Write a new SecSkills skill end to end — choosing the plugin bucket and skill tier, writing a description that triggers correctly without stealing traffic from siblings, the required sections, registering the skill in ttp-index.json, adding routing eval cases including negative traps, and running the three validators. Use when adding a skill to this repo, splitting or merging existing skills, fixing a skill that triggers on the wrong requests, or when a new skill fails validate.py, sync_attack.py, or run_evals.py.
