Merge origin/main, resolve CHANGELOG conflict, bump to v0.13.7.0

Main landed v0.13.6.0 (GStack Learns) while this branch had v0.13.6.0
(Community Wave). Resolved by keeping both entries and bumping this
branch to v0.13.7.0. Regenerated SKILL.md files to pick up new learn
skill and apply the find -exec rm fix from this branch.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

review/SKILL.md.tmpl

@@ -104,6 +104,8 @@ Run `git diff origin/<base>` to get the full diff. This includes both committed
 
 ---
 
+{{LEARNINGS_SEARCH}}
+
 ## Step 4: Two-pass review
 
 Apply the checklist against the diff in two passes:
@@ -122,6 +124,8 @@ Takes seconds, prevents recommending outdated patterns. If WebSearch is unavaila
 
 Follow the output format specified in the checklist. Respect the suppressions — do NOT flag items listed in the "DO NOT flag" section.
 
+{{CONFIDENCE_CALIBRATION}}
+
 ---
 
 ## Step 4.5: Design Review (conditional)
@@ -273,6 +277,8 @@ Substitute:
 - `informational` = remaining unresolved informational findings
 - `COMMIT` = output of `git rev-parse --short HEAD`
 
+{{LEARNINGS_LOG}}
+
 If the review exits early before a real review completes (for example, no diff against the base branch), do **not** write this entry.
 
 ## Important Rules