fix: address review feedback for launcher behavior and links

- point all repository links to Gitlawb/openclaude
- make shim opt-in by default to preserve Anthropic-first flow
- add command availability check with first-run install guidance
- render runtime and shim state dynamically in control center
- make command palette shortcut hint platform-aware

vscode-extension/openclaude-vscode/package.json

@@ -70,8 +70,8 @@
         },
         "openclaude.useOpenAIShim": {
           "type": "boolean",
-          "default": true,
-          "description": "Set CLAUDE_CODE_USE_OPENAI=1 in launched OpenClaude terminals."
+          "default": false,
+          "description": "Optionally set CLAUDE_CODE_USE_OPENAI=1 in launched OpenClaude terminals."
         }
       }
     },
@@ -96,7 +96,7 @@
   ],
   "repository": {
     "type": "git",
-    "url": "https://github.com/devNull-bootloader/openclaude"
+    "url": "https://github.com/Gitlawb/openclaude"
   },
   "license": "MIT"
 }