feat: runtime environment detection for multi-env support

env.js now detects environment from hostname at runtime:
- eagle-dev.apps.silver.devops.gov.bc.ca → dev config
- eagle-test.apps.silver.devops.gov.bc.ca → test config
- projects.eao.gov.bc.ca → prod config
- localhost/other → local config (uses proxy.conf.json for analytics)

This allows the same image to be promoted through environments
without rebuilding, matching the existing image tagging workflow.

Author: danieltruong

src/env.js

@@ -5,21 +5,57 @@
   // turn on/off the console.log's
   window.__env.debugMode = true;
 
+  // Detect environment from hostname at runtime
+  const hostname = window.location.hostname;
+  
+  // Environment configuration based on hostname
+  const envConfigs = {
+    'eagle-dev.apps.silver.devops.gov.bc.ca': {
+      environment: 'dev',
+      bannerColour: 'blue',
+      apiLocation: 'https://eagle-dev.apps.silver.devops.gov.bc.ca',
+      keycloakUrl: 'https://dev.loginproxy.gov.bc.ca/auth',
+      analyticsUrl: 'https://penguin-analytics-api-6cdc9e-dev.apps.silver.devops.gov.bc.ca/events'
+    },
+    'eagle-test.apps.silver.devops.gov.bc.ca': {
+      environment: 'test',
+      bannerColour: 'orange',
+      apiLocation: 'https://eagle-test.apps.silver.devops.gov.bc.ca',
+      keycloakUrl: 'https://test.loginproxy.gov.bc.ca/auth',
+      analyticsUrl: 'https://penguin-analytics-api-6cdc9e-test.apps.silver.devops.gov.bc.ca/events'
+    },
+    'projects.eao.gov.bc.ca': {
+      environment: 'prod',
+      bannerColour: 'green',
+      apiLocation: 'https://projects.eao.gov.bc.ca',
+      keycloakUrl: 'https://loginproxy.gov.bc.ca/auth',
+      analyticsUrl: 'https://penguin-analytics-api-6cdc9e-prod.apps.silver.devops.gov.bc.ca/events'
+    }
+  };
+
+  // Default to local config
+  const config = envConfigs[hostname] || {
+    environment: 'local',
+    bannerColour: 'red',
+    apiLocation: 'https://eagle-dev.apps.silver.devops.gov.bc.ca',
+    keycloakUrl: 'https://dev.loginproxy.gov.bc.ca/auth',
+    analyticsUrl: '/api/analytics'  // Uses proxy.conf.json locally
+  };
+
   // Environment name
-  window.__env.ENVIRONMENT = 'local';  // local | dev | test | prod
-  window.__env.BANNER_COLOUR = 'red'
-  window.__env.API_LOCATION = 'https://eagle-dev.apps.silver.devops.gov.bc.ca';
+  window.__env.ENVIRONMENT = config.environment;
+  window.__env.BANNER_COLOUR = config.bannerColour;
+  window.__env.API_LOCATION = config.apiLocation;
   window.__env.API_PATH = '/api';
   window.__env.API_PUBLIC_PATH = '/api/public';
   window.__env.KEYCLOAK_CLIENT_ID = 'eagle-admin-console';
-  window.__env.KEYCLOAK_URL = 'https://dev.loginproxy.gov.bc.ca/auth';
+  window.__env.KEYCLOAK_URL = config.keycloakUrl;
   window.__env.KEYCLOAK_REALM = 'eao-epic';
   window.__env.KEYCLOAK_ENABLED = true;
 
   // Analytics configuration
-  // Direct URL to penguin-analytics API (route-based, not nginx proxy)
-  window.__env.ANALYTICS_API_URL = 'https://penguin-analytics-api-6cdc9e-dev.apps.silver.devops.gov.bc.ca/events';
-  window.__env.ANALYTICS_DEBUG = window.__env.ENVIRONMENT === 'local';
+  window.__env.ANALYTICS_API_URL = config.analyticsUrl;
+  window.__env.ANALYTICS_DEBUG = config.environment === 'local';
 
   // Add any feature-toggles
   // window.__env.coolFeatureActive = false;