refactor(hooks): remove generate-claude-sections from pre-commit

Auto-generating CLAUDE.md during commit caused a dirty working tree
after every commit — the hook modified CLAUDE.md post-staging, leaving
an unstaged diff. Script is preserved for manual use during /learning.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: shadowdevcode

.husky/pre-commit

@@ -3,4 +3,3 @@ node scripts/lib/check-secrets.js
 node scripts/lib/check-file-sizes.js
 node scripts/lib/check-env-files.js
 node scripts/lib/check-patterns.js
-node scripts/lib/generate-claude-sections.js