10e980cd69
* fix: remove unrecognized fields from Claude Code Stop hook output
Claude Code validates Stop hook JSON output against its hook contract
schema which only accepts {decision?, reason?, systemMessage?}. The
formatOutput() function was returning {continue, suppressOutput} which
are not part of the Claude Code hook API, causing "JSON validation
failed" errors on every session stop.
Return an empty object {} for the default case (no hookSpecificOutput),
preserving only systemMessage when present. This is valid for all hook
event types and eliminates the schema validation error.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* test: add unhappy-path tests for formatOutput per PR review
Add edge case coverage for malformed input (undefined/null), falsy
systemMessage values, non-contract field stripping, and contract key
allowlist. Also add defensive null guard to formatOutput matching
normalizeInput pattern.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Co-authored-by: Alex Worland <alexworland@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>