`flutter pub get` rewrites analysis_options.yaml to exclude build and
platform directories ("Upgrading analysis_options.yaml to exclude build
and platform directories"). Reproduced byte-identically from a clean
detached worktree, so the block is tool-generated and idempotent -- it
reappeared as an uncommitted change in every session until now.
dart analyze is clean both with and without it; the exclude is a
forward-looking guard against platform-dir noise, not a fix.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011w2Pj4Ek3ZNMQVYcFHgXDY
