Claude Code transcript - page 1/6

{
  "subagent_type": "Plan",
  "prompt": "Create an implementation plan for a FOSDEM 2026 Playdate Schedule Reader application based on the following specification and API documentation.\n\n## SPECIFICATION (from SPEC.md):\n\n**App Title:** FOSDEM Schedule\n\n**Libraries Required:** CoreLibs/ui (gridview), CoreLibs/graphics, CoreLibs/timer, CoreLibs/nineslice\n\n### Key Features:\n\n1. **Timezone Validation:**\n   - On init, calculate offset: (playdate.getTime() - playdate.getGMTTime())\n   - If offset is NOT 3600 seconds (1 hour for CET) → display warning and halt\n\n2. **Data Layer:**\n   - Target File: schedule.ics in Data Disk\n   - Sync Logic: Check if file exists, download from https://fosdem.org/2026/schedule/ical if missing\n   - Refresh via System Menu \"Refresh Schedule\"\n   \n3. **ICS Parsing:**\n   - Parse VEVENT blocks with fields: DTSTART, DTEND, SUMMARY, CATEGORIES, URL, LOCATION\n   - Date format: YYYYMMDDTHHMMSS (e.g., 20260201T090000) → convert to epoch seconds\n   - Organize into: allEvents (flat list), eventsByCategory map, categoryNames (sorted alphabetically)\n   - Handle comma-separated CATEGORIES\n\n4. **Logic & State:**\n   - hiddenCategories table (saved to datastore)\n   - \"Main Track\" should never be hidden\n   - currentCategoryIndex, currentScrollPosition\n   - Initial load: set to \"Main Track\", scroll to first event where DTEND > current time\n\n5. **UI Architecture:**\n   - Main Schedule View using playdate.ui.gridview\n   - Header (30px): White text on black rect showing \"< Category Name >\"\n   - Sub-Header: Location of currently selected row\n   - Cell format: [HH:MM] Summary (respect 24-hour time setting)\n   - QR Code Overlay: triggered by A button, shows event URL as QR code\n\n6. **Input Mapping:**\n   - Up/Down: navigate rows\n   - Left/Right: switch categories (wrap around), reset scroll to active talk\n   - Crank: category switching\n   - A Button: show QR code\n   - B Button (in QR view): dismiss overlay\n\n7. **System Menu:**\n   - \"Refresh Schedule\" menu item\n   - \"Devrooms\" filter view (toggle categories on/off)\n\n## API DOCUMENTATION (key functions available):\n\n- Time: playdate.getTime(), playdate.getGMTTime(), playdate.epochFromTime(), playdate.shouldDisplay24HourTime()\n- Files: playdate.file.exists(), playdate.file.open(), playdate.datastore.write/read()\n- Network: playdate.network.http.new(), :get(), :read(), :setRequestCompleteCallback()\n- Graphics: playdate.graphics (drawing, fonts, images), playdate.graphics.generateQRCode()\n- UI: playdate.ui.gridview with drawCell, setNumberOfRows, selectNextRow/selectPreviousRow, etc.\n- Input: inputHandlers with AButtonDown, BButtonDown, upButtonDown, leftButtonDown, cranked(), etc.\n- System Menu: playdate.getSystemMenu(), menu:addMenuItem()\n\nPlease create a detailed implementation plan with:\n1. File structure\n2. Implementation order (what to build first)\n3. Key modules and their responsibilities\n4. Critical implementation details for each component\n5. Any potential challenges or edge cases to handle"
}