perf(search): Cache building list at startup to speed up search

[SiddhantBhirud]

Description

Previously, the building list was fetched from the backend every time the search button was tapped. Now it is cached at startup in a global variable and reused in the search sheet, making search snappy.

Type of Change

• New feature (feat)
• Bug fix (fix)
• Refactor / code improvement
• Dependency / build update
• Documentation
• Other (explain)

Changes Made

• Flutter:
  • Added globalBuildingLocs to globals.dart to cache buildings in memory
  • Updated _loadStopsForLaunch in map_screen.dart to fetch buildings at startup
  • Updated search_sheet_main.dart to use cached data instead of fetching on every search

Testing Done

Flutter:

• Tested on:
  • iOS Simulator
  • Android Emulator
  • Physical device

Checklist

• Commit messages follow Conventional Commits
• PR title follows [type](scope): short description
• PR target branch is not main and is our current working update branch
• No print() / debugPrint() / console.log() left in production code
• Secrets / keys not committed

[iswheeler]

Implementation is looking pretty good. Wanted to ask why the bundle identifier and project team were overwritten in ios/Runner.xcodeproj/project.pbxproj? Not sure if that was changed automatically but we'd like to keep the original XCode project data.

[i-kumar]

yeah maybe we should add it to gitignore? but i wonder if it'd even compile

[SiddhantBhirud]

Sorry, I thought I needed to make those changes to run the app on my device locally. I have reverted them back to the original values.

[kurz3m3]

Please verify that the app runs as intended before you commit or PR anything. You should also be looking at the files that you change, if the file isn't in the lib folder then you most likely edited something you shouldn't be committing...

Revert the changes you did to the files in the ios folder and we can take a look at it after that.

[kurz3m3]

Hey, you didn't fix all the changes you made in this file. Please revert all the changes done to project.pbxproj

The map will not display otherwise. Please make sure you test and verify that the app is working before you commit or pull request anything...