feat(agent-memory): UI fuer Agent-Memories mit semantischer Suche — Modul 8/16

Drittes Modul via Phase-Q-Manifest-Architektur: Registrierung komplett
ueber das agent_memory-Plugin-Manifest (page_route /agent-memory +
menu_item, Brain-Icon) — routes/index.tsx unangetastet. Komponenten-Map
mit 40 Eintraegen.

Zusaetzlicher Fix: Sidebar-ICON_MAP um Brain, Store, Tags erweitert —
Marketplace (Store) und Tags zeigten bisher Fallback-Icons, weil die
Manifest-Icons nicht in der kuratierten Map standen.

Backend existierte vollstaendig (create mit Embedding, list mit
agent_id-Pflichtfilter + Typ + Pagination, semantische Suche via pgvector,
update mit Embedding-Regeneration, delete; agent_memory:read/write),
Frontend hatte 0% Abdeckung.

- api/agentMemory.ts: TanStack-Hooks (useAgentMemories mit
  enabled-Gating, useAgentMemorySearch, create/update/delete)
- pages/AgentMemory.tsx: Agent-Picker (Pflichtfeld — Backend filtert
  zwingend nach agent_id), Pick-Agent-Prompt, semantische Suche mit
  Relevanz-Score-Badges und Clear, Memory-Karten mit Typ-Badges
  (fact/context/pattern/instruction), Create/Edit-Dialog, Delete mit
  Confirm — Aktionen hinter agent_memory:write
- i18n agentMemory.* + nav.agentMemory de/en

Verifikation: Vitest 11/11 (Agent-Picker-Pflicht, Pick-Prompt, Badges,
Suche mit Score + Clear, Create/Edit prefilled, Delete mit+ohne Confirm,
Gating, Empty/Error) · tsc exit 0 · production build exit 0 ·
Backend-Regressionen (route-order, m5-miniapps) 10/10 · compileall
sauber · Manifest-Check OK.

frontend/src/i18n/locales/de.json

@@ -25,7 +25,8 @@
     "approvals": "Freigaben",
     "delegations": "Delegationen",
     "marketplace": "Marketplace",
-    "skills": "Skills"
+    "skills": "Skills",
+    "agentMemory": "Agent Memory"
   },
   "auth": {
     "login": "Anmelden",
@@ -1788,5 +1789,36 @@
     "deleteConfirm": "Skill '{{name}}' wirklich loeschen?",
     "empty": "Keine Skills vorhanden.",
     "loadError": "Skills konnten nicht geladen werden."
+  },
+  "agentMemory": {
+    "title": "Agent Memory",
+    "agentLabel": "Agent",
+    "agentPlaceholder": "Agent auswaehlen",
+    "loadingAgents": "Lade Agenten...",
+    "pickAgent": "Bitte einen Agenten auswaehlen, um dessen Memories zu sehen.",
+    "create": "Memory erstellen",
+    "createTitle": "Neues Memory",
+    "createSubmit": "Erstellen",
+    "editTitle": "Memory bearbeiten",
+    "save": "Speichern",
+    "memoryType": "Typ",
+    "type_fact": "Fakt",
+    "type_context": "Kontext",
+    "type_pattern": "Muster",
+    "type_instruction": "Anweisung",
+    "content": "Inhalt",
+    "contentPlaceholder": "Was soll der Agent sich merken?",
+    "search": "Suchen",
+    "searchPlaceholder": "Semantische Suche... (Enter)",
+    "clearSearch": "Zuruecksetzen",
+    "searchResults": "{{count}} Treffer (semantisch)",
+    "noSearchResults": "Keine Treffer fuer diese Suche.",
+    "score": "Relevanz: {{score}}%",
+    "created": "Erstellt:",
+    "edit": "Bearbeiten",
+    "delete": "Loeschen",
+    "deleteConfirm": "Dieses Memory wirklich loeschen?",
+    "empty": "Keine Memories fuer diesen Agenten.",
+    "loadError": "Memories konnten nicht geladen werden."
   }
 }

frontend/src/i18n/locales/en.json

@@ -25,7 +25,8 @@
     "approvals": "Approvals",
     "delegations": "Delegations",
     "marketplace": "Marketplace",
-    "skills": "Skills"
+    "skills": "Skills",
+    "agentMemory": "Agent Memory"
   },
   "auth": {
     "login": "Sign In",
@@ -1788,5 +1789,36 @@
     "deleteConfirm": "Really delete skill '{{name}}'?",
     "empty": "No skills yet.",
     "loadError": "Failed to load skills."
+  },
+  "agentMemory": {
+    "title": "Agent Memory",
+    "agentLabel": "Agent",
+    "agentPlaceholder": "Select an agent",
+    "loadingAgents": "Loading agents...",
+    "pickAgent": "Pick an agent to see its memories.",
+    "create": "Create memory",
+    "createTitle": "New memory",
+    "createSubmit": "Create",
+    "editTitle": "Edit memory",
+    "save": "Save",
+    "memoryType": "Type",
+    "type_fact": "Fact",
+    "type_context": "Context",
+    "type_pattern": "Pattern",
+    "type_instruction": "Instruction",
+    "content": "Content",
+    "contentPlaceholder": "What should the agent remember?",
+    "search": "Search",
+    "searchPlaceholder": "Semantic search... (Enter)",
+    "clearSearch": "Clear",
+    "searchResults": "{{count}} matches (semantic)",
+    "noSearchResults": "No matches for this search.",
+    "score": "Relevance: {{score}}%",
+    "created": "Created:",
+    "edit": "Edit",
+    "delete": "Delete",
+    "deleteConfirm": "Really delete this memory?",
+    "empty": "No memories for this agent.",
+    "loadError": "Failed to load memories."
   }
 }