fix: clarify gog-based google chat setup

docs/channels/googlechat.md

@@ -57,6 +57,7 @@ If you already use `gog` for Google Workspace, you can reuse its OAuth client +
    ```bash
    gog auth credentials /path/to/client_secret.json
    gog auth add you@example.com --services gmail,calendar,drive,contacts,docs,sheets
+   gog auth list
    ```
 2) Configure Google Chat to reuse `gog`:
    ```json5
@@ -74,6 +75,11 @@ If you already use `gog` for Google Workspace, you can reuse its OAuth client +
 3) Ensure `gog` can access its keyring on the gateway host.
    - `gog` stores refresh tokens in the system keychain by default. citeturn6view0
    - For headless systems, switch to file keyring + password (see `gog` docs). citeturn6view0
+4) Verify `gog` is visible to the gateway user:
+   ```bash
+   gog auth tokens --json
+   ```
+   If this fails, install `gog` on the gateway host and ensure the keyring is accessible.
 
 Clawdbot reads `gog` OAuth client files from:
 - `~/.config/gogcli/credentials.json`

extensions/googlechat/src/channel.ts

@@ -167,6 +167,12 @@ export const googlechatPlugin: ChannelPlugin<ResolvedGoogleChatAccount> = {
         ],
       }),
     isConfigured: (account) => account.credentialSource !== "none",
+    unconfiguredReason: (account) => {
+      if (account.config.oauthFromGog) {
+        return "Google Chat OAuth from gog is enabled but no gog credentials were found. Ensure gog is installed, the gateway can access its keyring, or set oauthRefreshToken/oauthClientFile.";
+      }
+      return "Google Chat credentials are missing. Configure a service account or user OAuth.";
+    },
     describeAccount: (account) => ({
       accountId: account.accountId,
       name: account.name,

extensions/googlechat/src/monitor.ts

@@ -648,7 +648,7 @@ async function processMessageWithPipeline(params: {
   let typingIndicator = account.config.typingIndicator ?? "message";
   if (typingIndicator === "reaction" && account.userCredentialSource === "none") {
     runtime.error?.(
-      `[${account.accountId}] typingIndicator="reaction" requires user OAuth (not supported with service account). Falling back to "message" mode.`,
+      `[${account.accountId}] typingIndicator="reaction" requires user OAuth. Configure OAuth (or oauthFromGog) to enable reactions; falling back to "message" mode.`,
     );
     typingIndicator = "message";
   }