ci: switch all workflows to hanzo-build ARC runners, fix stale iching refs

- Replace ubuntu-latest with hanzo-build across all 11 workflow files
- Fix IChingTool → ZenTool references in test-hanzo-mcp and test-hanzo-tools

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ on:
 jobs:
   lint:
     name: lint
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
 
     steps:
       - uses: actions/checkout@v4
@@ -32,7 +32,7 @@ jobs:
 
   test:
     name: test
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
 
     steps:
       - uses: actions/checkout@v4

.github/workflows/docs.yml

@@ -22,7 +22,7 @@ concurrency:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     steps:
       - uses: actions/checkout@v4
         with:
@@ -56,7 +56,7 @@ jobs:
     environment:
       name: github-pages
       url: ${{ steps.deployment.outputs.page_url }}
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     needs: build
     steps:
       - name: Deploy to GitHub Pages

.github/workflows/generate-api-providers.yml

@@ -17,7 +17,7 @@ on:
 
 jobs:
   generate:
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     permissions:
       contents: write
       pull-requests: write

.github/workflows/hanzo-packages-ci.yml

@@ -40,7 +40,7 @@ on:
 jobs:
   test-hanzo-network:
     name: Test hanzo-network
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     timeout-minutes: 5
     defaults:
       run:
@@ -66,7 +66,7 @@ jobs:
   
   test-hanzo-mcp:
     name: Test hanzo-mcp
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     timeout-minutes: 5
     defaults:
       run:
@@ -97,7 +97,7 @@ jobs:
   
   test-hanzo-aci:
     name: Test hanzo-aci
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     timeout-minutes: 5
     defaults:
       run:
@@ -126,7 +126,7 @@ jobs:
 
   test-hanzo-memory:
     name: Test hanzo-memory
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     timeout-minutes: 5
     defaults:
       run:
@@ -153,7 +153,7 @@ jobs:
   integration-test:
     name: Integration Test
     needs: [test-hanzo-network, test-hanzo-mcp, test-hanzo-aci, test-hanzo-memory, test-hanzo, test-hanzo-repl]
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     
     steps:
       - uses: actions/checkout@v4
@@ -182,7 +182,7 @@ jobs:
   
   lint:
     name: Lint Hanzo Packages
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     
     steps:
       - uses: actions/checkout@v4
@@ -237,7 +237,7 @@ jobs:
   
   test-hanzo:
     name: Test hanzo (main package)
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     timeout-minutes: 5
     defaults:
       run:
@@ -267,7 +267,7 @@ jobs:
   
   test-hanzo-repl:
     name: Test hanzo-repl
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     timeout-minutes: 5
     defaults:
       run:
@@ -303,7 +303,7 @@ jobs:
     name: Auto-Publish New Versions
     if: github.ref == 'refs/heads/main' && github.event_name == 'push'
     needs: [test-hanzo-network, test-hanzo-mcp, test-hanzo-aci, test-hanzo-memory, test-hanzo, test-hanzo-repl, integration-test]
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
 
     steps:
       - uses: actions/checkout@v4
@@ -326,7 +326,7 @@ jobs:
     name: Publish to PyPI (Tag)
     if: startsWith(github.ref, 'refs/tags/')
     needs: [test-hanzo-network, test-hanzo-mcp, test-hanzo-aci, test-hanzo-memory, test-hanzo, test-hanzo-repl, integration-test]
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
 
     steps:
       - uses: actions/checkout@v4

.github/workflows/publish-pypi.yml

@@ -28,7 +28,7 @@ jobs:
 
   publish-all-packages:
     name: Publish All Python Packages
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     needs: test  # Only publish if tests pass
     if: always() && !cancelled()
 

.github/workflows/quality-gate.yml

@@ -16,7 +16,7 @@ concurrency:
 jobs:
   block-todo-stub-code:
     name: "🚫 Block TODO/STUB/FAKE Code"
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     steps:
       - uses: actions/checkout@v4
 
@@ -57,7 +57,7 @@ jobs:
 
   test-no-stubs:
     name: "🧪 Anti-Stub Tests"
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     steps:
       - uses: actions/checkout@v4
 
@@ -87,7 +87,7 @@ jobs:
 
   all-tests-must-pass:
     name: "✅ ALL Tests Must Pass"
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     strategy:
       fail-fast: true  # Stop immediately if any test fails
       matrix:
@@ -142,7 +142,7 @@ jobs:
 
   code-quality:
     name: "🎯 Code Quality Check"
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     steps:
       - uses: actions/checkout@v4
 
