Migrate to Cloudflare Pages and add CI/CD

- Migrate from Workers Sites to Cloudflare Pages
- Add _headers for WASM SharedArrayBuffer support
- Remove legacy workers-site configuration
- Add GitHub Actions CI/CD workflow
- Update project name to 'evo'
- Format Rust code

Author: rgilks

.github/workflows/ci-cd.yml

@@ -0,0 +1,86 @@
+name: CI/CD
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  check:
+    name: Check & Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt, clippy
+
+      - name: Install wasm32 target
+        run: rustup target add wasm32-unknown-unknown
+
+      - name: Cache Cargo
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+            target/
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-
+
+      - name: Check formatting
+        run: cargo fmt --check
+
+      - name: Run clippy
+        run: cargo clippy -- -D warnings
+
+      - name: Run tests
+        run: cargo test
+
+      - name: Check WASM build
+        run: cargo check --target wasm32-unknown-unknown
+
+  deploy:
+    name: Deploy
+    runs-on: ubuntu-latest
+    needs: check
+    if: github.ref == 'refs/heads/main' && github.event_name == 'push'
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Install wasm32 target
+        run: rustup target add wasm32-unknown-unknown
+
+      - name: Install wasm-pack
+        run: curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build
+        run: npm run build:web
+
+      - name: Deploy to Cloudflare Pages
+        uses: cloudflare/wrangler-action@v3
+        with:
+          apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+          accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
+          command: pages deploy web --project-name=evo