Add repository-local tutorial agent skills (#218)

* Add repository-local tutorial agent skills

* Enforce tutorial writer safety boundaries

* Reduce trace verifier complexity

* Add cross-model tutorial writing review

* Refresh apt metadata in libbpf CI

* Split tutorial workflow and writing style skills

* Check complete tutorial source blocks

* Harden the tutorial writing workflow

* Refactor source block validation

* Close tutorial workflow isolation gaps

* Test the isolated writer trace verifier

* Keep complete-source synchronization byte exact

* Separate tutorial and Skill review gates

* Simplify the tutorial writing workflow

* Keep tutorial source and explanations together

* Keep public tutorial references self-contained

* Restore tutorial checker executable bits

* Refine tutorial writing workflow

* Prefer positive tutorial prose

* Add diagram guidance to tutorial skills

* Standardize tutorial source links

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Co-authored-by: LinuxDev9002 <i@littlefisher.me>

.github/workflows/check-docs.yml

@@ -14,7 +14,9 @@ jobs:
     steps:
       - uses: actions/checkout@v7
       - name: Test documentation scripts
-        run: python3 -m unittest scripts.test_check_internal_links scripts.test_generate_toc scripts.test_generate_compatibility
+        run: |
+          python3 -m unittest scripts.test_check_internal_links scripts.test_generate_toc scripts.test_generate_compatibility
+          python3 .agents/skills/write-bpf-production-tutorial/scripts/test_sync_source_blocks.py
       - name: Regenerate documentation indexes
         run: |
           python3 scripts/generate_toc.py

.github/workflows/test-libbpf.yml

@@ -20,6 +20,7 @@ jobs:
         submodules: 'recursive'
     - name: install deps
       run: |
+        sudo apt-get update
         sudo apt-get install -y --no-install-recommends \
         libelf1 libelf-dev zlib1g-dev \
         make git clang llvm pkg-config build-essential dwarves \