🐛 fix(conversation-flow): prevent infinite recursion in assistant chain#15288
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…chains collectAssistantChain checked `processedIds` for loop protection but never populated it, so when a topic contains duplicated tool_call_ids (the same tool result reachable from multiple assistant messages) the assistant→tool→ assistant walk revisited already-seen assistants and recursed without bound, crashing the conversation view with "Maximum call stack size exceeded". Mark each assistant visited up front. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## canary #15288 +/- ##
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Coverage 71.03% 71.03%
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Files 3172 3172
Lines 317486 317488 +2
Branches 27919 34577 +6658
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+ Hits 225535 225539 +4
+ Misses 91782 91780 -2
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Regression test for the duplicate-tool_call_id cycle that previously overflowed the stack: two assistant turns declaring the same tool_call_id make one turn's tool result resolvable from the other, so the assistant→tool→assistant walk revisits an already-collected assistant. Asserts the walk terminates and collects each assistant once, plus a control case for a normal acyclic chain. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…sistantChain The cycle guard stopped the infinite recursion but, with a duplicated tool_call_id, collectToolMessages can surface an earlier turn's tool result before the current assistant's own. Its child is an already-visited assistant, so the recursive call is a no-op — yet the unconditional return after it made the walk stop there and silently drop the current turn's real continuation under a later tool. Skip already-processed followers so the loop advances to the current assistant's own tool result. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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May 29, 2026
# 🚀 LobeHub Release (20260528) **Release Date:** May 28, 2026 **Since v2.2.0:** 220 merged PRs · 15 contributors > This cycle brings heterogeneous "platform agents" you can dispatch to local or remote devices, a rebuilt onboarding flow, document-centric chat, and a unified model-runtime error model — with new DeepSeek V4 and Gemini 3.5 Flash support along the way. --- ## ✨ Highlights - **More Hetero Agents (OpenClaw / Hermes)** — Create heterogeneous agents and dispatch them to local or remote devices through the device gateway, with an execution-target switcher in the composer and persistent CLI sessions. (#15065, #15179, #15022) - **iMessage on Desktop** — New iMessage setup and bridge on desktop, plus bot attachments across every platform. (#15228, #15227, #15029) - **Skills in the Composer** — Drag skill chips into chat, trigger installed skills from the slash menu mid-line, and surface project-level skills in the homogeneous agent runtime. (#15095, #15061, #15110) - **New Models** — DeepSeek V4 Flash/Pro and Gemini 3.5 Flash across providers, with thinking params for structured output and chat cost estimates. (#15031, #15001, #15051, #14876) - **Agent Runtime Observability** — OpenTelemetry GenAI semantic conventions plus per-call generation tracing. (#15123, #15124) --- ## 🤖 Agents & Heterogeneous Runtime - **Platform agent creation** — OpenClaw/Hermes creation UI, device guard, and remote dispatch backend. (#15065) - **Execution-target switcher** — Pick local vs remote execution directly in the composer; device-selection UX with actionable guidance. (#15179, #15111) - **CLI hetero dispatch** — OpenClaw/Hermes dispatch with persistent sessions and a notify protocol. (#15022) - **Gateway snapshot as source of truth** — Consume the gateway `uiMessages` snapshot at step boundaries to keep chat state consistent. (#15153, #15152) - **Client sub-agent as a normal tool call** — Simplifies the sub-agent execution path. (#15281) - **Hermes agent chain** — Implements the Hermes agent chain logic. (#15189) - **Device registry** — TRPC endpoints to register, list, update, and remove devices. (#15299) - **Desktop device routing** — Route gateway agent runs through `lh hetero exec`; restore `userId` in gateway dispatch and gate local-system by execution target. (#15132, #15232) - **Agent signals** — Anchor agent-signal receipts to messages and isolate memory-agent messages into a child thread. (#14969, #14921) --- ## 🚀 Onboarding - **Simplified first screen** — Defer topic creation to first send. (#15090) - **Market Agent Picker** — Added as a classic onboarding step, with template prefetch. (#14980, #15041) - **Welcome guidance** — Show agent welcome guidance on first run. (#15098) - **Mobile** — Adapt agent onboarding UI and restore Classic-step padding on mobile. (#15019, #15032) - **Discovery** — Streamline discovery to a single profession question. (#14987) - **Analytics** — Track onboarding step events and create-agent modal source. (#15133, #15028) --- ## 📄 Documents, Pages & Knowledge - **Thread chat in preview** — Embed thread chat in the document preview portal. (#15216) - **Non-markdown rendering** — Render non-markdown docs as a read-only highlight. (#15272) - **Multi-select** — Multi-select delete