oidc: authenticate SPA users via Authentik

- Add OIDC proxy endpoints (GET config, POST token) to API server
- Implement PKCE Authorization Code flow in SPA
- Enable Authentik login tab in Config page
- Handle callback + auto-refresh + session restore
- Add restart: unless-stopped to all persistent services
- Configure OIDC issuer + client_id in docker-compose

docker-compose.yml

@@ -11,6 +11,7 @@
 services:
   postgres:
     image: timescale/timescaledb:2.17.2-pg16
+    restart: unless-stopped
     environment:
       POSTGRES_DB: oikos
       POSTGRES_USER: oikos
@@ -57,6 +58,7 @@ services:
     build:
       context: .
       dockerfile: compose/oikos/Dockerfile
+    restart: unless-stopped
     profiles: ["dev", "full"]
     depends_on:
       seed:
@@ -70,6 +72,8 @@ services:
       # every request needs this token. nomos uses the same value to call
       # back into api's /mcp and /api/v1/approvals/*/decision.
       OIKOS_MCP_BEARER_TOKEN: ${OIKOS_MCP_BEARER_TOKEN:-dev-token}
+      OIKOS_OIDC_ISSUER: ${OIKOS_OIDC_ISSUER:-https://auth.hubris.network/application/o/oikos/}
+      OIKOS_OIDC_CLIENT_ID: ${OIKOS_OIDC_CLIENT_ID:-otkHBSueHJsYtOHstL6rn5izeGgyOsavp1qA1hod}
       OIKOS_NOMOS_AGENT_SLUG: ${OIKOS_NOMOS_AGENT_SLUG:-agent:nomos}
       NOMOS_PROXY_URL: http://nomos:8092
     volumes:
@@ -85,6 +89,7 @@ services:
     build:
       context: .
       dockerfile: compose/oikos/Dockerfile
+    restart: unless-stopped
     profiles: ["dev", "full"]
     depends_on:
       seed:
@@ -108,6 +113,7 @@ services:
     build:
       context: .
       dockerfile: compose/oikos/Dockerfile
+    restart: unless-stopped
     profiles: ["dev", "full"]
     depends_on:
       seed:
@@ -129,6 +135,7 @@ services:
     build:
       context: .
       dockerfile: compose/nomos/Dockerfile
+    restart: unless-stopped
     profiles: ["full"]
     depends_on:
       api:
@@ -155,6 +162,7 @@ services:
     build:
       context: .
       dockerfile: compose/web/Dockerfile
+    restart: unless-stopped
     profiles: ["dev", "full"]
     ports:
       - "8091:80"
@@ -163,6 +171,7 @@ services:
   # Redis (required by Infisical — Phase 5)
   redis:
     image: redis:7-alpine
+    restart: unless-stopped
     profiles: ["infisical", "full"]
     volumes:
       - redis-data:/data
@@ -175,6 +184,7 @@ services:
   # Infisical self-hosted (Phase 5 secrets management)
   infisical:
     image: infisical/infisical:latest
+    restart: unless-stopped
     profiles: ["infisical", "full"]
     depends_on:
       postgres: