Adjust CI lint workflow caching and binaries reuse

.github/workflows/lint.yml

@@ -44,6 +44,10 @@ jobs:
           restore-keys: ${{ runner.os }}-cargo-
       - name: Build nomos binaries
         run: |
+          if [ "${ACT:-}" = "true" ] && [ -f "${GITHUB_WORKSPACE}/nomos-binaries.tar.gz" ]; then
+            # Reuse previously built tar without rebuilding.
+            exit 0
+          fi
           SRC_DIR="${GITHUB_WORKSPACE}/.tmp/nomos-node-src"
           mkdir -p "$SRC_DIR"
           if [ ! -d "$SRC_DIR/.git" ]; then
@@ -63,10 +67,16 @@ jobs:
           cp "${CARGO_TARGET_DIR}/debug/nomos-cli" artifacts/
           tar -czf nomos-binaries.tar.gz -C artifacts .
       - uses: actions/upload-artifact@v4
-        if: env.ACT != 'true'
         with:
           name: nomos-binaries-linux-amd64
           path: nomos-binaries.tar.gz
+        continue-on-error: ${{ env.ACT == 'true' }}
+      - name: Persist binaries for act
+        if: env.ACT == 'true'
+        run: |
+          if [ ! -f "${GITHUB_WORKSPACE}/nomos-binaries.tar.gz" ]; then
+            cp nomos-binaries.tar.gz "${GITHUB_WORKSPACE}/nomos-binaries.tar.gz"
+          fi
 
   fmt:
     runs-on: ubuntu-latest
@@ -222,30 +232,24 @@ jobs:
           key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
           restore-keys: ${{ runner.os }}-cargo-
       - name: Build nomos binaries (act fallback)
-        if: env.ACT == 'true' && ! (startsWith(github.event_name, 'workflow_dispatch') && hashFiles('nomos-binaries.tar.gz') != '')
+        if: env.ACT == 'true' && hashFiles(format('{0}/nomos-binaries/nomos-binaries.tar.gz', runner.temp)) == ''
         run: |
-          if [ -f "${GITHUB_WORKSPACE}/nomos-binaries.tar.gz" ]; then
+          SRC_DIR="${RUNNER_TEMP}/nomos-node-src"
-            mkdir -p "${RUNNER_TEMP}/nomos-binaries"
+          mkdir -p "$SRC_DIR"
-            cp "${GITHUB_WORKSPACE}/nomos-binaries.tar.gz" "${RUNNER_TEMP}/"
+          if [ ! -d "$SRC_DIR/.git" ]; then
-            tar -xzf "${RUNNER_TEMP}/nomos-binaries.tar.gz" -C "${RUNNER_TEMP}/nomos-binaries"
+            git clone https://github.com/logos-co/nomos-node.git "$SRC_DIR"
-          else
-            SRC_DIR="${RUNNER_TEMP}/nomos-node-src"
-            mkdir -p "$SRC_DIR"
-            if [ ! -d "$SRC_DIR/.git" ]; then
-              git clone https://github.com/logos-co/nomos-node.git "$SRC_DIR"
-            fi
-            cd "$SRC_DIR"
-            git fetch --depth 1 origin 2f60a0372c228968c3526c341ebc7e58bbd178dd
-            git checkout 2f60a0372c228968c3526c341ebc7e58bbd178dd
-            git reset --hard
-            git clean -fdx
-            cargo +nightly-2025-09-14 build --all-features -p nomos-node -p nomos-executor -p nomos-cli
-            mkdir -p "${RUNNER_TEMP}/nomos-binaries"
-            cp "${CARGO_TARGET_DIR:-${RUNNER_TEMP}/target-local}/debug/nomos-node" "${RUNNER_TEMP}/nomos-binaries/"
-            cp "${CARGO_TARGET_DIR:-${RUNNER_TEMP}/target-local}/debug/nomos-executor" "${RUNNER_TEMP}/nomos-binaries/"
-            cp "${CARGO_TARGET_DIR:-${RUNNER_TEMP}/target-local}/debug/nomos-cli" "${RUNNER_TEMP}/nomos-binaries/"
-            tar -czf "${RUNNER_TEMP}/nomos-binaries.tar.gz" -C "${RUNNER_TEMP}/nomos-binaries" .
           fi
+          cd "$SRC_DIR"
+          git fetch --depth 1 origin 2f60a0372c228968c3526c341ebc7e58bbd178dd
+          git checkout 2f60a0372c228968c3526c341ebc7e58bbd178dd
+          git reset --hard
+          git clean -fdx
+          cargo +nightly-2025-09-14 build --all-features -p nomos-node -p nomos-executor -p nomos-cli
+          mkdir -p "${RUNNER_TEMP}/nomos-binaries"
+          cp "${CARGO_TARGET_DIR:-${RUNNER_TEMP}/target-local}/debug/nomos-node" "${RUNNER_TEMP}/nomos-binaries/"
+          cp "${CARGO_TARGET_DIR:-${RUNNER_TEMP}/target-local}/debug/nomos-executor" "${RUNNER_TEMP}/nomos-binaries/"
+          cp "${CARGO_TARGET_DIR:-${RUNNER_TEMP}/target-local}/debug/nomos-cli" "${RUNNER_TEMP}/nomos-binaries/"
+          tar -czf "${RUNNER_TEMP}/nomos-binaries.tar.gz" -C "${RUNNER_TEMP}/nomos-binaries" .
       - name: Download prebuilt nomos binaries
         if: env.ACT != 'true'
         uses: actions/download-artifact@v4
@@ -256,11 +260,22 @@ jobs:
         if: env.ACT == 'true'
         run: |
           mkdir -p "${RUNNER_TEMP}/nomos-binaries"
-          tar -xzf "${RUNNER_TEMP}/nomos-binaries.tar.gz" -C "${RUNNER_TEMP}/nomos-binaries"
+          if [ -f "${RUNNER_TEMP}/nomos-binaries.tar.gz" ]; then
+            cp "${RUNNER_TEMP}/nomos-binaries.tar.gz" "${RUNNER_TEMP}/nomos-binaries/nomos-binaries.tar.gz"
+            tar -xzf "${RUNNER_TEMP}/nomos-binaries.tar.gz" -C "${RUNNER_TEMP}/nomos-binaries"
+          elif [ -f "${GITHUB_WORKSPACE}/nomos-binaries.tar.gz" ]; then
+            cp "${GITHUB_WORKSPACE}/nomos-binaries.tar.gz" "${RUNNER_TEMP}/nomos-binaries/"
+            tar -xzf "${GITHUB_WORKSPACE}/nomos-binaries.tar.gz" -C "${RUNNER_TEMP}/nomos-binaries"
+          else
+            echo "nomos-binaries.tar.gz not found" >&2
+            exit 1
+          fi
       - name: Install nomos binaries
         run: |
           BIN_DIR="${RUNNER_TEMP}/nomos-binaries"
-          tar -xzf "${BIN_DIR}/nomos-binaries.tar.gz" -C "${BIN_DIR}"
+          if [ -f "${BIN_DIR}/nomos-binaries.tar.gz" ]; then
+            tar -xzf "${BIN_DIR}/nomos-binaries.tar.gz" -C "${BIN_DIR}"
+          fi
           sudo cp "${BIN_DIR}/nomos-node" /usr/local/bin/
           sudo cp "${BIN_DIR}/nomos-executor" /usr/local/bin/
           sudo cp "${BIN_DIR}/nomos-cli" /usr/local/bin/
@@ -273,6 +288,8 @@ jobs:
           mkdir -p testing-framework/assets/stack/kzgrs_test_params
           rsync -a --delete "$NOMOS_CIRCUITS"/ testing-framework/assets/stack/kzgrs_test_params/ || true
       - name: Run local runner smoke (ignored test)
+        env:
+          LOCAL_DEMO_RUN_SECS: ${{ env.ACT == 'true' && '20' || env.LOCAL_DEMO_RUN_SECS }}
         run: |
           cargo +nightly-2025-09-14 test -p runner-examples --test local_runner_bin_smoke -- --ignored --nocapture
 
@@ -301,7 +318,15 @@ jobs:
         if: env.ACT == 'true'
         run: |
           mkdir -p "${RUNNER_TEMP}/nomos-binaries"
-          tar -xzf "${RUNNER_TEMP}/nomos-binaries.tar.gz" -C "${RUNNER_TEMP}/nomos-binaries"
+          if [ -f "${RUNNER_TEMP}/nomos-binaries.tar.gz" ]; then
+            tar -xzf "${RUNNER_TEMP}/nomos-binaries.tar.gz" -C "${RUNNER_TEMP}/nomos-binaries"
+          elif [ -f "${GITHUB_WORKSPACE}/nomos-binaries.tar.gz" ]; then
+            cp "${GITHUB_WORKSPACE}/nomos-binaries.tar.gz" "${RUNNER_TEMP}/nomos-binaries/"
+            tar -xzf "${GITHUB_WORKSPACE}/nomos-binaries.tar.gz" -C "${RUNNER_TEMP}/nomos-binaries"
+          else
+            echo "nomos-binaries.tar.gz not found" >&2
+            exit 1
+          fi
       - name: Stage nomos binaries into build context
         run: |
           BIN_DIR="${RUNNER_TEMP}/nomos-binaries"