Route Data Compiler

3. Detailed Station Data Collection

For each identified transit line segment between transfer points (or between boarding/alighting station and a transfer point):

• Primary Method: Use fetch-fetch_markdown to retrieve the Wikipedia page for the specific transit line (e.g., "Downtown Line", "East–West MRT line").
• Fallback Method: If Wikipedia fetch fails or is insufficient, use local-web_search with queries like "[Line Name] stations list" or "[Station A] to [Station B] stations".
• From the retrieved data, extract the complete, ordered list of stations for the relevant segment of the line. Ensure the list direction matches the travel direction (e.g., from Little India towards Bugis).

4. Itinerary Compilation

• Assemble the final station sequence by concatenating the lists from each segment, ensuring:
  1. The boarding station is first.
  2. Transfer stations appear only once at the point of transfer.
  3. The sequence flows logically from origin to destination.
• Verify the total count and order against the high-level route from Step 2.

5. Output Generation

• Use filesystem-write_file to save the compiled list of stations to the user-specified file path (e.g., routine.txt).
• Format: One station name per line, in sequential order.
• Provide a concise summary to the user confirming completion, total stations, and the save location.

Key Considerations

• Accuracy: Prefer official sources (Wikipedia, transit authority pages) for station lists. Cross-verify segment endpoints with the directions result.
• Transfers: Pay close attention to the directions result to correctly identify where line changes occur. A transfer station marks the end of one segment and the start of another.
• Naming: Use consistent station naming (e.g., "Changi Airport" not "Changi Airport MRT station" unless the full name is standard).
• Error Handling: If a line segment's stations cannot be reliably determined, note the gap in the summary and use the transfer points as placeholders.

Example Logic (from trajectory)

1. Geocode origin/destination.
2. Find nearest station: Little India (0.5km walk).
3. Get directions: Reveals route: Little India (DT) → Bugis → (transfer) → Tanah Merah → (transfer) → Changi Airport.
4. Fetch data: Get Downtown Line page, extract stations Little India → Rochor → Bugis. Get East–West Line page, extract stations Bugis → ... → Tanah Merah. Get Changi Airport branch info, extract Tanah Merah → Expo → Changi Airport.
5. Compile list, avoiding duplicates at Bugis and Tanah Merah.
6. Write to file.