refactor(workflow): fix tsconfig references, template imports, delete old packages/workflow

- Update root tsconfig.json references: replace packages/workflow with 6 new packages
- Update cli-workflow tsconfig references to new packages
- Add tsconfig references to workflow-util, workflow-runtime, workflow-execute
- Fix workflow-agent-llm, workflow-agent-cursor, workflow-agent-hermes, workflow-util-agent
  tsconfig references (../workflow -> ../workflow-runtime)
- Remove stale @uncaged/workflow deps from agent package.json files
- Change template packages to import buildDescriptor from @uncaged/workflow-register
- Normalize package.json exports field across all new packages
- Delete old packages/workflow/ directory

packages/workflow-execute/package.json

@@ -2,8 +2,12 @@
   "name": "@uncaged/workflow-execute",
   "version": "0.2.0",
   "type": "module",
-  "main": "src/index.ts",
-  "types": "src/index.ts",
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "import": "./src/index.ts"
+    }
+  },
   "scripts": {
     "test": "bun test"
   },