normalize all stacks to conventions

- VOL_PATH always defaults to /data; vscode/opencode VOL_PROJECTS nests it
- TZ defaults to America/Vancouver (was UTC in etherpad, ntfy, redis)
- compose section order fixed (volumes before environment, command after networks)
- all default secrets are the literal ChangeThisPassword (grep-friendly,
  users must change them); removed a real key from ollama sample.env
- sample.env synced with compose: missing vars added with defaults, dead vars removed
- invoiceninja_dev/openarchiver_dev: app services had no environment block,
  wired all sample.env vars through so the stacks actually work
- opencode: sample.env OLLAMA_HOST renamed to OLLAMA_HOST_URL to match compose
- TZ values unquoted consistently

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

thunderbird/compose.yaml

@@ -4,13 +4,13 @@ services:
     image: ${THUNDERBIRD_IMAGE:-jlesage/thunderbird}
     restart: ${THUNDERBIRD_RESTART:-unless-stopped}
     volumes:
-      - ${VOL_PATH}/thunderbird/config:/config
-      - ${VOL_PATH}/thunderbird/export:/export
+      - ${VOL_PATH:-/data}/thunderbird/config:/config
+      - ${VOL_PATH:-/data}/thunderbird/export:/export
     environment:
       - TZ=${THUNDERBIRD_TZ:-America/Vancouver}
       - WEB_AUTHENTICATION=${THUNDERBIRD_WEB_AUTHENTICATION:-1}
       - WEB_AUTHENTICATION_USERNAME=${THUNDERBIRD_WEB_AUTHENTICATION_USERNAME:-user}
-      - WEB_AUTHENTICATION_PASSWORD=${THUNDERBIRD_WEB_AUTHENTICATION_PASSWORD:-password}
+      - WEB_AUTHENTICATION_PASSWORD=${THUNDERBIRD_WEB_AUTHENTICATION_PASSWORD:-ChangeThisPassword}
       - SECURE_CONNECTION=${THUNDERBIRD_SECURE_CONNECTION:-1}
     ports:
       - ${THUNDERBIRD_PORT:-5800}:5800