fix(ci): address PR review — filter comments, trim whitespace, warn on missing scripts

- Filter YAML comment lines (grep -v '^\s*#') from both extraction
  pipelines to prevent phantom canonical IDs
- Trim trailing whitespace from extracted fact_ids so grep -qxF exact
  match works reliably
- Pre-commit dispatcher now prints explicit warning when a check script
  is missing instead of silently skipping
- Document --no-verify bypass for emergencies in DEVOPS.md

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

docs/DEVOPS.md

@@ -129,6 +129,12 @@ Active checks:
 
 The `core.hooksPath` setting uses a relative path (`.config/hooks`) that resolves per worktree, so it works correctly across all worktrees in the repository.
 
+To bypass hooks in an emergency:
+
+```bash
+git commit --no-verify -m "fix: emergency hotfix"
+```
+
 ## Configuration Files
 
 The `.config/` directory holds shared configuration for linters, formatters, and CI. Examples of what goes here: