Add schedule skill

shared/schedule/SKILL.md

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+---
+name: schedule
+description: "Create a scheduled task that can be run on demand or automatically on an interval."
+---
+
+You are creating a reusable shortcut from the current session. Follow these steps:
+
+## 1. Analyze the session
+
+Review the session history to identify the core task the user performed or requested. Distill it into a single, repeatable objective.
+
+## 2. Draft a prompt
+
+The prompt will be used for future autonomous runs — it must be entirely self-contained. Future runs will NOT have access to this session, so never reference "the current conversation," "the above," or any ephemeral context.
+
+Include in the description:
+- A clear objective statement (what to accomplish)
+- Specific steps to execute
+- Any relevant file paths, URLs, repositories, or tool names
+- Expected output or success criteria
+- Any constraints or preferences the user expressed
+
+Write the description in second-person imperative ("Check the inbox…", "Run the test suite…"). Keep it concise but complete enough that another Claude session could execute it cold.
+
+## 3. Choose a taskName
+
+Pick a short, descriptive name in kebab-case (e.g. "daily-inbox-summary", "weekly-dep-audit", "format-pr-description").
+
+## 4. Determine scheduling
+
+Decide whether the task is recurring or one-off:
+- **Clearly one-off** (e.g. "refactor this function") → omit the cron expression.
+- **Clearly recurring** (e.g. "check my inbox every morning") → include an appropriate cron expression.
+- **Ambiguous** → propose a reasonable schedule and ask the user to confirm using AskUserQuestion before proceeding.
+
+**IMPORTANT: Cron expressions run in the user's local machine timezone, NOT UTC.** Use local times directly in the cron expression. For example, if the user asks for "8am every Friday", use `0 8 * * 5` — do NOT convert to UTC.
+
+Finally, call the "create_scheduled_task" tool.