fix(cli/completion): guard shell profile source line with file-exists check (#78659)

CHANGELOG.md

@@ -124,6 +124,7 @@ Docs: https://docs.openclaw.ai
 
 ### Fixes
 
+- CLI/completion: guard the shell-profile source line written by `openclaw completion --install` with a file existence check (`[ -f ... ] && source ...` for bash/zsh, `test -f ...; and source ...` for fish) so uninstalling OpenClaw no longer makes new login shells error on a missing completion cache.
 - Cron/doctor: repair persisted cron jobs whose `payload.model` was stored as `"default"`, `"null"`, blank, or JSON `null` by removing the bad override during `openclaw doctor --fix` while keeping cron runtime model validation strict. Fixes #78549. Thanks @bizzle12368239.
 - Doctor/OpenAI Codex: revert the 2026.5.5 `doctor --fix` repair that rewrote valid `openai-codex/*` ChatGPT/Codex OAuth routes to `openai/*`, which could break OAuth-only GPT-5.5 setups or accidentally move users onto the OpenAI API-key route. If 2026.5.5 already changed your default model, run `openclaw models set openai-codex/gpt-5.5 && openclaw config validate` to switch the default agent back to the Codex OAuth PI route. Fixes #78407.
 - Discord/groups: instruct group-chat agents to stay silent when a message is addressed to someone else, replying only when invited or correcting key facts. (#78615)

src/cli/completion-runtime.ts

@@ -69,9 +69,9 @@ function formatCompletionSourceLine(
   cachePath: string,
 ): string {
   if (shell === "fish") {
-    return `source "${cachePath}"`;
+    return `test -f "${cachePath}"; and source "${cachePath}"`;
   }
-  return `source "${cachePath}"`;
+  return `[ -f "${cachePath}" ] && source "${cachePath}"`;
 }
 
 function isCompletionProfileHeader(line: string): boolean {