refactor: Use separate .env.modern and .env.legacy files

- Remove base-legacy.yml and base-modern.yml (YAML anchors don't work with include)
- Make all compose files self-contained
- Add .env.modern (8G RAM, 4 CPU) for Win 10/11, Server 2016+
- Add .env.legacy (2G RAM, 2 CPU) for older systems
- Update README and .env.example documentation

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

compose/tiny/tiny11.yml

@@ -1,16 +1,20 @@
-include:
-  - ../base-legacy.yml
-
 services:
   tiny11:
-    <<: *legacy
+    image: dockurr/windows
     container_name: tiny11
-    env_file: ../../.env
+    env_file: ../../.env.legacy
     environment:
       VERSION: "tiny11"
+    devices:
+      - /dev/kvm
+      - /dev/net/tun
+    cap_add:
+      - NET_ADMIN
     ports:
       - 8111:8006
       - 3111:3389/tcp
       - 3111:3389/udp
     volumes:
       - ../../data/tiny11:/storage
+    restart: unless-stopped
+    stop_grace_period: 2m