sqlite0-opus-4-6-20260208

Run all pre-commit checks including build, unit tests, differential tests, and ADR-0009 file size validation. Use before committing changes to ensure quality.

Inspect all source file sizes and report ADR-0009 module splitting rule violations. Use when checking whether files exceed the 500-line limit or before adding new features.

Extract a module from a large file following ADR-0009. Moves functions to a new file, updates imports, and verifies all tests pass. Use when a file exceeds 500 lines and needs splitting.