V6.1 yet more backup/.env cleanup

.env.production.example

@@ -25,15 +25,20 @@ DEFAULT_PROMPT_NAME=transcribe_document.md
 # TRANSCRIPTION_TOP_P=
 
 # --- persistence ---
+# Common database settings:
 DATABASE__DRIVER=postgres
-# DATABASE__PATH=./data/transcription.db
-DATABASE__HOST=postgres
-DATABASE__PORT=5432
 DATABASE__DATABASE=transcription
 DATABASE__USER=transcription
 DATABASE__PASSWORD=replace-with-strong-password
 BOOTSTRAP_SCHEMA_ON_STARTUP=false
-SQLITE_CHECK_SAME_THREAD=false
+
+# SQLite-specific settings:
+# DATABASE__PATH=./data/transcription.db
+# SQLITE_CHECK_SAME_THREAD=false
+
+# Postgres-specific settings:
+DATABASE__HOST=postgres
+DATABASE__PORT=5432
 
 # --- filesystem paths ---
 UPLOAD_DIR=/app/uploads
@@ -53,11 +58,6 @@ WORKER_MIN_TRANSCRIPTION_CHARS=0
 WORKER_MIN_TRANSCRIPTION_LINES=0
 WORKER_FAIL_ON_FINISH_REASON_LENGTH=false
 
-# --- postgres container ---
-POSTGRES_DB=transcription
-POSTGRES_USER=transcription
-POSTGRES_PASSWORD=replace-with-strong-password
-
 # --- cloudflare tunnel ---
 # Required for token-based tunnel startup.
 CLOUDFLARE_TUNNEL_TOKEN=replace-with-cloudflare-tunnel-token