📦 Release v2.2.0

This release was automatically published from PR [#14915].

Changes

See PR description: https://github.com/lobehub/lobehub/pull/14915

Commit Message

🚀 LobeHub Release (20260518)

Release Date: May 18, 2026
Since v2.1.58: 208 merged PRs · 209 commits · 16 contributors

v2.2.0 introduces the Chief Agent Operator — an agent that runs itself end-to-end. It self-iterates against its own output, assembles sub-agent teams on demand through the heterogeneous runtime, and drives a unified task system that knows when to pause for a human. Self-review, AssistantGroup, and tasks/scheduling all converge into one operator surface.

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✨ Highlights

🎩 Chief Agent Operator

• Self-iteration exits Lab — Agent Signal's self-review pipeline ships proposal actions straight into briefs and auto-executes the approved follow-ups, with prompts hardened against eval. The operator now critiques and re-runs its own work without a human in the loop. (#14769, [#14583], [#14647], [#14882])
• Auto-formed agent teams — Heterogeneous AssistantGroup gains Monitor-style signal callbacks, read-only SubAgent threads with breadcrumb headers, and a thread switcher. The operator dispatches sub-agents and you can step into any branch to see what the team is doing. (#14859, [#14658], [#14845], [#14715])
• Task system as the operator's runway — Claude Code surfaces task tools, AskUserQuestion freeform notes, and a dedicated waitingForHuman topic status; lobe-task exposes setTaskSchedule; the scheduler is hardened (maxExecutions cap, sub-10min heartbeat block, race-free SchedulerForm). Long-running operator runs no longer go silent and stop themselves when human input is needed. (#14870, [#14639], [#14713], [#14865], [#14853])

🚀 Cloud & runtime

• Cloud Claude Code V3 — Repo picker, GitHub token flow, and sandbox-aware context bring cloud-hosted Claude Code to feature parity with local; cloud sandbox completion now triggers the task lifecycle end-to-end. (#14568, [#14822], [#14681])
• Heterogeneous agent multi-replica safety — Subagent threads, ingest refresh, and parallel-tool counts now survive replica swaps without losing parent_id or rolling back tool state. (#14897, [#14631], [#14806], [#14838])
• Built-in tool lifecycle hooks — onBeforeCall / onAfterCall land on the built-in tool runtime; sub-agent dispatch moves to lobe-agent; self-iteration aligns with the shared inspector pattern. (#14719, [#14715], [#14827])
• Knowledge base RAG unified — Client and server share one KnowledgeBaseSearchService; KB files preserved on NoSuchKey instead of silently lost. (#14673, [#14501])

💬 Workspace experience

• Home daily brief + recommendations — The home screen opens with a linkable welcome, paired input hint, and a recommendations module sourced from the operator's hetero action library. (#14589, [#14645], [#14770])
• Chat mode + redesigned action bar — The chat input gains a Chat/Agent mode toggle and a re-pitched action bar with icon-and-color action tag chips. (#14774, [#14903], [#14846])
• Documents tree, optimistic — Document tree creates, deletes, and inline renames now apply optimistically; the agent-documents index hides web crawls and switches to a table layout. (#14714, [#14292])
• Branded MCP inspectors — Linear MCP tool calls render with the same branded inspector as the built-in Linear skill; CC MCP and built-in skills now share inspector code. (#14864, [#14884])
• Bot identity gating — Device tools are gated by sender identity, the activator bypass is closed, and Slack mpim plus Discord DM regressions are fixed. (#14634, [#14664], [#14733])

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🏗️ Core Agent & Signal Pipeline

Self-iteration & Agent Signal

• Self-iteration graduates out of Lab, with service, tool, name, and concept structure unified across agent-signal, prompts, database, and builtin-tool-self-iteration. (#14699, [#14769])
• Self-review now proposes actions to briefs and auto-executes the approved set, with eval-verified prompt hardening. (#14583, [#14657], [#14647])
• Self-iteration built-in tool aligns with the shared runtime + inspector patterns. (#14827)
• Agent Signal prompts adapt their response language and avoid blocking agent execution. (#14890, [#14775], [#14882])
• Receipt descriptions now carry an Agent Signal marker, and self-review hinted skill documents route correctly. (#14764, [#14895])

Heterogeneous agent runtime

• Subagent threads render read-only with a breadcrumb header and thread switcher; SUBAGENT badge dropped, indentation tightened. (#14658, [#14845], [#14783])
• Multi-replica safety: ingest refresh restores tools/model from DB to fix parent_id breaks; new-step assistants sync across replicas; subagent-tagged events no longer leak into the main gateway handler. (#14897, [#14631], [#14838])
• Fetch-triggering events are deferred to keep parallel tool counts from rolling back. (#14806)
• AskUserQuestion is wired for Claude Code, with auto-decline disabled and a freeform note input on the cloud side; waitingForHuman is a first-class topic status. (#14639, [#14629], [#14870])
• AssistantGroup gains Monitor-style signal callbacks; project skills surface in the working sidebar and markdown preview. (#14859, [#14896])
• Cloud Claude Code V3 — repo picker, GitHub token, sandbox context; credentials alert and disabled input when not configured. (#14568, [#14822])
• Cloud sandbox completion now triggers the task lifecycle end-to-end. (#14681)

