b761d7d4f7
On a fresh install the security_configs table is auto-migrated but contains no rows. Any code path reading SecurityConfig by name received an empty Go struct with zero values, producing an all-disabled UI state that offered no guidance to the user and made the security status endpoint appear broken. Adds a SeedDefaultSecurityConfig function that uses FirstOrCreate to guarantee a default row exists with safe, disabled-by-default values on every startup. The call is idempotent — existing rows are never modified, so upgrades are unaffected. If the seed fails the application logs a warning and continues rather than crashing. Zero-valued rate-limit fields are intentional and safe: the Cerberus rate-limit middleware applies hardcoded fallback thresholds when the stored values are zero, so enabling rate limiting without configuring thresholds results in sensible defaults rather than a divide-by-zero or traffic block. Adds three unit tests covering the empty-database, idempotent, and do-not-overwrite-existing paths.