The router previously registered two POST /backups/schedule handlers:
- line 60: canonical appId-keyed handler with premiumGating + Joi schema
- line 520: dead 'name'-keyed handler, no premiumGating, no validation
Express only matches the FIRST registered handler per METHOD+PATH, so the
line-520 handler was unreachable. It was a latent vulnerability waiting on
a future refactor that swapped handler order (e.g. a route-mount change
like the DC-052 audit-log shadowing fix). If ever reached, it would have
- skipped premium gating (licenseManager.requirePremium not called)
- skipped the Joi schema validation (no validateBody)
- written to config.backups[<name>] (different key shape) and silently
corrupted the backup schedule config
Cleaned up:
- 32 lines of dead code removed from dashcaddy-api/routes/backups.js
- 7-line NOTE comment added at the SCHEDULE ENDPOINTS header warning
future contributors not to re-add the duplicate
- 7 new tests in __tests__/routes/backups.schedule.routes.test.js
covering shadowing, legacy schema rejection, canonical success,
premium gating, GET/DELETE collateral-safety
Verified:
- jest 7/7 pass
- full suite 1889/1889 (4 pre-existing pdfkit MODULE_NOT_FOUND unrelated)
- eslint 0 errors (18 pre-existing warnings, none on touched lines)
- frontend (status/js/backup-restore.js) only POSTs the canonical schema
- 90s GLM-5.3 judge round 1: grade=A, 2 polish suggestions folded
[grade=A]
