Fix #5177: Add Google Cloud Project ID setting for Gemini CLI

- Add project ID input field to GeminiCli settings component
- Add translation strings for project ID field with helpful descriptions
- Enables users to set custom project ID for enterprise/non-free tier access
- Backend support was already implemented, this adds the missing UI

webview-ui/src/components/settings/providers/GeminiCli.tsx

@@ -40,6 +40,17 @@ export const GeminiCli = ({ apiConfiguration, setApiConfigurationField }: Gemini
 				{t("settings:providers.geminiCli.oauthPathDescription")}
 			</div>
 
+			<VSCodeTextField
+				value={apiConfiguration?.geminiCliProjectId || ""}
+				onInput={handleInputChange("geminiCliProjectId")}
+				placeholder={t("settings:providers.geminiCli.projectIdPlaceholder")}
+				className="w-full">
+				<label className="block font-medium mb-1">{t("settings:providers.geminiCli.projectId")}</label>
+			</VSCodeTextField>
+			<div className="text-sm text-vscode-descriptionForeground -mt-2">
+				{t("settings:providers.geminiCli.projectIdDescription")}
+			</div>
+
 			<div className="text-sm text-vscode-descriptionForeground mt-3">
 				{t("settings:providers.geminiCli.description")}
 			</div>

webview-ui/src/i18n/locales/en/settings.json

@@ -313,6 +313,9 @@
 			"description": "This provider uses OAuth authentication from the Gemini CLI tool and does not require API keys.",
 			"oauthPath": "OAuth Credentials Path (optional)",
 			"oauthPathDescription": "Path to the OAuth credentials file. Leave empty to use the default location (~/.gemini/oauth_creds.json).",
+			"projectId": "Google Cloud Project ID (optional)",
+			"projectIdDescription": "Specify your Google Cloud Project ID for enterprise or non-free tier access. Leave empty for automatic project discovery with personal accounts.",
+			"projectIdPlaceholder": "e.g., my-project-id",
 			"instructions": "If you haven't authenticated yet, please run",
 			"instructionsContinued": "in your terminal first.",
 			"setupLink": "Gemini CLI Setup Instructions",