feat(backend, frontend): make changes to use our security modules more effectively (#10123)

<!-- Clearly explain the need for these changes: -->
Doing the CASA Audit and this is something to check
### Changes 🏗️
- limits APIs to use their specific endpoints
- use expected trusted sources for each block and requests call
- Use cryptographically valid string comparisons
- Don't log secrets

<!-- Concisely describe all of the changes made in this pull request:
-->

### Checklist 📋

#### For code changes:
- [x] I have clearly listed my changes in the PR description
- [x] I have made a test plan
- [x] I have tested my changes according to the test plan:
  <!-- Put your test plan here: -->
  - [x] Testing in dev branch once merged

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Co-authored-by: Swifty <craigswift13@gmail.com>

.gitignore

@@ -176,3 +176,4 @@ autogpt_platform/backend/settings.py
 
 *.ign.*
 .test-contents
+.claude/settings.local.json