reorg: Rewrite agfs to ragfs with rust

.github/workflows/_build.yml

@@ -237,12 +237,50 @@ jobs:
         mkdir -p openviking/bin
         cp target/${{ matrix.arch == 'aarch64' && 'aarch64-unknown-linux-gnu' || 'x86_64-unknown-linux-gnu' }}/release/ov openviking/bin/
         chmod +x openviking/bin/ov
+
+    - name: Build ragfs-python and extract into openviking/lib/ (Linux)
+      shell: bash
+      run: |
+        uv pip install maturin
+        TMPDIR=$(mktemp -d)
+        cd crates/ragfs-python
+        maturin build --release \
+          --target ${{ matrix.arch == 'aarch64' && 'aarch64-unknown-linux-gnu' || 'x86_64-unknown-linux-gnu' }} \
+          --out "$TMPDIR"
+        cd ../..
+        mkdir -p openviking/lib
+        python3 -c "
+import zipfile, glob, os, sys
+whls = glob.glob(os.path.join('$TMPDIR', 'ragfs_python-*.whl'))
+assert whls, 'maturin produced no wheel'
+with zipfile.ZipFile(whls[0]) as zf:
+    for name in zf.namelist():
+        bn = os.path.basename(name)
+        if bn.startswith('ragfs_python') and (bn.endswith('.so') or bn.endswith('.pyd')):
+            dst = os.path.join('openviking', 'lib', bn)
+            with zf.open(name) as src, open(dst, 'wb') as f:
+                f.write(src.read())
+            os.chmod(dst, 0o755)
+            print(f'Extracted {bn} -> {dst}')
+            sys.exit(0)
+print('ERROR: No ragfs_python .so/.pyd found in wheel')
+sys.exit(1)
+        "
+        rm -rf "$TMPDIR"
+        echo "Contents of openviking/lib/:"
+        ls -la openviking/lib/
     - name: Clean workspace (force ignore dirty)
       shell: bash
       run: |
+        # Back up pre-built artifacts before cleaning
+        cp -a openviking/bin /tmp/_ov_bin || true
+        cp -a openviking/lib /tmp/_ov_lib || true
         git reset --hard HEAD
         git clean -fd
         rm -rf openviking/_version.py openviking.egg-info
+        # Restore pre-built artifacts
+        cp -a /tmp/_ov_bin openviking/bin || true
+        cp -a /tmp/_ov_lib openviking/lib || true
         # Ignore uv.lock changes to avoid dirty state in setuptools_scm
         git update-index --assume-unchanged uv.lock || true
 
@@ -257,6 +295,8 @@ jobs:
         git status --ignored
         echo "=== Check openviking/_version.py ==="
         if [ -f openviking/_version.py ]; then cat openviking/_version.py; else echo "Not found"; fi
+        echo "=== Verify pre-built artifacts survived clean ==="
+        ls -la openviking/bin/ openviking/lib/ || true
 
     - name: Build package (Wheel Only)
       run: uv build --wheel
@@ -276,11 +316,8 @@ jobs:
     - name: Repair wheels (Linux)
       run: |
         uv pip install auditwheel
-        # Repair wheels and output to a temporary directory
         uv run auditwheel repair dist/*.whl -w dist_fixed
-        # Remove original non-compliant wheels
         rm dist/*.whl
-        # Move repaired wheels back to dist
         mv dist_fixed/*.whl dist/
         rmdir dist_fixed
 
@@ -405,12 +442,52 @@ jobs:
           cp target/release/ov openviking/bin/
           chmod +x openviking/bin/ov
         fi
+
+    - name: Build ragfs-python and extract into openviking/lib/ (macOS/Windows)
+      shell: bash
+      run: |
+        uv pip install maturin
+        TMPDIR=$(mktemp -d)
+        cd crates/ragfs-python
+        if [[ "${{ matrix.os }}" == "windows-latest" ]]; then
+          maturin build --release --target x86_64-pc-windows-msvc --out "$TMPDIR"
+        else
+          maturin build --release --out "$TMPDIR"
+        fi
+        cd ../..
+        mkdir -p openviking/lib
+        python3 -c "
+import zipfile, glob, os, sys
+whls = glob.glob(os.path.join('$TMPDIR', 'ragfs_python-*.whl'))
+assert whls, 'maturin produced no wheel'
+with zipfile.ZipFile(whls[0]) as zf:
+    for name in zf.namelist():
+        bn = os.path.basename(name)
+        if bn.startswith('ragfs_python') and (bn.endswith('.so') or bn.endswith('.pyd')):
+            dst = os.path.join('openviking', 'lib', bn)
+            with zf.open(name) as src, open(dst, 'wb') as f:
+                f.write(src.read())
+            os.chmod(dst, 0o755)
+            print(f'Extracted {bn} -> {dst}')
+            sys.exit(0)
+print('ERROR: No ragfs_python .so/.pyd found in wheel')
+sys.exit(1)
+        "
+        rm -rf "$TMPDIR"
+        echo "Contents of openviking/lib/:"
+        ls -la openviking/lib/
     - name: Clean workspace (force ignore dirty)
       shell: bash
       run: |
+        # Back up pre-built artifacts before cleaning
+        cp -a openviking/bin /tmp/_ov_bin || true
+        cp -a openviking/lib /tmp/_ov_lib || true
         git reset --hard HEAD
         git clean -fd
         rm -rf openviking/_version.py openviking.egg-info
+        # Restore pre-built artifacts
+        cp -a /tmp/_ov_bin openviking/bin || true
+        cp -a /tmp/_ov_lib openviking/lib || true
         # Ignore uv.lock changes to avoid dirty state in setuptools_scm
         git update-index --assume-unchanged uv.lock || true
 
@@ -425,6 +502,8 @@ jobs:
         git status --ignored
         echo "=== Check openviking/_version.py ==="
         if [ -f openviking/_version.py ]; then cat openviking/_version.py; else echo "Not found"; fi
+        echo "=== Verify pre-built artifacts survived clean ==="
+        ls -la openviking/bin/ openviking/lib/ || true
 
     - name: Build package (Wheel Only)
       run: uv build --wheel

.github/workflows/api_test.yml

@@ -59,20 +59,13 @@ jobs:
 
       - name: Cache Go modules
         uses: actions/cache@v5
+        continue-on-error: true
         with:
           path: ~/go/pkg/mod
-          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          key: ${{ runner.os }}-go-${{ hashFiles('third_party/agfs/**/go.sum') }}
           restore-keys: |
             ${{ runner.os }}-go-
 
-      - name: Cache C++ extensions
-        uses: actions/cache@v5
-        with:
-          path: openviking/pyagfs
-          key: ${{ runner.os }}-cpp-${{ hashFiles('**/CMakeLists.txt', '**/*.cpp', '**/*.h') }}
-          restore-keys: |
-            ${{ runner.os }}-cpp-
-
       - name: Cache Python dependencies (Unix)
         if: runner.os != 'Windows'
         uses: actions/cache@v5
@@ -94,7 +87,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v6
         with:
-          go-version: '1.22'
+          go-version: '1.25.1'
 
       - name: Install system dependencies (Ubuntu)
         if: runner.os == 'Linux'