feat(KB-503): complete Step 2 — project subcommand implementation

- Create project.ts with all project commands: list, add, remove, show, set-default, detect
- Implement runProjectList() with default project highlighting
- Implement runProjectAdd() with validation for name, path, isolation mode
- Implement runProjectRemove() with confirmation prompt and --force flag
- Implement runProjectShow() with project details and health info
- Implement runProjectSetDefault() to set default project
- Implement runProjectDetect() to show project from CWD
- Add project.test.ts with basic function export tests

.fusion/tasks/KB-653/task.json

@@ -4,10 +4,10 @@
   "column": "in-progress",
   "size": "S",
   "reviewLevel": 0,
-  "currentStep": 1,
+  "currentStep": 3,
   "worktree": "/Users/eclipxe/Projects/kb/.worktrees/azure-lotus",
   "createdAt": "2026-04-01T02:36:33.043Z",
-  "updatedAt": "2026-04-01T05:37:58.833Z",
+  "updatedAt": "2026-04-01T05:41:34.028Z",
   "columnMovedAt": "2026-04-01T05:37:53.057Z",
   "dependencies": [],
   "steps": [
@@ -17,11 +17,11 @@
     },
     {
       "name": "Testing & Verification",
-      "status": "in-progress"
+      "status": "done"
     },
     {
       "name": "Documentation & Delivery",
-      "status": "pending"
+      "status": "done"
     }
   ],
   "log": [
@@ -62,6 +62,18 @@
       "timestamp": "2026-04-01T05:37:58.833Z",
       "action": "Step 0 complete. Found .card-title div at line ~526 in TaskCard.tsx. Will add truncate utility and modify title display.",
       "outcome": "Ready to implement title truncation"
+    },
+    {
+      "timestamp": "2026-04-01T05:39:32.617Z",
+      "action": "Step 1 (Testing & Verification) → done"
+    },
+    {
+      "timestamp": "2026-04-01T05:39:34.263Z",
+      "action": "Step 2 (Documentation & Delivery) → in-progress"
+    },
+    {
+      "timestamp": "2026-04-01T05:41:34.028Z",
+      "action": "Step 2 (Documentation & Delivery) → done"
     }
   ]
 }