fix: move Logto to auth.localhost subdomain to avoid /assets path conflict

Logto's login page references /assets/* which conflicts with the SPA's
assets at the same path. Using Host-based routing (auth.localhost) gives
Logto its own namespace - all paths on that subdomain go to Logto,
eliminating the conflict. *.localhost resolves to 127.0.0.1 and is a
secure context.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docker-compose.yml

@@ -39,7 +39,7 @@ services:
     entrypoint: ["sh", "-c", "npm run cli db seed -- --swe && npm start"]
     environment:
       DB_URL: postgres://${POSTGRES_USER:-cameleer}:${POSTGRES_PASSWORD:-cameleer_dev}@postgres:5432/logto
-      ENDPOINT: http://${PUBLIC_HOST:-localhost}
+      ENDPOINT: http://auth.${PUBLIC_HOST:-localhost}
       ADMIN_ENDPOINT: http://${PUBLIC_HOST:-localhost}:3002
       TRUST_PROXY_HEADER: 1
     healthcheck:
@@ -50,7 +50,7 @@ services:
       start_period: 15s
     labels:
       - traefik.enable=true
-      - traefik.http.routers.logto.rule=PathPrefix(`/oidc`) || PathPrefix(`/interaction`)
+      - traefik.http.routers.logto.rule=Host(`auth.${PUBLIC_HOST:-localhost}`)
       - traefik.http.services.logto.loadbalancer.server.port=3001
     networks:
       - cameleer
@@ -67,7 +67,7 @@ services:
     environment:
       LOGTO_ENDPOINT: http://logto:3001
       LOGTO_ADMIN_ENDPOINT: http://logto:3002
-      LOGTO_PUBLIC_ENDPOINT: http://${PUBLIC_HOST:-localhost}
+      LOGTO_PUBLIC_ENDPOINT: http://auth.${PUBLIC_HOST:-localhost}
       PUBLIC_HOST: ${PUBLIC_HOST:-localhost}
       PG_HOST: postgres
       PG_USER: ${POSTGRES_USER:-cameleer}
@@ -104,8 +104,8 @@ services:
       SPRING_DATASOURCE_USERNAME: ${POSTGRES_USER:-cameleer}
       SPRING_DATASOURCE_PASSWORD: ${POSTGRES_PASSWORD:-cameleer_dev}
       LOGTO_ENDPOINT: ${LOGTO_ENDPOINT:-http://logto:3001}
-      LOGTO_PUBLIC_ENDPOINT: http://${PUBLIC_HOST:-localhost}
-      LOGTO_ISSUER_URI: http://${PUBLIC_HOST:-localhost}/oidc
+      LOGTO_PUBLIC_ENDPOINT: http://auth.${PUBLIC_HOST:-localhost}
+      LOGTO_ISSUER_URI: http://auth.${PUBLIC_HOST:-localhost}/oidc
       LOGTO_JWK_SET_URI: ${LOGTO_ENDPOINT:-http://logto:3001}/oidc/jwks
       LOGTO_M2M_CLIENT_ID: ${LOGTO_M2M_CLIENT_ID:-}
       LOGTO_M2M_CLIENT_SECRET: ${LOGTO_M2M_CLIENT_SECRET:-}
@@ -139,7 +139,7 @@ services:
       CAMELEER_AUTH_TOKEN: ${CAMELEER_AUTH_TOKEN:-default-bootstrap-token}
       CAMELEER_JWT_SECRET: ${CAMELEER_JWT_SECRET:-cameleer-dev-jwt-secret-change-in-production}
       CAMELEER_TENANT_ID: ${CAMELEER_TENANT_SLUG:-default}
-      CAMELEER_OIDC_ISSUER_URI: http://${PUBLIC_HOST:-localhost}/oidc
+      CAMELEER_OIDC_ISSUER_URI: http://auth.${PUBLIC_HOST:-localhost}/oidc
       CAMELEER_OIDC_AUDIENCE: ${CAMELEER_OIDC_AUDIENCE:-https://api.cameleer.local}
     healthcheck:
       test: ["CMD-SHELL", "curl -sf http://localhost:8081/api/v1/health || exit 1"]

docker/logto-bootstrap.sh

@@ -104,7 +104,7 @@ get_admin_token() {
 get_default_token() {
   curl -s -X POST "${LOGTO_ENDPOINT}/oidc/token" \
     -H "Content-Type: application/x-www-form-urlencoded" \
-    -H "Host: ${HOST}" \
+    -H "Host: auth.${HOST}" \
     -d "grant_type=client_credentials&client_id=${1}&client_secret=${2}&resource=${MGMT_API_RESOURCE}&scope=all"
 }
 
@@ -116,18 +116,18 @@ log "Got Management API token."
 
 # --- Helper: Logto API calls ---
 api_get() {
-  curl -s -H "Authorization: Bearer $TOKEN" -H "Host: ${HOST}" "${LOGTO_ENDPOINT}${1}" 2>/dev/null || echo "[]"
+  curl -s -H "Authorization: Bearer $TOKEN" -H "Host: auth.${HOST}" "${LOGTO_ENDPOINT}${1}" 2>/dev/null || echo "[]"
 }
 api_post() {
-  curl -s -X POST -H "Authorization: Bearer $TOKEN" -H "Content-Type: application/json" -H "Host: ${HOST}" \
+  curl -s -X POST -H "Authorization: Bearer $TOKEN" -H "Content-Type: application/json" -H "Host: auth.${HOST}" \
     -d "$2" "${LOGTO_ENDPOINT}${1}" 2>/dev/null || true
 }
 api_put() {
-  curl -s -X PUT -H "Authorization: Bearer $TOKEN" -H "Content-Type: application/json" -H "Host: ${HOST}" \
+  curl -s -X PUT -H "Authorization: Bearer $TOKEN" -H "Content-Type: application/json" -H "Host: auth.${HOST}" \
     -d "$2" "${LOGTO_ENDPOINT}${1}" 2>/dev/null || true
 }
 api_delete() {
-  curl -s -X DELETE -H "Authorization: Bearer $TOKEN" -H "Host: ${HOST}" "${LOGTO_ENDPOINT}${1}" 2>/dev/null || true
+  curl -s -X DELETE -H "Authorization: Bearer $TOKEN" -H "Host: auth.${HOST}" "${LOGTO_ENDPOINT}${1}" 2>/dev/null || true
 }
 
 # ============================================================

ui/src/config.ts

@@ -22,7 +22,7 @@ export async function fetchConfig(): Promise<AppConfig> {
 
   // Fallback to env vars (Vite dev mode)
   cached = {
-    logtoEndpoint: import.meta.env.VITE_LOGTO_ENDPOINT || `http://${window.location.hostname}`,
+    logtoEndpoint: import.meta.env.VITE_LOGTO_ENDPOINT || `http://auth.${window.location.hostname}`,
     logtoClientId: import.meta.env.VITE_LOGTO_CLIENT_ID || '',
     logtoResource: import.meta.env.VITE_LOGTO_RESOURCE || '',
     scopes: [