feat(bsv): add exact scheme support for BSV

.github/workflows/publish_npm_scoped_x402_bsv.yml

@@ -0,0 +1,49 @@
+name: Publish @x402/bsv package to NPM
+
+on:
+  workflow_dispatch:
+
+jobs:
+  publish-npm-x402-bsv:
+    if: github.repository == 'x402-foundation/x402' && github.ref == 'refs/heads/main'
+    runs-on: ubuntu-latest
+    environment: npm
+    permissions:
+      contents: read
+      id-token: write
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+
+      - name: Setup pnpm
+        uses: pnpm/action-setup@0e279bb959325dab635dd2c09392533439d90093 # v6.0.8
+        with:
+          version: 11.1.1
+
+      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
+        with:
+          node-version: "24"
+          registry-url: "https://registry.npmjs.org"
+
+      - name: Update npm for OIDC trusted publishing
+        run: npm install -g npm@11.14.1 --ignore-scripts
+
+      - name: Configure npm for trusted publishing
+        run: npm config delete always-auth 2>/dev/null || true
+
+      - name: Install and build
+        working-directory: ./typescript
+        run: |
+          pnpm install --frozen-lockfile --ignore-scripts
+          pnpm -r --filter=@x402/core --filter=@x402/bsv run build
+
+      - name: Publish @x402/bsv package
+        working-directory: ./typescript/packages/mechanisms/bsv
+        run: |
+          # Get package information directly
+          PACKAGE_NAME=$(node -p "require('./package.json').name")
+          PACKAGE_VERSION=$(node -p "require('./package.json').version")
+
+          echo "Package: $PACKAGE_NAME@$PACKAGE_VERSION"
+
+          echo "Publishing to NPM (main branch)"
+          pnpm publish --provenance --access public

examples/typescript/clients/advanced/README.md

@@ -42,6 +42,7 @@ and fill required environment variables:
 - `CARDANO_NETWORK` - Cardano network (optional, defaults to `cardano:preprod`)
 - `BLOCKFROST_PREPROD_URL` / `BLOCKFROST_PROJECT_ID` - Blockfrost endpoint + project id (required when `CARDANO_MNEMONIC` is set)
 - `APTOS_PRIVATE_KEY` - Aptos Ed25519 private key for Aptos payments (optional; `all-networks`)
+- `BSV_WALLET` - set to `true` to pay via a running BRC-100 wallet, e.g. BSV Desktop (optional; `all-networks`; BSV payers use a wallet connection instead of a raw private key)
 - `CCD_PRIVATE_KEY` - Concordium Ed25519 private key for Concordium payments (optional; `all-networks`)
 - `CCD_ADDRESS` - Concordium account address for Concordium payments (optional; `all-networks`)
 - `EVM_PRIVATE_KEY` - Ethereum private key for EVM payments