BK202503 PR impact scan
Determine the base and changed files from the current Git diff. For every changed public symbol, configuration key, route, CLI flag, or schema:
- Find direct callers, imports, consumers, and tests.
- Compare each call site against the changed signature or contract.
- Identify migration requirements, compatibility risks, and missing focused tests.
- Distinguish proven impact from assumptions.
Return a ranked report with Blocker, Watch, and Nit, followed by affected files and proposed test coverage. Do not modify source files or generate a PR automatically.