refactor: align package folder names with npm package names

Rename packages/ subdirectories to match their @united-workforce/* scope:
  cli-workflow → cli
  workflow-agent-builtin → agent-builtin
  workflow-agent-claude-code → agent-claude-code
  workflow-agent-hermes → agent-hermes
  workflow-dashboard → dashboard
  workflow-protocol → protocol
  workflow-util-agent → util-agent
  workflow-util → util

Updated all tsconfig references, scripts, and active docs.
Historical docs (docs/plans/, docs/superpowers/) left as-is.

Closes #21

tsconfig.json

@@ -18,12 +18,12 @@
     "types": ["bun-types", "node"]
   },
   "references": [
-    { "path": "packages/workflow-util" },
-    { "path": "packages/workflow-protocol" },
-    { "path": "packages/workflow-util-agent" },
-    { "path": "packages/workflow-agent-hermes" },
-    { "path": "packages/workflow-agent-builtin" },
-    { "path": "packages/workflow-agent-claude-code" },
-    { "path": "packages/cli-workflow" }
+    { "path": "packages/util" },
+    { "path": "packages/protocol" },
+    { "path": "packages/util-agent" },
+    { "path": "packages/agent-hermes" },
+    { "path": "packages/agent-builtin" },
+    { "path": "packages/agent-claude-code" },
+    { "path": "packages/cli" }
   ]
 }