Initial commit: Clean DSS implementation

Migrated from design-system-swarm with fresh git history.
Old project history preserved in /home/overbits/apps/design-system-swarm

Core components:
- MCP Server (Python FastAPI with mcp 1.23.1)
- Claude Plugin (agents, commands, skills, strategies, hooks, core)
- DSS Backend (dss-mvp1 - token translation, Figma sync)
- Admin UI (Node.js/React)
- Server (Node.js/Express)
- Storybook integration (dss-mvp1/.storybook)

Self-contained configuration:
- All paths relative or use DSS_BASE_PATH=/home/overbits/dss
- PYTHONPATH configured for dss-mvp1 and dss-claude-plugin
- .env file with all configuration
- Claude plugin uses ${CLAUDE_PLUGIN_ROOT} for portability

Migration completed: $(date)
🤖 Clean migration with full functionality preserved

tests/test_ingestion.py

@@ -0,0 +1,65 @@
+"""
+Tests for token ingestion from various sources.
+"""
+
+import pytest
+import json
+from tools.ingest.css import CSSTokenSource
+from tools.ingest.scss import SCSSTokenSource
+from tools.ingest.json_tokens import JSONTokenSource
+
+
+@pytest.mark.asyncio
+async def test_css_ingestion(sample_css):
+    """Test CSS custom property extraction."""
+    parser = CSSTokenSource()
+    result = await parser.extract(sample_css)
+
+    assert len(result.tokens) >= 5
+    assert any(t.name == "color.primary" for t in result.tokens)
+    assert any(t.value == "#3B82F6" for t in result.tokens)
+
+
+@pytest.mark.asyncio
+async def test_scss_ingestion(sample_scss):
+    """Test SCSS variable extraction."""
+    parser = SCSSTokenSource()
+    result = await parser.extract(sample_scss)
+
+    assert len(result.tokens) >= 4
+    assert any(t.name == "primary-color" for t in result.tokens)
+
+
+@pytest.mark.asyncio
+async def test_json_ingestion(sample_json_tokens):
+    """Test JSON token extraction (W3C format)."""
+    parser = JSONTokenSource()
+    result = await parser.extract(json.dumps(sample_json_tokens))
+
+    assert len(result.tokens) >= 6
+    # Check color tokens
+    primary_tokens = [t for t in result.tokens if "primary" in t.name]
+    assert len(primary_tokens) >= 2
+
+    # Check spacing tokens
+    spacing_tokens = [t for t in result.tokens if "spacing" in t.name]
+    assert len(spacing_tokens) == 3
+
+
+@pytest.mark.asyncio
+async def test_empty_css():
+    """Test handling of empty CSS."""
+    parser = CSSTokenSource()
+    result = await parser.extract("")
+
+    assert len(result.tokens) == 0
+    assert result.name
+
+
+@pytest.mark.asyncio
+async def test_invalid_json():
+    """Test handling of invalid JSON."""
+    parser = JSONTokenSource()
+
+    with pytest.raises(json.JSONDecodeError):
+        await parser.extract("invalid json{")