Portal server mode for Dokploy: Dockerfile, PORTAL_URLS, PORTAL_SERVER

The results Portal in a Linux container (python 3.13-slim + ODBC Driver
18). PORTAL_SERVER=1: no Start / Stop (the bot runs on the Windows PC).
PORTAL_URLS: allowed hosts / origins, Secure cookie when all https.
RESULTS_DB_CONN (a SQL login) goes in Dokploy's environment, never here.
71 test files, 1222 tests.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/ecw_bot/settings.py

@@ -688,6 +688,13 @@ RESULTS_DB_CONN = _env(
     "DATABASE=Charge_Validation;Trusted_Connection=yes;"
     "TrustServerCertificate=yes;")
 
+# The Portal on a server (Dokploy, 2026-10-27). PORTAL_URLS: the address(es)
+# people type, comma separated (e.g. https://cv.example.com); empty = this
+# PC only (127.0.0.1:8000). PORTAL_SERVER=1: no Start / Stop — the bot runs
+# only on the Windows PC.
+PORTAL_URLS = _env("PORTAL_URLS")
+PORTAL_SERVER = _env_bool("PORTAL_SERVER", False)
+
 # eCW builds the file server-side over a wide date range, so this is generous.
 DOWNLOAD_TIMEOUT = _env_int("DOWNLOAD_TIMEOUT_MS", 300_000)   # 5 min