✨ feat(skills): curate code workflow skills

Add a Gitea CI triage skill with legacy web-log fallback, document first-party and third-party skill roles, and register selected third-party code workflow sources.

Remove the first-party bulk refactor workflow in favor of the registered codebase migration replacement.

.gitea/ci/sync_thirdparty_skills.sh

@@ -30,6 +30,7 @@ for entry in data["sources"]:
                 entry.get("template_root", ""),
                 entry.get("data_dir", ""),
                 entry.get("scripts_dir", ""),
+                "\x1e".join(entry.get("include_skill_dirs", [])),
             ]
         )
     )
@@ -105,6 +106,24 @@ tracked_skill_exists() {
   [ -f "skills/$name/SKILL.md" ]
 }
 
+skill_dir_included() {
+  local name="$1"
+  local include_skill_dirs="$2"
+
+  [ -n "$include_skill_dirs" ] || return 0
+
+  local IFS=$'\x1e'
+  local expected
+  read -r -a included <<< "$include_skill_dirs"
+  for expected in "${included[@]}"; do
+    if [ "$name" = "$expected" ]; then
+      return 0
+    fi
+  done
+
+  return 1
+}
+
 
 cd "$REPO_DIR"
 
@@ -130,7 +149,7 @@ if ! emit_sources_tsv > "$sources_file"; then
   exit 1
 fi
 
-while IFS=$'\x1f' read -r source_id snapshot_dir sync_mode source_list skills_subdir output_name platform_config template_root data_dir scripts_dir; do
+while IFS=$'\x1f' read -r source_id snapshot_dir sync_mode source_list skills_subdir output_name platform_config template_root data_dir scripts_dir include_skill_dirs; do
   [ -n "$source_id" ] || continue
 
   if [ -f "$source_list" ]; then
@@ -142,7 +161,7 @@ while IFS=$'\x1f' read -r source_id snapshot_dir sync_mode source_list skills_su
 done < "$sources_file"
 
 declare -A owners=()
-while IFS=$'\x1f' read -r source_id snapshot_dir sync_mode source_list skills_subdir output_name platform_config template_root data_dir scripts_dir; do
+while IFS=$'\x1f' read -r source_id snapshot_dir sync_mode source_list skills_subdir output_name platform_config template_root data_dir scripts_dir include_skill_dirs; do
   [ -n "$source_id" ] || continue
 
   git archive --format=tar "origin/${THIRDPARTY_BRANCH}" "$snapshot_dir" | tar -xf - -C "$tmp_dir"
@@ -160,6 +179,9 @@ while IFS=$'\x1f' read -r source_id snapshot_dir sync_mode source_list skills_su
       for dir in "$source_skills_dir"/*; do
         [ -d "$dir" ] || continue
         name="$(basename "$dir")"
+        if ! skill_dir_included "$name" "$include_skill_dirs"; then
+          continue
+        fi
         if [ -n "${owners[$name]:-}" ] && [ "${owners[$name]}" != "$source_id" ]; then
           echo "ERROR: duplicate third-party skill name: $name" >&2
           exit 1