fix: address review feedback on vscode-web docs and test

- Correct the Coder integration note: the health check probes /version,
  not /healthz (which the standalone web server does not expose), and
  regenerate the README accordingly.
- Pass the extensions scenario option as the canonical comma-separated
  string instead of relying on the CLI's array-to-string coercion.

Author: schnell3526

src/vscode-web/NOTES.md

@@ -47,6 +47,7 @@ append `?folder=/path/to/folder` to the URL.
 ## Coder integration
 
 When used inside a [Coder workspace with dev container support](https://coder.com/docs/admin/templates/extending-templates/devcontainers),
-the feature registers a `vscode-web` app (with a `/healthz` health check) on
-the workspace dashboard via `customizations.coder.apps`. The `app*` options
+the feature registers a `vscode-web` app on the workspace dashboard via
+`customizations.coder.apps`. Its health check probes the `/version` endpoint
+(the standalone web server exposes no `/healthz`). The `app*` options
 only affect this Coder app metadata, not the server itself.

src/vscode-web/README.md

@@ -84,8 +84,9 @@ append `?folder=/path/to/folder` to the URL.
 ## Coder integration
 
 When used inside a [Coder workspace with dev container support](https://coder.com/docs/admin/templates/extending-templates/devcontainers),
-the feature registers a `vscode-web` app (with a `/healthz` health check) on
-the workspace dashboard via `customizations.coder.apps`. The `app*` options
+the feature registers a `vscode-web` app on the workspace dashboard via
+`customizations.coder.apps`. Its health check probes the `/version` endpoint
+(the standalone web server exposes no `/healthz`). The `app*` options
 only affect this Coder app metadata, not the server itself.
 
 

test/vscode-web/scenarios.json

@@ -38,7 +38,7 @@
         "features": {
             "vscode-web": {
                 "acceptLicenseTerms": true,
-                "extensions": ["tamasfe.even-better-toml", "redhat.vscode-yaml"]
+                "extensions": "tamasfe.even-better-toml,redhat.vscode-yaml"
             }
         }
     },