feat: add TRON substreams for ERC20FeeProxy payment detection

.env.example

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+# Streamingfast API Token
+# Get from: https://app.streamingfast.io/
+SUBSTREAMS_API_TOKEN=your-streamingfast-api-token
+
+# PostgreSQL Password (for local development)
+POSTGRES_PASSWORD=changeme
+
+# PostgreSQL Port (optional, defaults to 5432)
+# Use a different port if 5432 is already in use
+POSTGRES_PORT=5433

.env.prod.example

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+# Production Environment Variables for Easypanel
+# Copy this to .env.prod and fill in the values
+
+# PostgreSQL connection (from Easypanel's built-in PostgreSQL service)
+POSTGRES_HOST=your-project-postgres.internal
+POSTGRES_PORT=5432
+POSTGRES_DB=tron_payments
+POSTGRES_USER=postgres
+POSTGRES_PASSWORD=your-secure-password-here
+
+# Streamingfast API Token
+# Get from: https://app.streamingfast.io/
+SUBSTREAMS_API_TOKEN=your-streamingfast-api-token

.github/workflows/deploy-to-production.yml

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+name: Deploy to production
+
+on:
+  workflow_dispatch:
+  release:
+    types: [published]
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Webhook request
+        run: |
+          curl -X GET https://prod.request.network/api/deploy/${{ secrets.EASYPANEL_DEPLOY_KEY_PRODUCTION }}

.github/workflows/deploy-to-staging.yml

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+name: Deploy to staging
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [main]
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Webhook request
+        run: |
+          curl -X GET https://stage.request.network/api/deploy/${{ secrets.EASYPANEL_DEPLOY_KEY_STAGING }}

