Fix docs only CI job processing

.github/workflows/ValidatePullRequest.yml

@@ -5,30 +5,59 @@ name: Validate Pull Request
 on:
   pull_request:
     branches: [main, "release/**"]
-    paths-ignore:
-      - '**.md'
-      - '**.txt'
   merge_group:
 
 permissions:
   id-token: write
   contents: read
 
 jobs:
+  docs-pr:
+    runs-on: ubuntu-latest
+    outputs:
+      docs-only: ${{ steps.docs-only.outputs.result }}
+    steps:
+      - uses: dorny/paths-filter@v3
+        id: changes
+        with:
+          filters: |
+            docs:
+              - '**/*.md'
+              - '**/*.txt'
+            all:
+              - '**/*'
+      - uses: actions/github-script@v7
+        id: docs-only
+        with:
+          script: |
+            let docs_file_count = ${{steps.changes.outputs.docs_count}};
+            let all_file_count = ${{steps.changes.outputs.all_count}};
+            return all_file_count === docs_file_count;
+          result-encoding: string
 
   rust:
+    needs:
+      - docs-pr
     uses: ./.github/workflows/dep_rust.yml
     secrets: inherit
+    with: 
+      docs_only: ${{needs.docs-pr.outputs.docs-only}}
   fuzzing:
+    needs:
+      - docs-pr
     uses: ./.github/workflows/dep_fuzzing.yml
     with:
       max_total_time: 300 # 5 minutes in seconds
+      docs_only: ${{needs.docs-pr.outputs.docs-only}}
     secrets: inherit
 
   #####
   # start build-on-windows
   #####
   build-on-windows:
+    needs:
+      - docs-pr
+    if: ${{needs.docs-pr.outputs.docs-only != 'true'}}
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: true
@@ -72,6 +101,9 @@ jobs:
   # start build-on-linux
   #####
   build-on-linux:
+    needs:
+      - docs-pr
+    if: ${{needs.docs-pr.outputs.docs-only != 'true'}}
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: true

.github/workflows/dep_fuzzing.yml

@@ -7,13 +7,19 @@ on:
         description: Maximum total time for the fuzz run in seconds
         required: true
         type: number
+      docs_only:
+        description: Skip fuzzing if docs only
+        required: false
+        type: string
+        default: "false"
 
 permissions:
   id-token: write
   contents: read
 
 jobs:
   fuzz:
+    if: ${{ inputs.docs_only == 'false' }}
     runs-on: [ self-hosted, Linux, X64, "1ES.Pool=hld-kvm-amd" ]
     steps:
       - name: Checkout code

.github/workflows/dep_rust.yml

@@ -5,6 +5,12 @@ name: Rust Tests and Lints
 # See README.md in this directory for more information about workflow_call
 on:
   workflow_call:
+    inputs:
+      docs_only:
+        description: Skip building if docs only
+        required: false
+        type: string
+        default: "false"
 
 env:
   CARGO_TERM_COLOR: always
@@ -16,6 +22,7 @@ permissions:
 
 jobs:
   build:
+    if: ${{ inputs.docs_only == 'false' }}
     strategy:
       fail-fast: true
       matrix: