chore: update allowed-tools section in developing-cast skill documentation

Author: jh.park

act_operator/act_operator/scaffold/{{ cookiecutter.act_slug }}/.claude/skills/developing-cast/SKILL.md

@@ -2,7 +2,9 @@
 name: developing-cast
 description: Implements LangGraph cast components following systematic workflow (state, deps, nodes, conditions, graph). Use when implementing cast, building nodes/agents/tools, need LangGraph patterns (memory, retry, guardrails, vector stores), or ask "implement cast", "build graph", "add node".
 allowed-tools:
-  - Bash(uv run sync *)
+  - Bash(uv sync *)
+  - Bash(uv add --package *)
+  - Read
   - Write
   - Edit
 ---