Update all packaging manifests to v5.3.6, add Scoop + Docker

- AUR PKGBUILD: v5.3.6, new asset URLs, verified SHA256
- Chocolatey: v5.3.6 nuspec + install script with new zip URL/hash
- Winget: v5.3.6 multi-file manifest format
- Nix: v5.3.6 derivation with updated fetchurl hashes
- RPM: v5.3.6 spec + build script with new binary names
- Debian: v5.3.6 control + build script
- AppImage: v5.3.6 build script with new download URL
- Scoop: new bucket manifest (JSON) for Windows
- Docker: new Dockerfile + docker-compose for headless node

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

packaging/docker/docker-compose.yml

@@ -0,0 +1,17 @@
+version: "3.8"
+
+services:
+  trianglesd:
+    build: .
+    image: cryptographic-triangles/trianglesd:5.3.6
+    container_name: trianglesd
+    restart: unless-stopped
+    ports:
+      - "24112:24112"
+      - "19112:19112"
+    volumes:
+      - triangles-data:/home/triangles/.triangles
+    command: ["-daemon=0", "-printtoconsole", "-rpcallowip=172.16.0.0/12"]
+
+volumes:
+  triangles-data: