Reduce local smoke disk usage

.github/workflows/lint.yml

@@ -131,6 +131,10 @@ jobs:
       LOCAL_DEMO_VALIDATORS: 1
       LOCAL_DEMO_EXECUTORS: 1
       NOMOS_CIRCUITS: ${{ github.workspace }}/.tmp/nomos-circuits
+      CARGO_TARGET_DIR: ${{ runner.temp }}/target-local
+      CARGO_INCREMENTAL: 0
+      CARGO_PROFILE_DEV_DEBUG: 0
+      RUSTFLAGS: -C debuginfo=0
     steps:
       - uses: actions/checkout@v4
       - name: Set temp dir
@@ -157,9 +161,8 @@ jobs:
           path: |
             ~/.cargo/registry
             ~/.cargo/git
-            target
-          key: ${{ runner.os }}-target-local-smoke-${{ hashFiles('**/Cargo.lock') }}-nightly-2025-09-14
-          restore-keys: ${{ runner.os }}-target-local-smoke-
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: ${{ runner.os }}-cargo-
       - name: Build local binaries (nomos-node/executor)
         run: |
           SRC_DIR="${TMPDIR:-/tmp}/nomos-node-src"