@@ -174,7 +174,7 @@ jobs:
 
   function-implementation-check:
     name: "🔨 Verify Functions Are Implemented"
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     steps:
       - uses: actions/checkout@v4
 
@@ -213,7 +213,7 @@ jobs:
       - all-tests-must-pass
       - code-quality
       - function-implementation-check
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     if: github.event_name == 'release' || github.ref == 'refs/heads/main'
 
     steps:
@@ -235,7 +235,7 @@ jobs:
     name: "📦 Publish to PyPI"
     needs: [block-deployment]
     if: github.event_name == 'release'
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
 
     steps:
       - uses: actions/checkout@v4

.github/workflows/release-doctor.yml

@@ -8,7 +8,7 @@ on:
 jobs:
   release_doctor:
     name: release doctor
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     if: github.repository == 'hanzoai/python-sdk' && (github.event_name == 'push' || github.event_name == 'workflow_dispatch' || startsWith(github.head_ref, 'release-please') || github.head_ref == 'next')
 
     steps:

.github/workflows/test-auto-publish.yml

@@ -16,7 +16,7 @@ on:
 jobs:
   test-version-check:
     name: Test Version Check
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
 
     steps:
       - uses: actions/checkout@v4

.github/workflows/test-hanzo-mcp.yml

@@ -21,7 +21,7 @@ on:
 
 jobs:
   test:
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     env:
       PYTEST_DISABLE_PLUGIN_AUTOLOAD: "1"
     strategy:
@@ -77,7 +77,7 @@ jobs:
     
 
   integration-tests:
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     if: |
       github.event_name == 'workflow_dispatch' && 
       github.event.inputs.run_integration_tests == 'true'
@@ -118,27 +118,27 @@ jobs:
         # Test agent tool import and basic functionality
         echo "Testing Agent tools..."
         uv run python -c "
-        from hanzo_tools.agent import AgentTool, IChingTool, ReviewTool, TOOLS
-        
+        from hanzo_tools.agent import AgentTool, ZenTool, ReviewTool, TOOLS
+
         # Verify all tools are available
         tool_names = [t.__name__ for t in TOOLS]
         assert 'AgentTool' in tool_names
-        assert 'IChingTool' in tool_names
+        assert 'ZenTool' in tool_names
         assert 'ReviewTool' in tool_names
-        
+
         # Create tool instances
         agent = AgentTool()
-        iching = IChingTool()
+        zen = ZenTool()
         review = ReviewTool()
-        
+
         print(f'Agent tool name: {agent.name}')
-        print(f'IChing tool name: {iching.name}')
+        print(f'Zen tool name: {zen.name}')
         print(f'Review tool name: {review.name}')
         print('All agent tools created successfully!')
         "
 
   release-check:
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     needs: [test]
     if: github.ref == 'refs/heads/main'
 
@@ -175,7 +175,7 @@ jobs:
         
         # Test that agent tools can be imported from hanzo_tools.agent
         python -c "
-        from hanzo_tools.agent import AgentTool, IChingTool, ReviewTool, TOOLS
+        from hanzo_tools.agent import AgentTool, ZenTool, ReviewTool, TOOLS
         print(f'Agent tools available: {[t.__name__ for t in TOOLS]}')
         print('All agent tools importable!')
         "

.github/workflows/test-hanzo-tools.yml

@@ -15,7 +15,7 @@ on:
 
 jobs:
   test:
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     timeout-minutes: 10
     strategy:
       matrix:
@@ -73,7 +73,7 @@ jobs:
             ('hanzo_tools.database', 9),
             ('hanzo_tools.jupyter', 1),
             ('hanzo_tools.editor', 3),
-            ('hanzo_tools.agent', 3),        # agent, iching, review
+            ('hanzo_tools.agent', 3),        # agent, zen, review
         ]
 
         # Shell tool count depends on detected shell, but core tools are fixed.

.github/workflows/test.yml

@@ -9,7 +9,7 @@ on:
 
 jobs:
   test:
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     strategy:
       matrix:
         python-version: ["3.12", "3.13"]
@@ -40,7 +40,7 @@ jobs:
         hanzo node --help
 
   lint:
-    runs-on: ubuntu-latest
+    runs-on: hanzo-build
     
     steps:
     - uses: actions/checkout@v4