Initial commit: Gaming Hub foundation

Plugin-based Discord bot framework with web frontend:
- Core: Discord.js client, SSE broadcast, JSON persistence
- Plugin system: lifecycle hooks (init, onReady, routes, snapshot, destroy)
- Web: React 19 + Vite 6 + TypeScript, tab-based navigation
- Docker: multi-stage build (Node 24, static ffmpeg, yt-dlp)
- GitLab CI: Kaniko with LAN registry caching

Ready for plugin development.

.gitlab-ci.yml

@@ -0,0 +1,63 @@
+stages:
+  - build
+
+variables:
+  INTERNAL_REGISTRY: "10.10.10.10:9080"
+  IMAGE_NAME: "$INTERNAL_REGISTRY/$CI_PROJECT_PATH"
+  CI_SERVER_URL: "http://10.10.10.10:9080"
+  GITLAB_FEATURES: ""
+
+docker-build:
+  stage: build
+  image:
+    name: gcr.io/kaniko-project/executor:v1.23.2-debug
+    entrypoint: [""]
+  rules:
+    - if: $CI_PIPELINE_SOURCE == "push" && $CI_COMMIT_BRANCH
+  before_script:
+    - mkdir -p /kaniko/.docker
+    - |
+      cat > /kaniko/.docker/config.json <<EOF
+      {
+        "auths": {
+          "$INTERNAL_REGISTRY": {
+            "username": "$CI_REGISTRY_USER",
+            "password": "$CI_REGISTRY_PASSWORD"
+          }
+        }
+      }
+      EOF
+  script:
+    - |
+      if [ "$CI_COMMIT_REF_NAME" = "main" ]; then
+        TAG="main"
+        VERSION="1.0.0"
+        CHANNEL="stable"
+      elif [ "$CI_COMMIT_REF_NAME" = "feature/nightly" ] || [ "$CI_COMMIT_REF_NAME" = "nightly" ]; then
+        TAG="nightly"
+        VERSION="1.0.0-nightly"
+        CHANNEL="nightly"
+      else
+        CLEAN_TAG=$(echo "$CI_COMMIT_REF_NAME" | sed 's/\//-/g')
+        TAG="$CLEAN_TAG"
+        VERSION="1.0.0-dev"
+        CHANNEL="dev"
+      fi
+
+      DESTINATIONS="--destination=$IMAGE_NAME:$CI_COMMIT_SHA --destination=$IMAGE_NAME:$TAG"
+      if [ "$CI_COMMIT_REF_NAME" = "main" ]; then
+        DESTINATIONS="$DESTINATIONS --destination=$IMAGE_NAME:latest"
+      fi
+
+      echo "Building for channel $CHANNEL with version $VERSION and tag $TAG"
+      echo "Using registry image: $IMAGE_NAME"
+
+      /kaniko/executor \
+        --context "$CI_PROJECT_DIR" \
+        --dockerfile "$CI_PROJECT_DIR/Dockerfile" \
+        --build-arg "VITE_BUILD_CHANNEL=$CHANNEL" \
+        --build-arg "VITE_APP_VERSION=$VERSION" \
+        --cache=true \
+        --cache-repo="$IMAGE_NAME/cache" \
+        --insecure-registry=$INTERNAL_REGISTRY \
+        $DESTINATIONS