fix: Add Rust toolchain setup to Go workflows

- Add Rust toolchain installation step to go-ci.yml and go-release.yml
- Ensures cargo is available when no rust-v* releases exist yet
- Fixes CI failures on Windows and other platforms during initial setup
- Removes unnecessary apt-get install cargo from Linux fallback

This allows the workflows to build the Rust library locally when no
rust-v* tagged releases are available, which is the case for new
branches and initial project setup.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: tazarov

.claude/commands/feature.md

@@ -0,0 +1,15 @@
+Please analyze and implement the GitHub feature: $ARGUMENTS.
+
+Follow these steps:
+
+1. Use `gh issue view` to get the feature issue details
+2. Understand the feature described in the issue
+3. Create a new branch for the change, ensure the working three is clean
+4. Search the codebase for relevant files
+5. Implement the necessary changes to address the feature requirements
+6. Write and run tests to verify the feature is working as intended
+7. Ensure code passes linting and type checking
+8. Create a descriptive commit message
+9. Push and create a PR
+
+Remember to use the GitHub CLI (`gh`) for all GitHub-related tasks.

.claude/commands/ifeed.md

@@ -0,0 +1,10 @@
+Use the following feedback to do the following:
+
+- Create new issues if the suggestions cause a scope creep for the current PR
+- Implement critical issues and those that make sense in the context of the PR so that it is in a complete and usable state
+
+FEEDBACK:
+
+$ARGUMENTS
+
+**IMPORTANT:** Be concise and make sure to lint and test all code changes.

.github/workflows/go-ci.yml

@@ -37,21 +37,23 @@ jobs:
       with:
         go-version: ${{ matrix.go-version }}
 
+    - name: Install Rust toolchain (for fallback builds)
+      uses: dtolnay/rust-toolchain@stable
+
     - name: Run Go linting
       uses: golangci/golangci-lint-action@v6
       with:
         version: latest
         args: --timeout=5m
 
     # Download pre-built Rust library for testing
-    # This assumes a recent Rust release is available
+    # Falls back to building locally if no rust-v* releases exist yet
     - name: Download latest Rust library (Linux)
       if: matrix.os == 'ubuntu-latest'
       run: |
         LATEST_RELEASE=$(gh release list --repo ${{ github.repository }} --limit 10 | grep -E "^rust-v" | head -1 | cut -f1)
         if [ -z "$LATEST_RELEASE" ]; then
           echo "No Rust release found, building locally"
-          sudo apt-get update && sudo apt-get install -y cargo
           cargo build --release
           echo "TOKENIZERS_LIB_PATH=$(pwd)/target/release/libtokenizers.so" >> $GITHUB_ENV
         else
@@ -129,6 +131,9 @@ jobs:
       with:
         go-version: '1.24'
 
+    - name: Install Rust toolchain (for fallback builds)
+      uses: dtolnay/rust-toolchain@stable
+
     - name: Download latest Rust library
       run: |
         LATEST_RELEASE=$(gh release list --repo ${{ github.repository }} --limit 10 | grep -E "^rust-v" | head -1 | cut -f1)

.github/workflows/go-release.yml

@@ -28,6 +28,9 @@ jobs:
       with:
         go-version: ${{ matrix.go-version }}
 
+    - name: Install Rust toolchain (for fallback builds)
+      uses: dtolnay/rust-toolchain@stable
+
     - name: Run Go linting
       uses: golangci/golangci-lint-action@v6
       with: