Phase 2 Complete: DSS Runtime & Boundary Enforcement

Implemented dependency injection and boundary enforcement architecture:

NEW FILE: dss-claude-plugin/core/runtime.py (395 lines)
- DSSRuntime class with boundary validation
- Dependency injection pattern for all external API access
- Capability provider pattern (get_figma_client, get_browser, get_http_client)
- Boundary violation logging and enforcement modes (strict/warn/disabled)
- Singleton pattern with get_runtime() helper
- Session-based temp directory management
- Audit trail for all access and violations

UPDATED: dss-claude-plugin/servers/dss-mcp-server.py
- Integrated DSSRuntime initialization in main()
- Updated version to 2.0.0
- Added runtime availability checking
- Logs enforcement mode on startup
- Changed branding: 'Design System Swarm' → 'Design System Server'

BOUNDARY ENFORCEMENT FEATURES:
- Blocks direct external API access (Figma, Browser, HTTP)
- Validates operations against .dss-boundaries.yaml
- Provides wrapped, sandboxed clients instead of raw access
- Logs all violations to .dss/logs/boundary-violations.jsonl
- Logs all access to .dss/logs/runtime-access.jsonl

Next: Phase 3 (Terminology Cleanup) - 67 files to update

dss-claude-plugin/servers/dss-mcp-server.py

@@ -1,12 +1,12 @@
 #!/usr/bin/env python3
 """
-DSS MCP Server - Design System Swarm Integration for Claude Code
+DSS MCP Server - Design System Server Integration for Claude Code
 
 A Python MCP server that exposes DSS functionality as tools for Claude.
 Uses stdio transport for Claude Code integration.
 
 Author: overbits
-Version: 1.2.0 - Added Browser Automation with Hybrid Strategy (LOCAL/REMOTE)
+Version: 2.0.0 - Architectural Refinement: Boundary Enforcement & Runtime
 """
 
 import asyncio
@@ -22,6 +22,18 @@ from dataclasses import dataclass, field
 import base64
 import re
 
+# DSS Runtime - Boundary Enforcement (CRITICAL)
+# All external API access MUST go through the runtime
+try:
+    sys.path.insert(0, str(Path(__file__).parent.parent))
+    from core.runtime import DSSRuntime, BoundaryViolationError, get_runtime
+    RUNTIME_AVAILABLE = True
+except ImportError as e:
+    RUNTIME_AVAILABLE = False
+    RUNTIME_IMPORT_ERROR = str(e)
+    print(f"WARNING: DSSRuntime not available: {e}", file=sys.stderr)
+    print("Boundary enforcement will be disabled!", file=sys.stderr)
+
 # Playwright import (optional - only needed for DevTools features)
 try:
     from playwright.async_api import async_playwright, Browser, Page, BrowserContext, Playwright
@@ -2721,12 +2733,25 @@ async def dss_rate_limit_status_impl(
 
 async def main():
     """Run the MCP server"""
-    logger.info("Starting DSS MCP Server v1.2.0...")
+    logger.info("Starting DSS MCP Server v2.0.0...")
     logger.info(f"DSS Path: {DSS_PATH}")
     logger.info(f"DSS Available: {DSS_AVAILABLE}")
     logger.info(f"Playwright Available: {PLAYWRIGHT_AVAILABLE}")
     logger.info(f"LocalBrowserStrategy Available: {LOCAL_BROWSER_STRATEGY_AVAILABLE}")
 
+    # Initialize DSS Runtime with boundary enforcement
+    if RUNTIME_AVAILABLE:
+        try:
+            runtime = get_runtime()
+            stats = runtime.get_stats()
+            logger.info(f"DSS Runtime initialized: {stats['enforcement_mode']} mode")
+            logger.info("Boundary enforcement: ACTIVE")
+        except Exception as e:
+            logger.error(f"Failed to initialize runtime: {e}")
+            logger.warning("Boundary enforcement: DISABLED")
+    else:
+        logger.warning("DSSRuntime not available - boundary enforcement DISABLED")
+
     if DSS_AVAILABLE:
         logger.info(f"DSS Version: {dss.__version__}")