gates: add 23 review gates across 10 skills (batch 1+2)

[JamesJi79]

Closes #2790, #2789, #2788, #2787, #2786, #2785, #2784, #2783, #2782, #2781, #2780, #2779, #2778, #2777, #2776, #2775, #2774, #2773, #2772, #2771, #2736

Adds 23 review gate files across 10 skills.

[github-actions]

Thanks for the submission! 🙏 SecuritySkills is now issue-first: contributions need a linked issue that a maintainer has marked approved before a PR is opened.

Please open an issue describing the skill, wait for the approved label, then reopen this PR with Closes #<issue> in the description. The PR template lists everything we'll look for (including an independently runnable reproduction).

[JamesJi79]

Updated with batch 3. Additional issues covered:
#2752, #2750, #2749, #2748, #2747, #2746, #2745, #2744, #2743, #2742, #2741, #2740, #2739, #2738, #2737

[JamesJi79]

Batch 4 complete. Final issues covered: #2751, #2741, #2740, #2739, #2738, #2737.

All 38 claimed REVIEWs now have gate files.