Update alphaear skills to use MiniMax as default LLM

Changes:
- Added 'minimax' provider to LLM factory
- Changed default LLM_PROVIDER from 'ust' to 'minimax'
- Changed default LLM_MODEL from 'Qwen' to 'MiniMax-Text-01'
- Updated REASONING_MODEL_PROVIDER and TOOL_MODEL_PROVIDER to minimax
- Sentiment tools now prefer MINIMAX_API_KEY over UST_KEY_API
- .env.example updated with MiniMax defaults

scripts/install-openclaw-skills.sh

@@ -67,17 +67,20 @@ find_opencode_folders() {
 
 install_all_to_folder() {
     local target_dir="$1"
-    local count=0
     mkdir -p "$target_dir"
-    for skill_dir in "$SKILLS_DIR"/*/; do
-        [ -d "$skill_dir" ] || continue
-        skill_name=$(basename "$skill_dir")
-        if [ -f "$skill_dir/SKILL.md" ]; then
-            [ -d "${target_dir}/${skill_name}" ] && rm -rf "${target_dir}/${skill_name}"
-            cp -r "$skill_dir" "${target_dir}/${skill_name}"
-            count=$((count + 1))
-        fi
-    done
+    if command -v rsync &> /dev/null; then
+        rsync -a --delete "$SKILLS_DIR/" "$target_dir/"
+    else
+        for skill_dir in "$SKILLS_DIR"/*/; do
+            [ -d "$skill_dir" ] || continue
+            skill_name=$(basename "$skill_dir")
+            if [ -f "$skill_dir/SKILL.md" ]; then
+                [ -d "${target_dir}/${skill_name}" ] && rm -rf "${target_dir}/${skill_name}"
+                cp -r "$skill_dir" "${target_dir}/${skill_name}"
+            fi
+        done
+    fi
+    local count=$(ls -d "$target_dir"/*/ 2>/dev/null | wc -l | tr -d ' ')
     echo -e "${SUCCESS}[OK]${NC} Installed $count skills to ${target_dir}"
 }