generalize runtime ownership with doctor and local skill migration

bin/mosaic-sync-skills

@@ -5,6 +5,7 @@ MOSAIC_HOME="${MOSAIC_HOME:-$HOME/.mosaic}"
 SKILLS_REPO_URL="${MOSAIC_SKILLS_REPO_URL:-https://git.mosaicstack.dev/mosaic/agent-skills.git}"
 SKILLS_REPO_DIR="${MOSAIC_SKILLS_REPO_DIR:-$MOSAIC_HOME/sources/agent-skills}"
 MOSAIC_SKILLS_DIR="$MOSAIC_HOME/skills"
+MOSAIC_LOCAL_SKILLS_DIR="$MOSAIC_HOME/skills-local"
 
 fetch=1
 link_only=0
@@ -13,10 +14,10 @@ usage() {
   cat <<USAGE
 Usage: $(basename "$0") [options]
 
-Sync canonical skills into ~/.mosaic/skills and link them into runtime skill directories.
+Sync canonical skills into ~/.mosaic/skills and link all Mosaic skills into runtime skill directories.
 
 Options:
-  --link-only     Skip git clone/pull and only relink from ~/.mosaic/skills
+  --link-only     Skip git clone/pull and only relink from ~/.mosaic/{skills,skills-local}
   --no-link       Sync canonical skills but do not update runtime links
   -h, --help      Show help
 
@@ -49,7 +50,7 @@ while [[ $# -gt 0 ]]; do
   esac
 done
 
-mkdir -p "$MOSAIC_HOME" "$MOSAIC_SKILLS_DIR"
+mkdir -p "$MOSAIC_HOME" "$MOSAIC_SKILLS_DIR" "$MOSAIC_LOCAL_SKILLS_DIR"
 
 if [[ $fetch -eq 1 ]]; then
   if [[ -d "$SKILLS_REPO_DIR/.git" ]]; then
@@ -134,6 +135,12 @@ for target in "${link_targets[@]}"; do
     link_skill_into_target "$skill" "$target"
   done < <(find "$MOSAIC_SKILLS_DIR" -mindepth 1 -maxdepth 1 -type d -print0)
 
+  if [[ -d "$MOSAIC_LOCAL_SKILLS_DIR" ]]; then
+    while IFS= read -r -d '' skill; do
+      link_skill_into_target "$skill" "$target"
+    done < <(find "$MOSAIC_LOCAL_SKILLS_DIR" -mindepth 1 -maxdepth 1 -type d -print0)
+  fi
+
   echo "[mosaic-skills] Linked skills into: $target"
 done