Agent runtime & context engine

• Built-in tool runtime gets onBeforeCall / onAfterCall lifecycle hooks. (#14719)
• CompletionLifecycle, HumanInterventionHandler, and stepPresentation are extracted from the runtime monolith. (#14441)
• Per-tool timeout is honored end-to-end for client tool dispatch. (#14817)
• Compression budget accounts for tool_calls, reasoning content, and tool defs; call_llm forwards tools into the budget. (#14813, [#14837])
• Pre-flight context check now fails fast for OpenAI-compatible providers. (#14824)
• Malformed tool_call names are recovered instead of finishing the step silently. (#14577)
• Sub-agent dispatch moves from lobe-gtd to lobe-agent. (#14715)
• Hidden built-in tools now appear in the system prompt @-mention list. (#14823)

Agent tracing & operations

• New agent_operations table and runtime persistence for every hetero-agent operation. (#14416, [#14736])
• signOperationJwt issues 4-hour signed operation tokens. (#14586)
• S3 trace snapshots are zstd-compressed; DB trace_s3_key aligns with the .json.zst suffix; legacy .json fallback preserved on fetch. (#14807, [#14860], [#14826])

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📱 Platform & Integrations

Bot / Channels

• Device tools are gated by sender identity. (#14634)
• Activator bypass closed and device-access checks converged. (#14664)
• Slack mpim supported; Discord DM regression fixed; Slack connect + slash commands repaired. (#14733, [#14591])
• Bot channels, bot watch, bot callback service, and system bot reliability fixes. (#14847, [#14796], [#14570], [#14784], [#14649])
• Online Messager scaffolding. (#14755)

Onboarding

• Home daily brief with linkable welcome and paired input hint. (#14589)
• Recommendations module sourced from the hetero agent action library. (#14645)
• Chat onboarding passes request triggers via metadata and preserves the resume request. (#14770, [#14798])
• Discovery turn progress gated by phase, with a reminder on stalled discovery. (#14842, [#14833])
• FullNameStep back button rejoins the shared prefix; ModeSwitch hidden in production. (#14898, [#14760])
• Agent marketplace folds into the web onboarding tool. (#14578, [#14672])
• Onboarding interests stored as keys instead of free text; early-exit skips marketplace and drops CJK prompts. (#14624, [#14598])

Model providers

• Gemini 3.1 Flash-Lite cards; Gemini schema sanitizer drops non-compliant enum / required; zero cachedContentTokenCount handled in usage conversion. (#14604, [#14740], [#14567])
• DeepSeek-V4 model cards and pricing restored to official rates. (#14110, [#14911])
• ernie-5.1 and spark-x2-flash support; Grok 4.3 reasoning_effort support. (#14643, [#14731], [#14642])
• SiliconCloud catalog synced with API; duplicates removed; reasoning params adjusted. (#14464)
• Minimax derives max_tokens from context window to avoid ExceededContextWindow. (#14814)
• aihubmix uses the full models endpoint for a complete list; stale empty-apiKey test dropped. (#14511, [#14669])
• Stream parse errors are enriched with provider + model context. (#14636)
• Visual content parts are consumed in the server runtime; video image references move to a JSON object. (#14637, [#14900])
• Google function call magic thoughtSignature now attaches to every part, not just the last turn. (#14904)
• Service model assignments settings added; model extend-param options removed. (#14712, [#14607])

Built-in tools & knowledge base

• lobe-task exposes setTaskSchedule; task scheduler hardened (maxExecutions cap, sub-10min heartbeat blocked, SchedulerForm race fix, rapid automation-mode toggle stabilized). (#14713, [#14865], [#14853], [#14801])
• KnowledgeBaseSearchService shares RAG runtime across client and server. (#14673)
• KB files preserved on NoSuchKey and orphan documents/tasks cleaned. (#14501)
• Document tree gets optimistic create/delete + inline rename. (#14714)
• agent-documents index hides web crawls and switches to a table layout. (#14292)
• lobe-clarify and SKILL.md frontmatter parsing/edit validation are unified. (#14566)
• AnalyzeVisualMedia inspector + Portal HTML preview refactor; HTML preview restored for AssistantGroup messages. (#14777, [#14811])
• Branded inspector shared between CC MCP and built-in Linear skill. (#14884, [#14864])

