more index cleanups to optimise space

src/vctp.yml

@@ -2,6 +2,8 @@ settings:
   log_level: "info"
   log_output: "text"
   database_driver: "sqlite"
+  # PostgreSQL remains experimental and is disabled by default.
+  enable_experimental_postgres: false
   database_url: "/var/lib/vctp/db.sqlite3"
   reports_dir: /var/lib/vctp/reports  
   bind_ip:
@@ -9,9 +11,14 @@ settings:
   bind_disable_tls: false
   tls_cert_filename: "/var/lib/vctp/vctp.crt"
   tls_key_filename: "/var/lib/vctp/vctp.key"
+  # Optional explicit key source for credential encryption/decryption.
+  # Leave empty to use host-derived key material.
+  encryption_key: ""
   vcenter_username: ""
   vcenter_password: ""
   vcenter_insecure: false
+  # Legacy API endpoints are disabled by default.
+  enable_legacy_api: false
   # Deprecated (ignored): legacy event poller
   vcenter_event_polling_seconds: 0
   # Deprecated (ignored): legacy inventory poller
@@ -21,6 +28,9 @@ settings:
   hourly_snapshot_concurrency: 0
   hourly_snapshot_max_age_days: 60
   daily_snapshot_max_age_months: 12
+  # Retain hourly-table indexes only for recent data.
+  # -1 disables index cleanup; 0 trims indexes from all hourly tables.
+  hourly_index_max_age_days: 7
   snapshot_cleanup_cron: "30 2 * * *"
   hourly_snapshot_retry_seconds: 300
   hourly_snapshot_max_retries: 3