ci: build the Rust worker for the container images

The same native cross-compile the volume server uses, so the release, latest
and dev images all carry it on amd64 and arm64. The artifact holds both
binaries now, so it is named for that rather than for the volume server.

Only the release directory each job builds is cached: with a debug profile
beside it the worker's target/ reaches 24GB, against a 10GB cache budget.

Claude-Session: https://claude.ai/code/session_01Rkp1Mw5E89Jp6dzJFYiMrm

.github/workflows/container_dev.yml

@@ -6,6 +6,7 @@ on:
     paths:
       - 'weed/**'
       - 'seaweed-volume/**'
+      - 'seaweed-worker/**'
       - 'docker/**'
       - 'go.mod'
       - 'go.sum'
@@ -16,7 +17,7 @@ permissions:
 
 jobs:
 
-  # ── Pre-build Rust volume server binaries natively ──────────────────
+  # ── Pre-build the Rust binaries natively ────────────────────────────
   build-rust-binaries:
     runs-on: ubuntu-22.04
     strategy:
@@ -55,7 +56,8 @@ jobs:
             ~/.cargo/registry
             ~/.cargo/git
             seaweed-volume/target
-          key: rust-docker-dev-${{ matrix.target }}-${{ hashFiles('seaweed-volume/Cargo.lock') }}
+            seaweed-worker/target/${{ matrix.target }}/release
+          key: rust-docker-dev-${{ matrix.target }}-${{ hashFiles('seaweed-volume/Cargo.lock', 'seaweed-worker/Cargo.lock') }}
           restore-keys: |
             rust-docker-dev-${{ matrix.target }}-
 
@@ -67,11 +69,19 @@ jobs:
           cargo build --release --target ${{ matrix.target }} --no-default-features
           cp target/${{ matrix.target }}/release/weed-volume ../weed-volume-normal-${{ matrix.arch }}
 
+      - name: Build the Rust maintenance worker
+        run: |
+          cd seaweed-worker
+          cargo build --release -p weed-lance-worker --target ${{ matrix.target }}
+          cp target/${{ matrix.target }}/release/weed-worker ../weed-worker-${{ matrix.arch }}
+
       - name: Upload artifacts
         uses: actions/upload-artifact@v7
         with:
-          name: rust-volume-${{ matrix.arch }}
-          path: weed-volume-normal-${{ matrix.arch }}
+          name: rust-bins-${{ matrix.arch }}
+          path: |
+            weed-volume-normal-${{ matrix.arch }}
+            weed-worker-${{ matrix.arch }}
 
   build-dev-containers:
     needs: [build-rust-binaries]
@@ -84,7 +94,7 @@ jobs:
       - name: Download pre-built Rust binaries
         uses: actions/download-artifact@v8
         with:
-          pattern: rust-volume-*
+          pattern: rust-bins-*
           merge-multiple: true
           path: ./rust-bins
 
@@ -98,7 +108,16 @@ jobs:
               echo "Placed pre-built Rust binary for ${arch}"
             fi
           done
+          mkdir -p docker/weed-worker-prebuilt
+          for arch in amd64 arm64; do
+            src="./rust-bins/weed-worker-${arch}"
+            if [ -f "$src" ]; then
+              cp "$src" "docker/weed-worker-prebuilt/weed-worker-${arch}"
+              echo "Placed pre-built Rust worker for ${arch}"
+            fi
+          done
           ls -la docker/weed-volume-prebuilt/
+          ls -la docker/weed-worker-prebuilt/
 
       - name: Docker meta
         id: docker_meta