.github/workflows/tron-build.yml

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+name: Tron Substreams Build
+
+on:
+  pull_request:
+    branches:
+      - main
+    paths:
+      - 'tron/**'
+      - '.github/workflows/tron-build.yml'
+  push:
+    branches:
+      - main
+    paths:
+      - 'tron/**'
+      - '.github/workflows/tron-build.yml'
+  workflow_dispatch:
+    inputs:
+      run_integration_tests:
+        description: 'Run integration tests against live endpoints'
+        required: false
+        default: false
+        type: boolean
+      publish_package:
+        description: 'Build and publish package artifact'
+        required: false
+        default: false
+        type: boolean
+
+jobs:
+  build-and-test:
+    name: Build and Test Tron Substreams
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: wasm32-unknown-unknown
+
+      - name: Cache Cargo dependencies
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+            tron/target/
+          key: ${{ runner.os }}-cargo-${{ hashFiles('tron/Cargo.toml') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-
+
+      - name: Build WASM module
+        working-directory: tron
+        run: make build
+
+      - name: Run unit tests
+        working-directory: tron
+        run: make test
+
+      - name: Verify build artifacts
+        working-directory: tron
+        run: |
+          echo "Checking build artifacts..."
+          if [ ! -f "target/wasm32-unknown-unknown/release/request_network_tron.wasm" ]; then
+            echo "ERROR: WASM file not found!"
+            exit 1
+          fi
+          echo "Build artifacts verified successfully"
+
+  integration-test-mainnet:
+    name: Integration Test (Mainnet)
+    runs-on: ubuntu-latest
+    needs: build-and-test
+    # Run on: push to main (merge) or manual trigger
+    # PRs only run unit tests (no API key needed)
+    if: |
+      github.event.inputs.run_integration_tests == 'true' ||
+      github.event.inputs.publish_package == 'true' ||
+      (github.event_name == 'push' && github.ref == 'refs/heads/main')
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: wasm32-unknown-unknown
+
+      - name: Cache Cargo dependencies
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+            tron/target/
+          key: ${{ runner.os }}-cargo-${{ hashFiles('tron/Cargo.toml') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-
+
+      - name: Install Substreams CLI
+        run: |
+          curl -sSL https://github.com/streamingfast/substreams/releases/latest/download/substreams_linux_x86_64.tar.gz | tar xz
+          sudo mv substreams /usr/local/bin/
+          substreams --version
+
+      - name: Build WASM module
+        working-directory: tron
+        run: make build
+
+      - name: Package Substreams
+        working-directory: tron
+        run: make package
+
+      - name: Verify package created
+        working-directory: tron
+        run: |
+          SPKG_FILE=$(ls -1 *.spkg 2>/dev/null | head -1)
+          if [ -z "$SPKG_FILE" ]; then
+            echo "ERROR: No .spkg package file found!"
+            exit 1
+          fi
+          echo "✅ Package created: $SPKG_FILE"
+
+      - name: Deploy and test against Mainnet (Streamingfast)
+        working-directory: tron
+        env:
+          SUBSTREAMS_API_TOKEN: ${{ secrets.SUBSTREAMS_API_TOKEN }}
+        run: |
+          echo "=== Deploying to TRON Mainnet (Streamingfast) ==="
+          echo "Endpoint: mainnet.tron.streamingfast.io:443"
+          echo "Block range: 79216121 to 79216221 (100 blocks from mainnet deployment)"
+          echo ""
+
+          SPKG_FILE=$(ls -1 *.spkg | head -1)
+          echo "Using package: $SPKG_FILE"
+
+          # Run substreams and capture JSON output
+          if ! substreams run "$SPKG_FILE" map_erc20_fee_proxy_payments \
+            -e mainnet.tron.streamingfast.io:443 \
+            --start-block 79216121 \
+            --stop-block +100 \
+            -o json 2>&1 | tee output_mainnet.log; then
+            echo ""
+            echo "❌ FAILED: Substreams command returned non-zero exit code"
+            echo "Output:"
+            cat output_mainnet.log
+            exit 1
+          fi
+
+          echo ""
+          echo "=== Validating Results ==="
+
+          # If any payments were found, validate the structure
+          if grep -q '"payments"' output_mainnet.log; then
+            echo "✅ Payments data structure detected in output"
+
+            # Extract and validate payment fields if present
+            if grep -q '"token_address"' output_mainnet.log; then
+              echo "✅ Payment fields present: token_address"
+            fi
+            if grep -q '"payment_reference"' output_mainnet.log; then
+              echo "✅ Payment fields present: payment_reference"
+            fi
+            if grep -q '"amount"' output_mainnet.log; then
+              echo "✅ Payment fields present: amount"
+            fi
+          else
+            echo "ℹ️  No payments found in block range (expected if no transactions in these blocks)"
+          fi
+
+          echo ""
+          echo "=== Mainnet Integration Test PASSED ==="
+          echo "The substreams module successfully:"
+          echo "  - Loaded WASM module"
+          echo "  - Connected to TRON Mainnet endpoint via Streamingfast"
+          echo "  - Processed 100 blocks without errors"
+          echo "  - Output valid JSON structure"
+
+  # Publish package artifact for download/deployment
+  publish-package:
+    name: Publish Mainnet Package
+    runs-on: ubuntu-latest
+    needs: [build-and-test, integration-test-mainnet]
+    # Publish on: push to main (merge) or manual publish selection
+    if: |
+      (github.event_name == 'push' && github.ref == 'refs/heads/main') ||
+      github.event.inputs.publish_package == 'true'
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: wasm32-unknown-unknown
+
+      - name: Cache Cargo dependencies
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+            tron/target/
+          key: ${{ runner.os }}-cargo-${{ hashFiles('tron/Cargo.toml') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-
+
+      - name: Install Substreams CLI
+        run: |
+          curl -sSL https://github.com/streamingfast/substreams/releases/latest/download/substreams_linux_x86_64.tar.gz | tar xz
+          sudo mv substreams /usr/local/bin/
+
+      - name: Build WASM module
+        working-directory: tron
+        run: make build
+
+      - name: Package Substreams
+        working-directory: tron
+        run: make package
+
+      - name: Get package info
+        id: package_info
+        working-directory: tron
+        run: |
+          SPKG_FILE=$(ls -1 *.spkg 2>/dev/null | head -1)
+          if [ -z "$SPKG_FILE" ]; then
+            echo "ERROR: No .spkg package file found!"
+            exit 1
+          fi
+          echo "spkg_file=$SPKG_FILE" >> $GITHUB_OUTPUT
+
+          VERSION=$(grep '^version' Cargo.toml | head -1 | sed 's/.*"\(.*\)".*/\1/')
+          echo "version=$VERSION" >> $GITHUB_OUTPUT
+
+          echo "Package created successfully: $SPKG_FILE (version: $VERSION)"
+
+      - name: Upload package artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: request-network-tron-${{ steps.package_info.outputs.version }}
+          path: tron/${{ steps.package_info.outputs.spkg_file }}
+          retention-days: 90
+
+      - name: Package ready for deployment
+        run: |
+          echo "=============================================="
+          echo "📦 Substreams Package Ready"
+          echo "=============================================="
+          echo ""
+          echo "Package: ${{ steps.package_info.outputs.spkg_file }}"
+          echo "Version: ${{ steps.package_info.outputs.version }}"
+          echo "=============================================="

.gitignore

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+# Rust build artifacts
+target/
+
+# Substreams packages (built during Docker/CI)
+*.spkg
+
+# Substreams replay log
+replay.log
+
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Environment
+.env
+.env.local