Simplify and optimize CI/CD workflows

- Consolidate into 2 workflows: ci.yml (tests) and release.yml (deploy)
- Build Docker images in parallel (amd64 + arm64 separate jobs)
- Use per-arch caching for faster subsequent builds
- Remove redundant build.yml and goreleaser.yml

Author: rajsinghtech

.github/workflows/build.yml

@@ -0,0 +1,77 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  lint-frontend:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+          cache-dependency-path: frontend/package-lock.json
+
+      - name: Install dependencies
+        working-directory: ./frontend
+        run: npm ci
+
+      - name: Lint
+        working-directory: ./frontend
+        run: npm run lint
+
+      - name: Type check
+        working-directory: ./frontend
+        run: npm run type-check
+
+  test-backend:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: '1.24'
+          cache-dependency-path: backend/go.sum
+
+      - name: Test
+        working-directory: ./backend
+        run: go test -tags exclude_frontend ./...
+
+      - name: Vet
+        working-directory: ./backend
+        run: go vet -tags exclude_frontend ./...
+
+  build:
+    runs-on: ubuntu-latest
+    needs: [lint-frontend, test-backend]
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+          cache-dependency-path: frontend/package-lock.json
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: '1.24'
+          cache-dependency-path: backend/go.sum
+
+      - name: Build frontend
+        working-directory: ./frontend
+        run: npm ci && npm run build
+
+      - name: Build backend
+        working-directory: ./backend
+        run: go build -o tsflow ./main.go
+
+      - name: Verify binary
+        run: ./backend/tsflow --help || true