feat: RoutingWorkflow + LLM Router + Memory Activity

- Add RoutingWorkflow: generic state machine executor for WorkflowSpec
- Add LLM Router: natural language → WorkflowSpec generation
- Add RetrieveMemoryActivity: query poimen-memory for context
- Add activities: AnalyzeCode, SecurityScan, GenerateReport, Notify, etc.
- Add agent-prompts/router: LLM prompt documentation
- Extend starter with --route flag for routing workflows
- Remove orchestrator job (trigger via API/message instead)
- Clean up: move docs to Desktop, add .gitignore for *.md

internal/routing/activity_knowledge_base.json

@@ -341,10 +341,76 @@
         "dependencies": [],
         "notes": "Network-dependent. May fail on network issues or service throttling. Retry 2x."
       }
+    },
+    {
+      "name": "RetrieveMemoryActivity",
+      "description": "Retrieve relevant knowledge, skills, and lessons from poimen-memory semantic search",
+      "category": "memory",
+      "inputs": {
+        "query": {
+          "type": "string",
+          "description": "Semantic search query",
+          "required": true
+        },
+        "project": {
+          "type": "string",
+          "description": "Memory project (default: poimen)",
+          "required": false,
+          "default": "poimen"
+        },
+        "scope": {
+          "type": "string",
+          "description": "Retrieval scope: skills, lessons, references, all",
+          "required": false,
+          "default": "all"
+        },
+        "limit": {
+          "type": "integer",
+          "description": "Max results to return",
+          "required": false,
+          "default": 10
+        },
+        "tool": {
+          "type": "string",
+          "description": "Tool context for skill matching",
+          "required": false
+        },
+        "task": {
+          "type": "string",
+          "description": "Task description for context retrieval",
+          "required": false
+        }
+      },
+      "outputs": {
+        "skills": {
+          "type": "array",
+          "description": "Relevant skills found"
+        },
+        "lessons": {
+          "type": "array",
+          "description": "Relevant lessons/knowledge found"
+        },
+        "references": {
+          "type": "array",
+          "description": "Reference documents found"
+        },
+        "totalResults": {
+          "type": "integer",
+          "description": "Total results found"
+        }
+      },
+      "constraints": {
+        "defaultTimeout": "30s",
+        "isFlaky": true,
+        "recommendedRetries": 2,
+        "retryBackoff": 1.5,
+        "dependencies": [],
+        "notes": "Network-dependent. First activity to run for context-aware routing. Fast timeout."
+      }
     }
   ],
   "metadata": {
-    "totalActivities": 8,
+    "totalActivities": 9,
     "lastUpdated": "2025-08-31T00:00:00Z",
     "categories": {
       "repository": 1,
@@ -354,7 +420,8 @@
       "deployment": 1,
       "notification": 1,
       "approval": 1,
-      "storage": 1
+      "storage": 1,
+      "memory": 1
     }
   }
 }