at the start of each `run()` and describes only the latest run, rather than adding up across runs. The README doesn't say which it should be. If you want running totals, it's a one-line change.\n\n## Tests (`tests/test_bugs.py`)\nThere are tests for each bug above, plus: a run with more failures than slots, the concurrency limit holding when jobs fail, success on the last retry, an empty job list, and reuse both within one event loop and across several.\n\nOn the original code, most new tests fail early because of bug 1, so they don't check the hang and reuse bugs separately. I traced through those two fixes by hand but didn't confirm that their tests fail on code where only that one bug is present.",
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