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https://github.com/Such-Software/smirk-backend-core.git
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jwinterm
4c83e53839
Wire the settings overlay into the live config path: - AppState.config: Config -> Arc<ArcSwap<Config>> (hot-swappable effective config) + config_base: Arc<Config> (immutable env-only). New AppState::cfg() accessor; every config read goes through it (state.cfg().field), so a runtime-safe operator edit is seen on the next request. One Config type, no parallel path. - Boot (main.rs): load_settings_overlay -> Config::apply_overlay(validate) -> build every client/worker/router from the EFFECTIVE config. A persisted overlay that no longer validates is ignored (boot env-only + loud log), never bricks. Env-only when ADMIN_KEY_INTEGRITY_SECRET is unset. - Migrated ~59 state.config.X reads to state.cfg().X across api/*; bound guards where a reference outlives the statement; integrity_secret returns owned String. - Test harness builds AppState with ArcSwap + config_base (arc-swap dev-dep). Behavior-preserving: with no operator_settings rows, effective == env config. cargo check --all-targets clean; lib tests 256/0.