ci: add path filter for intense test (#1320)

**Motivation:**

not every commit or code change need a 2h intense test, only solidity
and workflow config changes need

**Modifications:**

add path filter for intense test

**Result:**

only solidity and workflow config changes will trigger intense test

Author: bowenli86

.github/workflows/foundry-post-merge.yml

@@ -0,0 +1,64 @@
+name: Foundry Post Merge
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+    paths:
+      - '.github/workflows/foundry-post-merge.yml'
+      - 'src/**'
+      - 'lib/**'
+      - 'foundry.toml'
+      - '**/*.sol'
+
+
+env:
+  FOUNDRY_PROFILE: medium
+
+jobs:
+  # -----------------------------------------------------------------------
+  # Forge Test (Intense)
+  # -----------------------------------------------------------------------
+
+  continuous-fuzzing:
+    name: Test (Intense)
+    runs-on: protocol-x64-16core
+    strategy:
+      fail-fast: true
+    steps:
+      # Check out repository with all submodules for complete codebase access.
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      # Restore Forge cache
+      - name: Cache Forge Build
+        uses: actions/cache@v3
+        with:
+          path: |
+            cache/
+            out/
+          key: ${{ runner.os }}-forge-${{ hashFiles('**/foundry.toml', '**/remappings.txt', 'src/**/*.sol', 'lib/**/*.sol') }}
+          restore-keys: |
+            ${{ runner.os }}-forge-
+
+      # Install the Foundry toolchain.
+      - name: "Install Foundry"
+        uses: foundry-rs/foundry-toolchain@v1
+        with:
+          version: stable
+
+      # Build the project and display contract sizes.
+      - name: "Forge Build"
+        run: |
+          forge --version
+          forge build --sizes
+        id: build
+
+      # Run Forge Test (Intense)
+      - name: Forge Test (Intense)
+        run: |
+          echo -e "\033[1;33mWarning: This workflow may take several hours to complete.\033[0m"
+          echo -e "\033[1;33mThis intense fuzzing workflow is optional but helps catch edge cases through extended testing.\033[0m"
+          FOUNDRY_PROFILE=intense forge test -vvv

.github/workflows/foundry.yml

@@ -71,54 +71,6 @@ jobs:
           FOUNDRY_PROFILE: ${{ matrix.suite == 'Fork' && 'forktest' || 'medium' }}
           RPC_MAINNET: https://billowing-capable-sound.quiknode.pro/
 
-  # -----------------------------------------------------------------------
-  # Forge Test (Intense)
-  # -----------------------------------------------------------------------
-
-  continuous-fuzzing:
-    name: Test (Intense)
-    runs-on: protocol-x64-16core
-    # Only run on push events to main branch, not on PR events
-    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
-    strategy:
-      fail-fast: true
-    steps:
-      # Check out repository with all submodules for complete codebase access.
-      - uses: actions/checkout@v4
-        with:
-          submodules: recursive
-
-      # Restore Forge cache
-      - name: Cache Forge Build
-        uses: actions/cache@v3
-        with:
-          path: |
-            cache/
-            out/
-          key: ${{ runner.os }}-forge-${{ hashFiles('**/foundry.toml', '**/remappings.txt', 'src/**/*.sol', 'lib/**/*.sol') }}
-          restore-keys: |
-            ${{ runner.os }}-forge-
-
-      # Install the Foundry toolchain.
-      - name: "Install Foundry"
-        uses: foundry-rs/foundry-toolchain@v1
-        with:
-          version: stable
-
-      # Build the project and display contract sizes.
-      - name: "Forge Build"
-        run: |
-          forge --version
-          forge build --sizes
-        id: build
-
-      # Run Forge Test (Intense)
-      - name: Forge Test (Intense)
-        run: |
-          echo -e "\033[1;33mWarning: This workflow may take several hours to complete.\033[0m"
-          echo -e "\033[1;33mThis intense fuzzing workflow is optional but helps catch edge cases through extended testing.\033[0m"
-          FOUNDRY_PROFILE=intense forge test -vvv
-
   # -----------------------------------------------------------------------
   # Forge Storage Diff
   # -----------------------------------------------------------------------