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🖥️ CLI & User Experience

Chat & Conversation

• Chat mode toggle and redesigned chat input action bar. (#14774)
• Action tag chips switch to icon + colored label; ActionDropdown closes on sibling-open and focus-out; submenu uses native header/footer slots. (#14903, [#14802], [#14901])
• Action bar padding equalized around the send button; skeleton shows in action bar while config loads. (#14846, [#14656])
• useCmdEnterToSend is respected in thread & task inputs; send button enables after pasting into thread/comment input. (#14850, [#14816])
• TopicChatDrawer state preserved during close animation. (#14803)
• Only the last assistant block animates during markdown streaming. (#14906)
• Right working panel no longer auto-collapses on chat mount; home agent config fetched so knowledge toggles reflect in UI. (#14883, [#14834])

Tasks

• Task scheduler, hotkey, comment, and TodoList polish. (#14707)
• Add Subtask button & card baseline aligned; activity card stop run; task agent manager polish. (#14848, [#14559], [#14569])
• Task template skeleton CLS reduced; task page placeholder copy refreshed. (#14788, [#14704])
• Task agent model snapshotted into task.config at create time. (#14670)
• User-feedback card, task card polish, and Run-now context menu in markdown. (#14727)
• Inline skill auth in recommended task templates. (#14676)

Navigation & Layout

• Tab bar gains a Chrome-style divider between inactive tabs. (#14892)
• SideBarDrawer & header layout polish; nav ActionIcon sizing unified; TodoList encapsulation improved. (#14762, [#14692])
• Desktop header icons, sidebar density, and task menus polished. (#14724)
• Standardized header action icon sizes. (#14717)
• Chat topic title length increased; copy session ID added to topic dropdown menu. (#14659, [#14595])
• Heterogeneous agent topic rows regain indentation. (#14783)

Other polish

• Usage token details shortened; tool execution time formatted as Xmin Ys. (#14849, [#14641])
• Tool arguments display gets word-wrap toggle; long tool-call params wrap instead of truncate. (#14706, [#14640])
• Editor stops showing per-line placeholder once content is present. (#14852)
• Visible divider between queued messages; intervention confirmation bar polished. (#14593, [#14587])
• Credit top-up copy refreshed; auth captcha retry copy refreshed; brief recommendations layout polished. (#14821, [#14561], [#14871])

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🔧 Tooling & Developer Experience

• Dev-only feature flag override panel. (#14565)
• __DEV__ define replaces process.env.NODE_ENV in the SPA. (#14696)
• Agent-settings drops Meta/Documents tabs and restores inputTemplate. (#14874)
• local-system forwards all grepContent params and moves the executor to /client. (#14888)
• lobe-task and setTaskSchedule exposed. (#14713)
• Memory user-memory benchmark agent config and source-id extraction schemas. (#14779, [#14778])
• CLI man page drops stale cron entry; clearMessages hotkey removed. (#14709, [#14906])
• Skill docs simplified; cloud heteroContext gains sandbox TTL + public-repo fork push guide. (#14785, [#14761])

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🔒 Security & Reliability

• Security: Sensitive comments and examples sanitized from the production JS bundle. (#14557)
• Security: Inactive OIDC access rejected. (#14674)
• Security: CASC new Function() template replaced with safe string builders. (#14751)
• Security: Sign-in captcha flow removed in favor of safer flow. (#14573)
• Security: Desktop local file previews restricted to safe roots. (#14789)
• Security: Image binary capped at 3.75 MB so base64 payload stays under the Anthropic 5 MB limit. (#14711)
• Reliability: Neon/Node pools get error listeners to prevent Lambda crashes. (#14606)
• Reliability: paradedb.match(...) replaces hardcoded normalizer in memory search. (#14590)
• Reliability: PlaceholderVariablesProcessor errors carry diagnostic context. (#14741)
• Reliability: File storage upload checks are serialized; multiple account link bug fixed. (#14829, [#14562])
• Reliability: ScrollShadow replaced with ScrollArea to fix a React infinite render loop (error code 185). (#14689)
• Reliability: Embedding token cap enforced — long memory queries are limited and truncated before search. (#14757)
• Reliability: Embed binary blob guard + oversized output cap in local-system.readFile. (#14602)
• Reliability: Windows npm CLI shims resolved before spawning agents. (#14772, [#14720])
• Reliability: Vite pinned to 8.0.12 to avoid the rolldown 1.0.1 preload regression; desktop runtime externals split from native deps. (#14804, [#14776])
• Reliability: Old lobehub cron job removed; WeChat URL rules dropped from web crawler. (#14630, [#14633])

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👥 Contributors

Huge thanks to 16 contributors who shipped 208 merged PRs this cycle.

@hezhijie0327 · @sxjeru · @hardy-one · @Bianzinan · @brone1323 · @YuSaZh · @Wxh16144 · @arvinxx · @Innei · @tjx666 · @Neko · @LiJian · @Rdmclin2 · @sudongyuer · @AmAzing129 · @rivertwilight

Plus @lobehubbot for maintenance translations.

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Full Changelog: https://github.com/lobehub/lobe-chat/compare/v2.1.58...v2.2.0