feat(backend): locate-anything-cpp (open-vocabulary object detection via ggml) (#10264)

* feat(backend): add locate-anything-cpp backend (open-vocab detection via la_capi)

A Go/purego backend wrapping locate-anything.cpp's la_capi C ABI, implementing
the gRPC Detect RPC: image + open-vocabulary text prompt -> labeled boxes.
Mirrors backend/go/rfdetr-cpp; static-links ggml into a per-CPU-variant .so.

Assisted-by: Claude:claude-opus-4-8 [Claude Code]
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

* ci(backend): register locate-anything-cpp in build matrix

Assisted-by: Claude:claude-opus-4-8 [Claude Code]
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

* feat(gallery): locate-anything gallery entry + model importer

Assisted-by: Claude:claude-opus-4-8 [Claude Code]
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

* test(backend): locate-anything-cpp Load+Detect wire test

Assisted-by: Claude:claude-opus-4-8 [Claude Code]
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

* feat(gallery): add locate-anything-3b model to the gallery index

Assisted-by: Claude:claude-opus-4-8 [Claude Code]
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

* ci(backend): register locate-anything.cpp in bump_deps auto-bump

Assisted-by: Claude:claude-opus-4-8 [Claude Code]
Signed-off-by: mudler <mudler@localai.io>

* ci(test): e2e smoke for locate-anything-cpp in test-extra (loads the 3B + image, runs Detect)

Assisted-by: Claude:claude-opus-4-8 [Claude Code]
Signed-off-by: mudler <mudler@localai.io>

---------

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
Signed-off-by: mudler <mudler@localai.io>
Co-authored-by: mudler <mudler@localai.io>

.github/workflows/bump_deps.yaml

@@ -62,6 +62,10 @@ jobs:
             variable: "RFDETR_VERSION"
             branch: "main"
             file: "backend/go/rfdetr-cpp/Makefile"
+          - repository: "mudler/locate-anything.cpp"
+            variable: "LOCATEANYTHING_VERSION"
+            branch: "master"
+            file: "backend/go/locate-anything-cpp/Makefile"
           - repository: "predict-woo/qwen3-tts.cpp"
             variable: "QWEN3TTS_CPP_VERSION"
             branch: "main"

.github/workflows/test-extra.yml

@@ -38,6 +38,7 @@ jobs:
       acestep-cpp: ${{ steps.detect.outputs.acestep-cpp }}
       qwen3-tts-cpp: ${{ steps.detect.outputs.qwen3-tts-cpp }}
       rfdetr-cpp: ${{ steps.detect.outputs.rfdetr-cpp }}
+      locate-anything-cpp: ${{ steps.detect.outputs.locate-anything-cpp }}
       vibevoice-cpp: ${{ steps.detect.outputs.vibevoice-cpp }}
       localvqe: ${{ steps.detect.outputs.localvqe }}
       voxtral: ${{ steps.detect.outputs.voxtral }}
@@ -901,6 +902,45 @@ jobs:
       - name: Test rfdetr-cpp
         run: |
           make --jobs=5 --output-sync=target -C backend/go/rfdetr-cpp test
+  # Per-backend e2e for locate-anything-cpp: builds the .so + Go binary and
+  # runs `make -C backend/go/locate-anything-cpp test`. test.sh fetches the
+  # locate-anything-q8_0 GGUF (~6.3 GB, NVIDIA LocateAnything-3B) from the
+  # published mudler/locate-anything.cpp-gguf HF repo + a COCO image, then the
+  # Go wire test loads the model and runs an open-vocabulary Detect, asserting
+  # at least one labeled box. Heavier than the other Go backends (it is a 3B),
+  # so it is gated to changes under backend/go/locate-anything-cpp/.
+  tests-locate-anything-cpp:
+    needs: detect-changes
+    if: needs.detect-changes.outputs.locate-anything-cpp == 'true' || needs.detect-changes.outputs.run-all == 'true'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Clone
+        uses: actions/checkout@v6
+        with:
+          submodules: true
+      - name: Dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y build-essential cmake curl libopenblas-dev
+      - name: Setup Go
+        uses: actions/setup-go@v5
+      - name: Display Go version
+        run: go version
+      - name: Proto Dependencies
+        run: |
+          # Install protoc
+          curl -L -s https://github.com/protocolbuffers/protobuf/releases/download/v26.1/protoc-26.1-linux-x86_64.zip -o protoc.zip && \
+          unzip -j -d /usr/local/bin protoc.zip bin/protoc && \
+          rm protoc.zip
+          go install google.golang.org/protobuf/cmd/protoc-gen-go@v1.34.2
+          go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@1958fcbe2ca8bd93af633f11e97d44e567e945af
+          PATH="$PATH:$HOME/go/bin" make protogen-go
+      - name: Build locate-anything-cpp
+        run: |
+          make --jobs=5 --output-sync=target -C backend/go/locate-anything-cpp
+      - name: Test locate-anything-cpp
+        run: |
+          make --jobs=5 --output-sync=target -C backend/go/locate-anything-cpp test
   # Per-backend smoke for vibevoice-cpp: builds the .so + Go binary and
   # runs `make -C backend/go/vibevoice-cpp test`. test.sh auto-downloads
   # the published mudler/vibevoice.cpp-models bundle (TTS Q8_0 + ASR Q4_K