feat: add unified code quality dashboard with multiple validators

- Add validator_type field to scans and violations (architecture,
  security, performance)
- Create security validator with SEC-xxx rules
- Create performance validator with PERF-xxx rules
- Add base validator class for shared functionality
- Add validate_all.py script to run all validators
- Update code quality service with validator type filtering
- Add validator type tabs to dashboard UI
- Add validator type filter to violations list
- Update stats response with per-validator breakdown
- Add security and performance rules documentation
- Add chat-bubble icons to icon library

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

static/admin/js/code-quality-violations.js

@@ -25,6 +25,7 @@ function codeQualityViolations() {
             total_pages: 0
         },
         filters: {
+            validator_type: '',
             severity: '',
             status: '',
             rule_id: '',
@@ -34,6 +35,7 @@ function codeQualityViolations() {
         async init() {
             // Load filters from URL params
             const params = new URLSearchParams(window.location.search);
+            this.filters.validator_type = params.get('validator_type') || '';
             this.filters.severity = params.get('severity') || '';
             this.filters.status = params.get('status') || '';
             this.filters.rule_id = params.get('rule_id') || '';
@@ -53,6 +55,7 @@ function codeQualityViolations() {
                     page_size: this.pagination.page_size.toString()
                 };
 
+                if (this.filters.validator_type) params.validator_type = this.filters.validator_type;
                 if (this.filters.severity) params.severity = this.filters.severity;
                 if (this.filters.status) params.status = this.filters.status;
                 if (this.filters.rule_id) params.rule_id = this.filters.rule_id;
@@ -168,6 +171,7 @@ function codeQualityViolations() {
         updateURL() {
             const params = new URLSearchParams();
 
+            if (this.filters.validator_type) params.set('validator_type', this.filters.validator_type);
             if (this.filters.severity) params.set('severity', this.filters.severity);
             if (this.filters.status) params.set('status', this.filters.status);
             if (this.filters.rule_id) params.set('rule_id', this.filters.rule_id);