in the document tree. (#15125) - **Page-agent streaming** — Preview `initPage` streaming arguments. (#15039) - **Per-agent topics** — Per-agent topic management page. (#15207) - **Server-side category** — Derive document category server-side and drop frontend predicates. (#15076) --- ## 🧩 Skills & Tools - **Drag skill chips** — Drag skills into chat input and register agent-document skills. (#15095) - **Slash menu** — Installed skills appear in the slash menu with a mid-line trigger. (#15061) - **Project skills** — Recognize project-level skills in the homogeneous agent runtime and surface them regardless of active device. (#15110, #15177) - **VFS archiving** — Archive oversized tool results to VFS instead of truncating. (#15074) - **@localfile mentions** — Drag folders into chat input as `@localFile` mentions on desktop. (#15071) --- ## 🧠 Model Runtime & Providers - **Error spec registry** — Unify error codes into a spec + pattern registry, split `ProviderBizError` into finer codes, classify Cloud-only codes via a tier digit, and add `DatabasePersistError`. (#15262, #15286, #15278, #15279) - **New models** — DeepSeek V4 Flash/Pro (opencode-go) and Gemini 3.5 Flash; DeepSeek V4 Pro on SiliconCloud. (#15031, #15001, #15017, #15267) - **Structured output** — Thinking params for structured output, Bedrock structured generation, and DeepSeek `generateObject` tool choice. (#15051, #15174, #15054) - **Cost** — Chat cost estimate support; preserve usage cost in custom streams. (#14876, #15218) --- ## 💬 Chat & User Experience - **Follow-up chips** — Extend follow-up chip suggestions to general chat with scene-specific model config. (#15101, #14797) - **Input drafts** — Persist unsent input drafts across tab switches and prevent repeated draft restore. (#14992, #15024) - **Command menu** — Order topic/message search by recency and promote inline type filters. (#15094, #14986) - **Zoom HUD** — Show a zoom-level HUD on Cmd +/− and Cmd 0. (#15294) - **Copy** — Unescape markdown escapes when copying user messages. (#15253) --- ## 🖥️ Desktop - **App Nap fix** — Prevent App Nap from dropping the gateway WebSocket during display sleep. (#14994) - **File preview** — Preview `.cjs`/`.mjs`/no-extension files instead of binary fallback and expand `~` when opening local files. (#15168, #15284) - **Cross-platform settings** — Open settings via main-window navigation on Windows/Linux and restore the route after an update restart. (#15036, #14922) - **Token refresh** — Prevent frequent logout from token-refresh retries. (#14928) --- ## 📊 Observability - **OTel GenAI** — Instrument Agent Runtime with OpenTelemetry GenAI semantic conventions. (#15123) - **Generation tracing** — Per-call `llm_generation_tracing` with a pre-allocated tracingId and recordFeedback router. (#15124, #15146) - **Error classification** — Persist `ERROR_CODE_SPECS` classification on operation errors. (#15273) --- ## 🗃️ Database Migrations - **Batch migrations** — Topic usage stats, push tokens, `tasks.editor_data`, and document shares. (#15280) - **Tracing & eval tables** — Add `llm_generation_tracing` and agent eval experiment tables. (#15126) > Self-hosted operators should run the database migration (`pnpm db:migrate`, or restart with auto-migrate enabled) after upgrading. The changes are additive and backwards-compatible. --- ## 🔒 Security & Reliability - **Security:** Remove the `getPlaintextCred` tool to prevent plaintext credential exposure. (#14998) - **Security:** Prompt account selection for Google OAuth and add `prompt=consent` to the OIDC authorization URL to fix missing refresh tokens. (#15234, #15010) - **Reliability:** Preserve streamed content across a mid-stream cancel. (#15173) - **Reliability:** Bound the Redis command timeout and configure the Anthropic client timeout. (#15091, #15042) - **Reliability:** Prevent infinite recursion in the assistant chain. (#15288) --- ## 👥 Contributors Huge thanks to **15 contributors** who shipped **220 merged PRs** this cycle. @AnotiaWang · @sxjeru · @algojogacor · @hardy-one · @arvinxx · @Innei · @tjx666 · @lijian · @AmAzing129 · @rdmclin2 · @neko · @cy948 · @CanisMinor · @sudongyuer · @rivertwilight Plus @lobehubbot and renovate[bot] for maintenance. --- **Full Changelog**: v2.2.0...release/weekly-20260528
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Summary
MessageCollector.collectAssistantChaincheckedprocessedIdsas its only loop guard but never populated it —processedIds.add(...)was missing — so the guard was dead.tool_call_ids (the same tool result reachable from multiple assistant messages), theassistant → tool → assistantwalk revisits already-seen assistants and recurses without bound, throwingRangeError: Maximum call stack size exceeded. The error boundary then blanks the entire conversation view.processedIds.add(currentAssistant.id)), matching thevisited-set pattern the sibling tree-walk helpers already use. The caller (FlatListBuilder) already marks chain members processed after the call, so this is consistent and safe.This is a defensive render-layer fix — the conversation transform should never infinite-loop on any data shape, regardless of how the duplicated ids got persisted.
Test plan
tool_call_ids —Maximum call stack size exceededincollectAssistantChain.🤖 Generated with Claude Code