feat: initial SleepGuard implementation

Wake-on-demand proxy + agent system with SvelteKit dashboard.
Monorepo: shared types, proxy (Hono + http-proxy), agent (monitors + locks), web (SvelteKit SPA).

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

compose.yaml

@@ -0,0 +1,31 @@
+services:
+  proxy:
+    build:
+      context: .
+      dockerfile: packages/proxy/Dockerfile
+    ports:
+      - "47391:47391"
+    env_file:
+      - .env
+    restart: unless-stopped
+
+  agent:
+    build:
+      context: .
+      dockerfile: packages/agent/Dockerfile
+    ports:
+      - "48527:48527"
+    env_file:
+      - .env
+    # GPU passthrough for nvidia-smi
+    deploy:
+      resources:
+        reservations:
+          devices:
+            - driver: nvidia
+              count: all
+              capabilities: [gpu]
+    # Access to /proc/diskstats for disk I/O monitoring
+    volumes:
+      - /proc/diskstats:/proc/diskstats:ro
+    restart: unless-stopped