feat(scripts): implement self-healing label system with auto-creation

- Fix HTTP 422 errors by using label IDs instead of names
- Add silent label creation to prevent stdout pollution in JSON building
- Implement smart auto-creation of unknown labels (service-*, priority-*, etc.)
- Add safe array handling to prevent bash associative array errors
- Create tracking system for new labels (NEW_LABELS_CREATED array)

✅ Fixed: Label creation, issue creation, unknown label handling
⏳ TODO: Auto-update script synchronization when new labels created

Status: Issue creation works perfectly, auto-update integration pending

configs/labels.registry

@@ -0,0 +1,49 @@
+#!/bin/bash
+# config/labels.registry
+# Central Label Registry for Furt API Gateway Project
+# Format: name:color:context:usage_contexts
+# This file is the single source of truth for all labels
+
+# === CORE WORKFLOW LABELS ===
+service-request:7057ff:new_service:service_templates,status_updates
+enhancement:84b6eb:improvement:all_templates
+bug:d73a4a:error:bug_template,status_updates
+question:d876e3:discussion:question_template
+
+# === COMPONENT CATEGORIES ===
+gateway:0052cc:gateway_core:architecture,performance,service_templates
+performance:fbca04:optimization:performance_template,architecture
+architecture:d4c5f9:design:architecture_template,gateway
+security:28a745:security_review:security_template,gateway
+configuration:f9d71c:config_management:deployment,architecture
+
+# === SERVICE-SPECIFIC LABELS ===
+service-formular2mail:1d76db:formular2mail:service_templates,integration
+service-sagjan:1d76db:sagjan:service_templates,integration
+service-newsletter:ff6b6b:newsletter:service_templates,integration
+
+# === WORKFLOW STATE LABELS ===
+work-in-progress:fbca04:active:status_updates
+needs-review:0e8a16:review:status_updates
+blocked:d73a4a:blocked:status_updates
+ready-for-deployment:28a745:deploy_ready:status_updates
+
+# === INTEGRATION LABELS ===
+hugo-integration:ff7518:frontend:hugo_templates,integration
+api-contract:5319e7:api_design:api_templates,service_templates
+breaking-change:d73a4a:breaking:api_templates,architecture
+
+# === PRIORITY LABELS ===
+high-priority:d73a4a:urgent:all_templates
+low-priority:0e8a16:nice_to_have:all_templates
+
+# === META LABELS ===
+low-tech:6f42c1:low_tech_principle:all_templates
+digital-sovereignty:6f42c1:digital_sovereignty:all_templates
+good-first-issue:7057ff:beginner_friendly:all_templates
+help-wanted:159818:community_help:all_templates
+
+# === DEPLOYMENT LABELS ===
+deployment:ff7518:deployment:deployment_template
+testing:f9d71c:testing:testing_template,integration
+documentation:0366d6:docs:documentation_template