docs(exex): include code for ExEx book from real files (#11545)

.github/workflows/lint.yml

@@ -30,7 +30,12 @@ jobs:
       - uses: Swatinem/rust-cache@v2
         with:
           cache-on-failure: true
-      - run: cargo clippy --bin "${{ matrix.binary }}" --workspace --features "${{ matrix.network }} asm-keccak jemalloc jemalloc-prof min-error-logs min-warn-logs min-info-logs min-debug-logs min-trace-logs"
+      - name: Run clippy on binaries
+        run: cargo clippy --bin "${{ matrix.binary }}" --workspace --features "${{ matrix.network }} asm-keccak jemalloc jemalloc-prof min-error-logs min-warn-logs min-info-logs min-debug-logs min-trace-logs"
+        env:
+          RUSTFLAGS: -D warnings
+      - name: Run clippy on book binary sources
+        run: cargo clippy --manifest-path book/sources/Cargo.toml --workspace --bins
         env:
           RUSTFLAGS: -D warnings
 
@@ -128,7 +133,10 @@ jobs:
       - uses: dtolnay/rust-toolchain@nightly
         with:
           components: rustfmt
-      - run: cargo fmt --all --check
+      - name: Run fmt
+        run: cargo fmt --all --check
+      - name: Run fmt on book sources
+        run: cargo fmt --manifest-path book/sources/Cargo.toml --all --check
 
   udeps:
     name: udeps

.github/workflows/unit.yml

@@ -42,6 +42,11 @@ jobs:
             --workspace --exclude ef-tests \
             --partition hash:${{ matrix.partition }}/2 \
             -E "!kind(test)"
+      - name: Run tests on book sources
+        run: |
+          cargo nextest run \
+            --manifest-path book/sources/Cargo.toml --workspace \
+            -E "!kind(test)"
 
   state:
     name: Ethereum state tests