- 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)

- Discord/groups: tell Discord-channel agents to wrap bare URLs as `<https://example.com>` so link previews do not expand into uninvited embeds. (#78614)

- Agents/fallback: fail fast on session write-lock timeouts instead of trying fallback models for local file contention. Fixes #66646. Thanks @sallyom.

- Telegram/Codex: generate DM topic labels with Codex-compatible simple-completion requests so auto-created private topics can be renamed instead of staying `New Chat`.

- Plugins/runtime fetch: drop third-party symbol metadata from plain request header dictionaries before passing them into native `fetch` or `Headers`, so SDK and guarded/proxy fetch paths do not reject otherwise valid plugin requests. Fixes #77846. Thanks @shakkernerd.

- Web fetch: bound guarded dispatcher cleanup after request timeouts so timed-out fetches return tool errors instead of leaving Gateway tool lanes active. (#78439) Thanks @obviyus.