feat(J): J-UI frontend — ImprovementCenter, ProposalCard, PatternInsight, API client, i18n, tsc clean

frontend/src/i18n/locales/de.json

@@ -1353,5 +1353,43 @@
       "title": "Knowledge & Workstream aktivieren",
       "description": "Erstellen Sie Wiki-Artikel und verbinden Sie Menschen, Agenten und Workflows in einem einheitlichen Stream."
     }
+  },
+  "improvement": {
+    "title": "Improvement Center",
+    "subtitle": "Kontrollierte Selbstverbesserung — Vorschläge, Muster und Wirkungsmessung.",
+    "proposals": "Verbesserungsvorschläge",
+    "patterns": "Erkannte Muster & Engpässe",
+    "evidence": "Evidenz",
+    "approve": "Genehmigen",
+    "reject": "Ablehnen",
+    "rollback": "Zurücksetzen",
+    "score": "Bewertung",
+    "confidence": "Konfidenz",
+    "occurrences": "Vorkommen",
+    "bottleneck": "Engpass",
+    "rationale": "Begründung",
+    "expectedBenefit": "Erwarteter Nutzen",
+    "riskAssessment": "Risikobewertung",
+    "noPatterns": "Keine Muster erkannt",
+    "noPatternsDesc": "Es wurden noch keine Verbesserungsmuster oder Engpässe erkannt.",
+    "noProposals": "Keine Vorschläge",
+    "noProposalsDesc": "Es liegen noch keine Verbesserungsvorschläge vor.",
+    "status": {
+      "draft": "Entwurf",
+      "evaluating": "Wird bewertet",
+      "pending_approval": "Freigabe ausstehend",
+      "approved": "Genehmigt",
+      "rejected": "Abgelehnt",
+      "active": "Aktiv",
+      "rolled_back": "Zurückgesetzt",
+      "expired": "Abgelaufen"
+    },
+    "patternTypes": {
+      "repetitive_sequence": "Wiederkehrende Sequenz",
+      "frequent_corrections": "Häufige Korrekturen",
+      "rejected_suggestions": "Abgelehnte Vorschläge",
+      "error_retries": "Fehler & Wiederholungen",
+      "repetitive_handoffs": "Wiederkehrende Übergaben"
+    }
   }
 }

frontend/src/i18n/locales/en.json

@@ -1353,5 +1353,43 @@
       "title": "Enable Knowledge & Workstream",
       "description": "Create wiki articles and connect humans, agents, and workflows in a unified stream."
     }
+  },
+  "improvement": {
+    "title": "Improvement Center",
+    "subtitle": "Controlled self-improvement — proposals, patterns and impact measurement.",
+    "proposals": "Improvement Proposals",
+    "patterns": "Detected Patterns & Bottlenecks",
+    "evidence": "Evidence",
+    "approve": "Approve",
+    "reject": "Reject",
+    "rollback": "Rollback",
+    "score": "Score",
+    "confidence": "Confidence",
+    "occurrences": "Occurrences",
+    "bottleneck": "Bottleneck",
+    "rationale": "Rationale",
+    "expectedBenefit": "Expected Benefit",
+    "riskAssessment": "Risk Assessment",
+    "noPatterns": "No patterns detected",
+    "noPatternsDesc": "No improvement patterns or bottlenecks have been detected yet.",
+    "noProposals": "No proposals",
+    "noProposalsDesc": "There are no improvement proposals yet.",
+    "status": {
+      "draft": "Draft",
+      "evaluating": "Evaluating",
+      "pending_approval": "Pending Approval",
+      "approved": "Approved",
+      "rejected": "Rejected",
+      "active": "Active",
+      "rolled_back": "Rolled Back",
+      "expired": "Expired"
+    },
+    "patternTypes": {
+      "repetitive_sequence": "Repetitive Sequence",
+      "frequent_corrections": "Frequent Corrections",
+      "rejected_suggestions": "Rejected Suggestions",
+      "error_retries": "Errors & Retries",
+      "repetitive_handoffs": "Repetitive Handoffs"
+    }
   }
 }