Improve release changelog and fix MCP port

Generate structured changelogs from completed stories instead of raw
commit messages. Group by features, bug fixes, and refactors. Filter
out story-kit automation commits.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

script/release

@@ -71,20 +71,93 @@ ls -lh "${DIST}"/
 echo "==> Generating changelog..."
 PREV_TAG=$(git describe --tags --abbrev=0 2>/dev/null || echo "")
 if [ -n "$PREV_TAG" ]; then
-  CHANGELOG=$(git log "${PREV_TAG}..HEAD" --pretty=format:"- %s" --no-merges)
+  LOG_RANGE="${PREV_TAG}..HEAD"
   RANGE="${PREV_TAG}...${TAG}"
 else
-  CHANGELOG=$(git log --pretty=format:"- %s" --no-merges)
+  LOG_RANGE=""
   RANGE="initial...${TAG}"
 fi
 
-if [ -z "$CHANGELOG" ]; then
-  CHANGELOG="- No changes since last release"
+# Extract completed stories/bugs/refactors from "story-kit: merge <id>" commits.
+# Deduplicate (a story may have been merged more than once after reverts).
+if [ -n "$LOG_RANGE" ]; then
+  MERGED_RAW=$(git log "$LOG_RANGE" --pretty=format:"%s" --no-merges \
+    | grep "^story-kit: merge " | sed 's/^story-kit: merge //' | sort -u)
+else
+  MERGED_RAW=$(git log --pretty=format:"%s" --no-merges \
+    | grep "^story-kit: merge " | sed 's/^story-kit: merge //' | sort -u)
 fi
 
-RELEASE_BODY="## What's Changed
+# Categorise merged work items and format names.
+FEATURES=""
+FIXES=""
+REFACTORS=""
+while IFS= read -r item; do
+  [ -z "$item" ] && continue
+  # Strip the numeric prefix and type to get the human name.
+  name=$(echo "$item" | sed -E 's/^[0-9]+_(story|bug|refactor|spike)_//' | tr '_' ' ')
+  # Capitalise first letter.
+  name="$(echo "${name:0:1}" | tr '[:lower:]' '[:upper:]')${name:1}"
+  case "$item" in
+    *_bug_*)     FIXES="${FIXES}- ${name}\n" ;;
+    *_refactor_*) REFACTORS="${REFACTORS}- ${name}\n" ;;
+    *)           FEATURES="${FEATURES}- ${name}\n" ;;
+  esac
+done <<< "$MERGED_RAW"
 
-${CHANGELOG}
+# Collect non-automation manual commits (direct fixes, version bumps, etc).
+if [ -n "$LOG_RANGE" ]; then
+  MANUAL=$(git log "$LOG_RANGE" --pretty=format:"%s" --no-merges \
+    | grep -v "^story-kit: " \
+    | grep -v "^Revert \"story-kit: " \
+    | grep -v "^Bump version" \
+    | sed 's/^/- /')
+else
+  MANUAL=$(git log --pretty=format:"%s" --no-merges \
+    | grep -v "^story-kit: " \
+    | grep -v "^Revert \"story-kit: " \
+    | grep -v "^Bump version" \
+    | sed 's/^/- /')
+fi
+
+# Assemble the release body.
+RELEASE_BODY="## What's Changed"
+
+if [ -n "$FEATURES" ]; then
+  RELEASE_BODY="${RELEASE_BODY}
+
+### Features
+$(echo -e "$FEATURES")"
+fi
+
+if [ -n "$FIXES" ]; then
+  RELEASE_BODY="${RELEASE_BODY}
+
+### Bug Fixes
+$(echo -e "$FIXES")"
+fi
+
+if [ -n "$REFACTORS" ]; then
+  RELEASE_BODY="${RELEASE_BODY}
+
+### Refactors
+$(echo -e "$REFACTORS")"
+fi
+
+if [ -n "$MANUAL" ]; then
+  RELEASE_BODY="${RELEASE_BODY}
+
+### Other Changes
+${MANUAL}"
+fi
+
+if [ -z "$FEATURES" ] && [ -z "$FIXES" ] && [ -z "$REFACTORS" ] && [ -z "$MANUAL" ]; then
+  RELEASE_BODY="${RELEASE_BODY}
+
+- No changes since last release"
+fi
+
+RELEASE_BODY="${RELEASE_BODY}
 
 **Full diff:** ${GITEA_URL}/${REPO}/compare/${RANGE}"