ci: address second codex/copilot review round

- claude.yml: drop the issues "assigned" trigger; its author_association
  gate keys on the issue author, not the assigner, so a maintainer
  assigning an outside contributor's issue would be wrongly skipped.
- claude-code-review.yml: issues: read -> write so use_sticky_comment can
  create/update its PR comment via the issues API.
- hil SKILL.md: make local/remote command blocks copy-pasteable (drop
  [-b BOARD_NAME] notation for concrete examples) and fix timeout
  (600000 ms is 10 min; use 1200000 ms for the stated 20 min).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.github/workflows/claude-code-review.yml

@@ -21,7 +21,7 @@ jobs:
     permissions:
       contents: read
       pull-requests: write
-      issues: read
+      issues: write # use_sticky_comment posts/updates a PR comment via the issues API
       id-token: write
       actions: read # Required for Claude to read CI results on PRs
 

.github/workflows/claude.yml

@@ -6,7 +6,10 @@ on:
   pull_request_review_comment:
     types: [created]
   issues:
-    types: [opened, assigned]
+    # only "opened" — an issue's author_association gates the summon below;
+    # "assigned" would gate on the issue author, not the assigner, so a
+    # maintainer assigning an outsider's issue would be wrongly skipped.
+    types: [opened]
   pull_request_review:
     types: [submitted]