feat(sync): re-auth prompt on expired session + server deployment artifacts

On auth failure during pull (access + refresh both expired), sync_plugin now
fires SyncConfigureRequestEvent so the Connect modal reopens automatically
instead of leaving the player with a silent error status. The modal's existing
double-open guard keeps repeated failures idempotent.

Also removes the unused SyncAuthResultEvent (results handled inline in
SyncSetupPlugin via PendingAuthTask polling) and adds server deployment
artifacts: Dockerfile (multi-stage, SQLX_OFFLINE), docker-compose.yml (SQLite
volume, health-check), and .env.example for local development setup.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

solitaire_server/docker-compose.yml

@@ -0,0 +1,25 @@
+services:
+  server:
+    build:
+      context: ..
+      dockerfile: solitaire_server/Dockerfile
+    image: solitaire-quest-server:latest
+    restart: unless-stopped
+    ports:
+      - "${SERVER_PORT:-8080}:8080"
+    volumes:
+      # SQLite database persisted outside the container.
+      - db-data:/app/data
+    environment:
+      DATABASE_URL: sqlite:///app/data/sol.db
+      JWT_SECRET: ${JWT_SECRET}
+      SERVER_PORT: 8080
+    healthcheck:
+      test: ["CMD", "wget", "-qO-", "http://localhost:8080/health"]
+      interval: 30s
+      timeout: 5s
+      retries: 3
+      start_period: 10s
+
+volumes:
+  db-data: