Add CONFIRM dialog guard for Run Migration button in Dev Tools

[CasperL1218]

Summary

• Replaced window.confirm() on the "Run Migration" button with a MUI Dialog that requires the admin to type
  CONFIRM before proceeding
• Prevents accidental batch-writes to all apartment records in the database
• No new dependencies or imports needed

Test Plan

1. Go to Admin → Dev Tools → Schema Migration
2. Click "Run Migration" — confirm dialog should open
3. Verify the "Run Migration" button inside the dialog is disabled until CONFIRM is typed exactly
4. Verify Cancel closes the dialog without running anything
5. Type CONFIRM → button enables → migration runs as before

Notes

This PR should be merged after PR #418 (phase1-all-merges), which introduced the Dev Tools tab. Base branch is set
to phase1-all-merges for that reason — retarget to main once #418 merges.

Breaking Changes

[dti-github-bot]

[diff-counting] Significant lines: 0.

[bryanshao07]

Looks good! Adding the "CONFIRM" button feature is a good safeguarding feature. One small thing might be making the confirmation check case-insensitive with .toUpperCase() for usability, or making it super clear that it must be in all caps. Good overall.

[Natk21]

Looks good. Right now it looks like you want the user to explicitly type "CONFIRM" in all caps, which is a fine design choice.