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-652/task.json

@@ -1,14 +1,15 @@
 {
   "id": "KB-652",
   "description": "Openai-codex in model selector should use the openai logo",
-  "column": "in-progress",
+  "column": "in-review",
   "size": "S",
   "reviewLevel": 0,
-  "currentStep": 2,
+  "currentStep": 4,
   "worktree": "/Users/eclipxe/Projects/kb/.worktrees/eager-eagle",
+  "summary": "Successfully added `openai-codex` provider alias to display the OpenAI logo in the model selector. Added the mapping in `providerConfig` (ProviderIcon.tsx) with the same OpenAI icon and green color (#10a37f) as the `openai` entry. Added comprehensive test coverage including icon rendering and color verification tests. All 26 ProviderIcon tests pass, and the vite client build succeeds.",
   "createdAt": "2026-04-01T02:36:05.138Z",
-  "updatedAt": "2026-04-01T05:38:10.485Z",
-  "columnMovedAt": "2026-04-01T05:37:52.867Z",
+  "updatedAt": "2026-04-01T05:40:50.420Z",
+  "columnMovedAt": "2026-04-01T05:40:50.420Z",
   "dependencies": [],
   "steps": [
     {
@@ -21,11 +22,11 @@
     },
     {
       "name": "Testing & Verification",
-      "status": "in-progress"
+      "status": "done"
     },
     {
       "name": "Documentation & Delivery",
-      "status": "pending"
+      "status": "done"
     }
   ],
   "log": [
@@ -69,6 +70,27 @@
     {
       "timestamp": "2026-04-01T05:38:10.485Z",
       "action": "Step 2 (Testing & Verification) → in-progress"
+    },
+    {
+      "timestamp": "2026-04-01T05:40:19.271Z",
+      "action": "Step 2 (Testing & Verification) → done"
+    },
+    {
+      "timestamp": "2026-04-01T05:40:19.272Z",
+      "action": "Step 3 (Documentation & Delivery) → in-progress"
+    },
+    {
+      "timestamp": "2026-04-01T05:40:44.410Z",
+      "action": "Step 3 verification complete",
+      "outcome": "ProviderIcon tests: 26/26 passing. Vite client build: successful. Pre-existing TypeScript errors in mission-routes.ts are outside file scope and unrelated to this change."
+    },
+    {
+      "timestamp": "2026-04-01T05:40:45.607Z",
+      "action": "Step 3 (Documentation & Delivery) → done"
+    },
+    {
+      "timestamp": "2026-04-01T05:40:47.339Z",
+      "action": "Task marked done by agent"
     }
   ]
 }