feat: add numa feature flag and automate release workflow

Refactor the Gitea release pipeline to generate releases via API and upload binaries using a shared ID. Automate changelog generation by fetching recent commits with `jj log` and producing markdown notes via `aichat`. Convert `hwlocality` to an optional dependency gated by a default `numa` feature, providing fallback implementations for graceful degradation when NUMA support is disabled. Bump obikmer to 1.1.18.

.gitea/workflows/release.yml

@@ -6,7 +6,32 @@ on:
       - "v*"
 
 jobs:
-  build-linux-static:
+  create-release:
+    runs-on: ubuntu-latest
+    outputs:
+      release_id: ${{ steps.create.outputs.release_id }}
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-tags: true
+
+      - name: Create Gitea release
+        id: create
+        env:
+          GITEA_TOKEN: ${{ secrets.GITEATOKEN }}
+          TAG: ${{ github.ref_name }}
+        run: |
+          sudo apt-get update -qq && sudo apt-get install -y -qq jq
+          body=$(git for-each-ref --format='%(contents)' "refs/tags/$TAG")
+          release_id=$(curl -s -X POST \
+            "${{ github.server_url }}/api/v1/repos/${{ github.repository }}/releases" \
+            -H "Authorization: token $GITEA_TOKEN" \
+            -H "Content-Type: application/json" \
+            -d "{\"tag_name\":\"$TAG\",\"name\":\"$TAG\",\"body\":$(echo "$body" | jq -Rs .)}" | jq -r '.id')
+          echo "release_id=$release_id" >> $GITHUB_OUTPUT
+
+  build-linux-x86_64:
+    needs: create-release
     runs-on: ubuntu-latest
     defaults:
       run:
@@ -45,23 +70,58 @@ jobs:
           PKG_CONFIG_ALLOW_CROSS: "1"
         run: cargo zigbuild --release --target x86_64-unknown-linux-musl
 
-      - name: Prepare artifact
+      - name: Prepare and upload artifact
+        env:
+          GITEA_TOKEN: ${{ secrets.GITEATOKEN }}
+          RELEASE_ID: ${{ needs.create-release.outputs.release_id }}
         run: |
           mkdir -p /tmp/dist
           cp target/x86_64-unknown-linux-musl/release/obikmer /tmp/dist/obikmer-linux-x86_64
           strip /tmp/dist/obikmer-linux-x86_64
-
-      - name: Create Gitea release and upload binary
-        env:
-          GITEA_TOKEN: ${{ secrets.GITEATOKEN }}
-          TAG: ${{ github.ref_name }}
-        run: |
-          release_id=$(curl -s -X POST \
-            "${{ github.server_url }}/api/v1/repos/${{ github.repository }}/releases" \
-            -H "Authorization: token $GITEA_TOKEN" \
-            -H "Content-Type: application/json" \
-            -d "{\"tag_name\":\"$TAG\",\"name\":\"$TAG\"}" | jq -r '.id')
           curl -s -X POST \
-            "${{ github.server_url }}/api/v1/repos/${{ github.repository }}/releases/$release_id/assets" \
+            "${{ github.server_url }}/api/v1/repos/${{ github.repository }}/releases/$RELEASE_ID/assets" \
             -H "Authorization: token $GITEA_TOKEN" \
             -F "attachment=@/tmp/dist/obikmer-linux-x86_64"
+
+  build-macos-arm64:
+    needs: create-release
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: src
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust + zigbuild
+        run: |
+          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable
+          echo "$HOME/.cargo/bin" >> $GITHUB_PATH
+          sudo apt-get update -qq && sudo apt-get install -y -qq jq
+          pip install ziglang --quiet --break-system-packages
+          $HOME/.cargo/bin/cargo install cargo-zigbuild
+          $HOME/.cargo/bin/rustup target add aarch64-apple-darwin
+
+      - name: Cache cargo registry
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            src/target
+          key: macos-arm64-cargo-${{ hashFiles('src/Cargo.lock') }}
+          restore-keys: macos-arm64-cargo-
+
+      - name: Build macOS binary
+        run: cargo zigbuild --release --target aarch64-apple-darwin --no-default-features
+
+      - name: Prepare and upload artifact
+        env:
+          GITEA_TOKEN: ${{ secrets.GITEATOKEN }}
+          RELEASE_ID: ${{ needs.create-release.outputs.release_id }}
+        run: |
+          mkdir -p /tmp/dist
+          cp target/aarch64-apple-darwin/release/obikmer /tmp/dist/obikmer-macos-arm64
+          curl -s -X POST \
+            "${{ github.server_url }}/api/v1/repos/${{ github.repository }}/releases/$RELEASE_ID/assets" \
+            -H "Authorization: token $GITEA_TOKEN" \
+            -F "attachment=@/tmp/dist/obikmer-macos-arm64"