Add PR Review Skill.

[brandonpage]

This singular skill is a bit over the recommended length (of 500 lines) but is aliased to serve multiple purposes:

• (future) PRism CI Reviews
• Local development, can be invoked with /review
• Used by agents to review code before sending PRs

Eight main sections:

1. Public-API Backward Compatibility
2. OAuth, Token, and Credential Safety
3. SQLCipher / SmartStore Encryption
4. Multi-User Account Correctness
5. Localization
6. Android Platform Hygiene
7. Sample Apps & API Contracts
8. Test Correctness & Coverage

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 66.46%. Comparing base (fdb090a) to head (4c179e8).
⚠️ Report is 18 commits behind head on dev.

Additional details and impacted files

@@             Coverage Diff              @@
##                dev    #2905      +/-   ##
============================================
+ Coverage     66.40%   66.46%   +0.06%     
- Complexity     3097     3100       +3     
============================================
  Files           226      226              
  Lines         17774    17774              
  Branches       2327     2327              
============================================
+ Hits          11802    11813      +11     
+ Misses         4896     4886      -10     
+ Partials       1076     1075       -1     

Components	Coverage Δ
Analytics	48.71% <ø> (ø)
SalesforceSDK	62.62% <ø> (+0.11%)	⬆️
Hybrid	59.30% <ø> (ø)
SmartStore	78.22% <ø> (ø)
MobileSync	82.12% <ø> (ø)
React	51.50% <ø> (ø)
see 3 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[JohnsonEricAtSalesforce]

👍🏻