🤖 Fix: Ignore Codex 'all clear' comments in CI check (#81)

## Problem

When Codex reviews a PR and doesn't find any issues, it leaves a regular
comment:

> Codex Review: Didn't find any major issues. Delightful!

The current `check_codex_comments.sh` script treats **all** regular
Codex comments as blocking, including these "all clear" messages. This
caused PR #80 to be blocked even though Codex approved it.

## Solution

Filter out Codex comments that contain "Didn't find any major issues" so
they don't block the merge.

## Testing

- ✅ PR #80 (has "Delightful" comment): Now passes
- ✅ PR #74 (has actual review comment): Still blocks correctly

## Changes

- Updated `scripts/check_codex_comments.sh` to use `jq` filter that
excludes "all clear" comments
- Only actionable Codex feedback will now block PRs

_Generated with `cmux`_

Author: ammario

scripts/check_codex_comments.sh

@@ -14,8 +14,9 @@ BOT_LOGIN_GRAPHQL="chatgpt-codex-connector"    # GraphQL does not
 echo "Checking for unresolved Codex comments in PR #${PR_NUMBER}..."
 
 # Get all regular issue comments from the Codex bot (these can't be resolved)
+# Filter out "all clear" comments that indicate no issues found
 REGULAR_COMMENTS=$(gh api "/repos/{owner}/{repo}/issues/${PR_NUMBER}/comments" \
-    --jq "[.[] | select(.user.login == \"${BOT_LOGIN_REST}\")]")
+    --jq "[.[] | select(.user.login == \"${BOT_LOGIN_REST}\") | select(.body | test(\"Didn't find any major issues\") | not)]")
 
 REGULAR_COUNT=$(echo "$REGULAR_COMMENTS" | jq 'length')