Defame1297 e5a08ebb45 fix(hooks): preserve exec bit on re-run and fix pipefail on empty grep ...

Two bugs in setup-hooks.sh:
1. awk+mv to replace a marker block created a 644 temp file, losing the
   exec bit. chmod +x after every write_block call fixes this. Regression
   test added to idempotency block.
2. set -euo pipefail in the deployed pre-commit hook caused grep to exit 1
   when no files of a given type were staged, aborting the hook. Changed
   all filter pipes to process substitution with || true so no-match is
   handled gracefully.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TP4EGbBg3XMcyF28Lx78XJ

2026-06-20 21:53:24 +00:00

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