fix: improve npm publish diagnostics

Add npm auth checks before publish and normalize repository metadata so npm publishing failures are easier to diagnose in CI.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: 王璨

.github/workflows/publish.yml

@@ -54,6 +54,12 @@ jobs:
         with:
           node-version: "22"
           registry-url: "https://registry.npmjs.org"
+      - name: Verify npm authentication
+        run: |
+          npm whoami
+          npm ping
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
       - run: cd dist-standalone && npm publish --access public
         env:
           NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

package.json

@@ -25,7 +25,7 @@
   },
   "repository": {
     "type": "git",
-    "url": "https://github.com/wangcan26/dscode"
+    "url": "git+https://github.com/wangcan26/dscode.git"
   },
   "keywords": [
     "deepseek",