feat: Enterprise DSS architecture implementation

Complete implementation of enterprise design system validation:

Phase 1 - @dss/rules npm package:
- CLI with validate and init commands
- 16 rules across 5 categories (colors, spacing, typography, components, a11y)
- dss-ignore support (inline and next-line)
- Break-glass [dss-skip] for emergency merges
- CI workflow templates (Gitea, GitHub, GitLab)

Phase 2 - Metrics dashboard:
- FastAPI metrics API with SQLite storage
- Portfolio-wide metrics aggregation
- Project drill-down with file:line:column violations
- Trend charts and history tracking

Phase 3 - Local analysis cache:
- LocalAnalysisCache for offline-capable validation
- Mode detection (LOCAL/REMOTE/CI)
- Stale cache warnings with recommendations

Phase 4 - Project onboarding:
- dss-init command for project setup
- Creates ds.config.json, .dss/ folder structure
- Updates .gitignore and package.json scripts
- Optional CI workflow setup

Architecture decisions:
- No commit-back: CI uploads to dashboard, not git
- Three-tier: Dashboard (read-only) → CI (authoritative) → Local (advisory)
- Pull-based rules via npm for version control

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

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

packages/dss-rules/rules/components.json

@@ -10,7 +10,7 @@
     {
       "id": "use-design-system-components",
       "name": "Use Design System Components",
-      "description": "Prefer design system components over custom implementations",
+      "description": "Prefer design system components over native HTML or custom implementations",
       "severity": "error",
       "components": {
         "required": {
@@ -44,17 +44,12 @@
       "severity": "error",
       "validation": {
         "Button": {
-          "requiredProps": ["variant", "size"],
-          "conditionalProps": {
-            "loading": ["loadingText"],
-            "icon": ["aria-label"]
-          }
+          "requiredProps": ["variant"],
+          "conditionalProps": { "loading": ["loadingText"], "icon": ["aria-label"] }
         },
         "Input": {
           "requiredProps": ["label", "name"],
-          "conditionalProps": {
-            "error": ["errorMessage"]
-          }
+          "conditionalProps": { "error": ["errorMessage"] }
         },
         "Modal": {
           "requiredProps": ["title", "onClose"],
@@ -62,52 +57,15 @@
         }
       }
     },
-    {
-      "id": "component-composition",
-      "name": "Component Composition Patterns",
-      "description": "Follow recommended composition patterns for complex UIs",
-      "severity": "info",
-      "patterns": {
-        "forms": {
-          "structure": ["Form", "FormField", "Input/Select", "Button"],
-          "guidelines": [
-            "Wrap inputs in FormField for consistent labeling",
-            "Use Form component for validation handling",
-            "Place submit button inside Form"
-          ]
-        },
-        "lists": {
-          "structure": ["List", "ListItem"],
-          "guidelines": [
-            "Use semantic list components for accessibility",
-            "Implement virtualization for 50+ items"
-          ]
-        },
-        "navigation": {
-          "structure": ["Nav", "NavItem", "NavLink"],
-          "guidelines": [
-            "Use Nav component for main navigation",
-            "Implement active state handling"
-          ]
-        }
-      }
-    },
     {
       "id": "no-inline-styles",
       "name": "No Inline Styles on Components",
       "description": "Components should use className/variant props, not style attribute",
       "severity": "warning",
       "patterns": {
-        "forbidden": [
-          "style={{",
-          "style={{"
-        ],
-        "exceptions": [
-          "dynamic positioning",
-          "animations",
-          "calculated values"
-        ]
-      }
+        "forbidden": ["style={{", "style={"]
+      },
+      "exceptions": ["dynamic positioning", "animations", "calculated values"]
     }
   ],
   "adoption": {
@@ -116,10 +74,6 @@
       "target": 80,
       "excellent": 95
     },
-    "metrics": [
-      "percentage_using_ds_components",
-      "custom_component_count",
-      "token_compliance_rate"
-    ]
+    "metrics": ["percentage_using_ds_components", "custom_component_count", "token_compliance_rate"]
   }
 }