Add nightly-self-review skill + fix cron to use dual models

sync: skill-crawler — SME fork tracking, x-research path, sme-upstream + self-watch (from wiziswiz/skill-crawler@a50f657)

feat: skill-crawler config example — add 5 watch/installed repos

fix: skill-crawler persistent state dir (sync from wiziswiz/skill-crawler@2259bfa)

fix(skill-crawler): write state when SHA matches remote

Upgrade nightly-self-review to dual-model adversarial system

feat: add session cleanup script + weekly cron

Add self-scheduling calendar nudge for stale threads

feat: add source-library skill (Don's second brain for shared URLs)

feat: add skill-crawler

feat: add adversarial-review, x-research-api, consensus-researcher skills + update tracking section

feat: add ELI5 mode to health tracking illness alerts

feat: illness early warning system — biomarker cross-referencing for pre-symptom detection

feat: health-tracking skill + wearable integration examples (WHOOP, Oura, Apple Health)

OpenClaw Starter Kit — proactive agent setup with 15 skills, 8 cron templates, three-layer memory system