Tests that construct AIAgent(api_key=..., ...) without base_url were
relying on provider-resolver fallback state from other tests in the
same xdist worker. When matrix-split distributed them to different
shards, the resolver found no env vars and no config and raised
'No LLM provider configured'.
Fix: add base_url='https://openrouter.ai/api/v1' to every AIAgent
construction that passes api_key. AIAgent.__init__ with both args set
takes the direct-construction path (line 960 in run_agent.py) and
skips resolver fallback entirely, making these tests self-contained.
7 files, 16 call sites updated via AST-based fixup. One call site
(test_none_base_url_passed_as_none) left alone — that test's
intent is to verify base_url=None behavior, so adding base_url
defeats the test.
Validation:
- tests/run_agent/ full run: 760 passed, 0 failed (was 1 failure
under the AST script's over-application, now clean)
- Matrix shard 3 local run: 3083 passed, 0 failed, 1m44s
