docs: require PR discussion comments in reviews

.codex/skills/review-pr/SKILL.md

@@ -25,10 +25,12 @@ description: Phase 2 skill. Use when a PR is created or updated. Review PR again
    - Identify the linked issue from PR body (`Fixes #<id>` or `Closes #<id>`).
    - Read issue comments, find the **Final Requirements** comment: `mcp__gitea__.issue_read` (`method: "get_comments"`).
    - Read existing reviews: `mcp__gitea__.pull_request_read` (`method: "get_reviews"`).
+   - Read PR discussion comments: `mcp__gitea__.issue_read` (`method: "get_comments"`), using the PR number as the index.
    - If PR is already merged or closed, say so and stop.
 
 2. **Read review history** (for re-reviews)
    - Get review comments: `mcp__gitea__.pull_request_read` (`method: "get_review_comments"`).
+   - Treat reviews, inline review comments, and PR discussion comments as separate context sources.
    - If author addressed feedback in a follow-up commit, focus on new commits but still sanity-check the full diff.
 
 3. **Get the diff**
@@ -102,6 +104,7 @@ Validation:
 - Do NOT edit code on the PR.
 - FAIL if PR contains unrelated changes or scope creep.
 - Post review proactively if verdict is clear.
+- Do not post a verdict until PR discussion comments have been checked.
 - Mention validation commands you actually ran.
 - No bracketed author/tool tags.
 - Accept `docs/adr/**` when it records a direct, durable decision tied to the issue scope.