Claude Haiku 5.5 (effort default (no --effort flag) · thinking on) on Model ladder: fix 10 real merged bugs with tests hidden

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  "result": "Fixed. `validate.URL` now accepts a fragment directly after the host, and a bare `#frag` in relative mode. The full suite passes: 1192 tests.\n\n**Cause:** In `src/marshmallow/validate.py`, the regex's `relative_part` only allowed the remainder after the host to start with `/` or `?`. A `#` right after the host therefore never matched.\n\n**Change:** `relative_part` now allows `#` as well:\n\n```python\nrelative_part = r\"(?:/?|[/?#]\\S+)\\Z\"\n```\n\nThis covers both reported cases. `http://example.org#fragment` and `http://[REDACTED:email]#fragment` now pass, and `#frag` passes with `relative=True` and with relative-only mode.\n\n**Tests** added to `tests/test_validate.py`:\n- Absolute valid: `http://example.org#fragment`, `http://[REDACTED:email]#fragment`, `https://example.com#section`, `http://example.org/#fragment`, `http://example.org?a=1#fragment`.\n- Relative valid: `#frag` and `http://example.org#fragment`.\n- Relative-only valid: `#frag`.\n\nThe existing invalid-URL cases still reject as before. I haven't committed the change.",
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