HOTFIX: Add CI infrastructure pattern to ci-changes-detector (#2080)

## 🚨 URGENT HOTFIX for Master

This fixes the 9 failing detect-changes jobs on master caused by PR
#2077.

## Root Cause

PR #2077 added patterns for Pro test files BUT the ci-changes-detector
script itself was missing a pattern for CI infrastructure files
(`script/*`, `bin/*`, `.github/workflows/*`).

When PR #2077 merged (changing only `script/ci-changes-detector`):
1. Detector classified this as docs-only (ironically!)
2. ensure-master-docs-safety ran and found previous commit had failures
3. CI correctly failed to prevent false-positive "passing"

The safety mechanism worked correctly, but revealed a meta-problem:
**changes to CI infrastructure bypass CI validation**.

## Changes

- ✅ Add pattern for `script/*`, `bin/*`, `.github/workflows/*`,
`.github/actions/*`, `lefthook.yml`
- ✅ CI infrastructure changes now trigger ALL test suites
- ✅ Ensures changes to CI scripts are validated before merge
- ✅ Prevents the detector from bypassing its own detection

## Testing

```bash
# Before fix
echo "script/ci-changes-detector" | script/ci-changes-detector
# Output: ✓ Documentation-only changes

# After fix  
echo "script/ci-changes-detector" | script/ci-changes-detector
# Output: Changed file categories:
#   • Ruby source code
#   • JavaScript/TypeScript code
#   • Dummy app
#   • Generators
#   [... all test suites triggered]
```

## Impact

- Fixes 9 failing jobs on master immediately
- Completes the fix from PR #2077  
- Ensures CI infrastructure changes are properly validated
- Prevents future meta-problems

🤖 Generated with [Claude Code](https://claude.com/claude-code)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **Chores**
* Enhanced CI infrastructure change detection to trigger comprehensive
test validation when CI configuration files are modified.

<sub>✏️ Tip: You can customize this high-level summary in your review
settings.</sub>

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Co-authored-by: Claude <[email protected]>

Author: justin808

script/ci-changes-detector

@@ -138,6 +138,19 @@ while IFS= read -r file; do
       DOCS_ONLY=false
       PRO_LINT_CONFIG_CHANGED=true
       ;;
+
+    # CI infrastructure files (scripts, workflows, CI configs)
+    # Changes to CI infrastructure should trigger tests to validate the changes work
+    script/*|script/**/*|bin/*|bin/**/*|.github/workflows/*|.github/actions/*|.github/actions/**/*|lefthook.yml)
+      DOCS_ONLY=false
+      RUBY_CHANGED=true  # Trigger all tests for CI infrastructure changes
+      JS_CHANGED=true
+      SPEC_DUMMY_CHANGED=true
+      GENERATORS_CHANGED=true
+      PRO_RUBY_CHANGED=true
+      PRO_JS_CHANGED=true
+      PRO_DUMMY_CHANGED=true
+      ;;
   esac
 done <<< "$CHANGED_FILES"