feat: 收录 inkreach-teable-plugin skill；install.sh 安装全部技能

skills/ 现包含 inkreach-teable + inkreach-teable-plugin，
npx skills add 一并安装两个；install.sh 改为遍历安装 skills/*。

skills/inkreach-teable/scripts/install.sh

@@ -62,13 +62,17 @@ exec node "$REPO_ROOT/dist/bin.js" "\$@"
 WRAPPER
 chmod +x "$HOME/.local/bin/inkreach-teable"
 
-# Install the skill at user scope so it works in ANY workspace, including
-# checkouts of the inkreach-teable application repo (which no longer bundles it).
-if [ -d "$SKILL_DIR" ]; then
+# Install every skill in this repo at user scope so they work in ANY workspace,
+# including checkouts of the inkreach-teable application repo (which no longer
+# bundles them): inkreach-teable + inkreach-teable-plugin.
+if [ -d "$REPO_ROOT/skills" ]; then
   mkdir -p "$HOME/.zcode/skills"
-  rm -rf "$HOME/.zcode/skills/inkreach-teable"
-  cp -r "$SKILL_DIR" "$HOME/.zcode/skills/inkreach-teable"
-  echo "✓ skill installed to ~/.zcode/skills/inkreach-teable (user scope)"
+  for skill_dir in "$REPO_ROOT/skills"/*/; do
+    skill_name="$(basename "$skill_dir")"
+    rm -rf "$HOME/.zcode/skills/$skill_name"
+    cp -r "$skill_dir" "$HOME/.zcode/skills/$skill_name"
+    echo "✓ skill installed: $skill_name (~/.zcode/skills, user scope)"
+  done
 fi
 
 # Verify