fix: log targets in image defaults and docs

.env.example

@@ -46,10 +46,11 @@ ALLOW_REGISTRATION=true
 # RATE_LIMIT=60
 # SECURE_COOKIES=true
 # Handler-level logs come from the `http_axum` crate; startup/wiring logs come
-# from `server`. Include both — `server=info` alone silently drops handler logs.
+# from `bootstrap`; config-load logs come from `config`. Include all three —
+# `server=info` alone silently drops them.
 # Crates not named here (adapters, etc.) still log warnings and errors unless
 # you set a bare level yourself (e.g. `info,http_axum=debug`).
-# RUST_LOG=server=info,http_axum=info,tower_http=info,worker=info
+# RUST_LOG=server=info,worker=info,bootstrap=info,config=info,http_axum=info,tower_http=info
 
 # CORS (for SPA development only)
 # CORS_ORIGINS=http://localhost:5173