chore(conductor): Add conductor setup files and new track 'timezone_rrule_20260218'

conductor/product-guidelines.md

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+# Product Guidelines - SilverBullet iCalendar Plug
+
+## Documentation and Communication Style
+- **Technical and Concise:** All documentation, configuration examples, and user-facing messages should be accurate, brief, and focused on providing high value to the user. Avoid unnecessary fluff or conversational filler.
+- **Example-Driven:** Prioritize clear, copy-pasteable configuration snippets and query examples to help users get started quickly.
+
+## Visual Identity and User Interface
+- **Native SilverBullet Integration:** The plug should feel like a core part of the SilverBullet experience. Commands, notifications, and any future UI elements must strictly adhere to SilverBullet's design patterns and aesthetic.
+- **Informative and Actionable Feedback:** 
+    - Notifications should provide immediate clarity on the outcome of actions (e.g., "Synced 194 events", "Sync failed: HTTP 404").
+    - Error messages should be descriptive enough to aid in troubleshooting (e.g., specifying which source failed).
+- **Subtle Consistency:** Use consistent naming conventions for commands (`iCalendar: Sync`, `iCalendar: Force Sync`, etc.) to maintain a professional and organized command palette.
+
+## Code and Maintenance Guidelines (Inferred)
+- **Robust Error Handling:** Always catch and log errors during fetch and parse operations to prevent the entire sync process from crashing.
+- **Performance First:** Efficiently process large `.ics` files and avoid redundant indexing operations.
+- **Version Alignment:** Ensure the version number is synchronized across `deno.json`, `icalendar.plug.yaml`, `PLUG.md`, and the TypeScript source code.