ci: prune stale cargo artifacts before cache save

Install cargo-sweep in integration and package workflows, then run `cargo sweep -t 7` so stale target artifacts are removed before rust-cache is archived.

Made-with: Cursor

Author: luoluoyuyu

.github/workflows/integration-test.yml

@@ -68,6 +68,12 @@ jobs:
       - name: Run Integration Tests
         run: make integration-test
 
+      - name: Install cargo-sweep
+        run: cargo install cargo-sweep --locked
+
+      - name: Prune stale Cargo artifacts
+        run: cargo sweep -t 7
+
       - name: Upload Test Logs
         if: failure()
         uses: actions/upload-artifact@v4

.github/workflows/verify-package.yml

@@ -79,6 +79,12 @@ jobs:
       - name: Build & Package (Lite)
         run: make dist-lite
 
+      - name: Install cargo-sweep
+        run: cargo install cargo-sweep --locked
+
+      - name: Prune stale Cargo artifacts
+        run: cargo sweep -t 7
+
       - name: Verify Artifacts
         run: |
           ls -lh dist/*.tar.gz dist/*.zip