CRON/CRON_TIMER_FIX_2026-04-29.md:
- moved from doc/cron/ to CRON/ (correct location)
CRON/FISSION_CRON_NOTES.md:
- added section on timer->router 401 and resolution via console-gateway
- documented push URL bug (missing :8090 -> timeout)
- documented full working chain with timestamps
- added reminder: console service port is 8090, not 80
doc/report-2026-04-29-cron-fix.md:
- new session report: symptoms, diagnosis, all 3 problems fixed,
architecture diagram, affected components table, lessons learned