Added CHANGELOG to the release branch

2026-06-15 20:05:58 +00:00 · 2026-06-15 19:08:13 +08:00
parent 32df21585f
commit 6ac7be7c8e
2 changed files with 627 additions and 0 deletions
@@ -0,0 +1,326 @@
+# Changelog
+
+All notable changes to DeerFlow are documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/)
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [2.0.0] — 2026-06-15
+
+DeerFlow 2.0 is a ground-up rewrite around a "super agent" harness with
+sub-agents, persistent memory, sandbox execution, and an extensible
+skills/tools system. It shares no code with the 1.x line, which now lives on
+the [`main-1.x` branch](https://github.com/bytedance/deer-flow/tree/main-1.x).
+
+This release closes [milestone 2.0.0](https://github.com/bytedance/deer-flow/milestone/1)
+with **102 merged pull requests** since the first 2.0 milestone tag.
+
+### ⚠ Breaking changes
+
+- **harness:** Hydrate runs from `RunStore` and persist interrupted status. Run
+  cancellation/multitask semantics now require a working RunStore on the
+  worker that owns the run; cross-worker cancels return 409 instead of
+  silently appearing successful. ([#2932])
+
+### Added
+
+#### Agents & runtime
+- **agent:** Custom-agent self-updates with user isolation — agents can persist
+  edits to their own `SOUL.md` / `config.yaml` from inside a normal chat.
+  ([#2713])
+- **loop-detection:** Make loop detection configurable with per-tool frequency
+  overrides; keep configurable on/off switch. ([#2586], [#2711])
+- **loop-detection:** Defer warning injection so detector pairs cleanly with
+  tool-call lifecycle. ([#2752])
+- **run:** Propagate `model_name` from the gateway request through the runtime
+  and persistence stack into the SQLite-backed store. ([#2775])
+- **subagents:** Stream subagent token usage to the header via terminal task
+  events. ([#2882])
+
+#### Models & integrations
+- **models:** Add StepFun reasoning model adapter. ([#3461])
+- **community:** Add Brave Search web search tool. ([#3528])
+- **channels:** Enhance Discord with mention-only mode, thread routing, and
+  typing indicators. ([#2842])
+- **im:** Add user-owned IM channel connections — users can bind their own
+  Slack/Telegram/Discord/Feishu/DingTalk/WeChat/WeCom accounts on top of the
+  operator-configured bots. ([#3487])
+
+#### Observability
+- **trace:** Set the LangGraph trace name to `lead_agent` (or the custom
+  agent's `agent_name`) for cleaner Langfuse/LangSmith traces. ([#3101])
+- **frontend:** Refine token usage display modes. ([#2329])
+- **defaults:** Enable token usage tracking by default. ([#2841])
+- **defaults:** Raise default summarization trigger threshold. ([#3174])
+
+### Performance
+
+- **harness:** Push thread metadata filters into SQL instead of post-filtering
+  in Python. ([#2865])
+- **runtime:** Index runs by `thread_id` to avoid O(n) scans in `RunManager`.
+  ([#3499])
+- **runtime:** Index messages in `MemoryRunEventStore` to avoid O(n) scans.
+  ([#3531])
+
+### Security
+
+- **upload:** Reject symlinked upload destinations. ([#2623])
+- **uploads:** Add Windows support for safe symlink-protected uploads.
+  ([#2794])
+- **mcp:** Mask sensitive values in MCP config API responses. ([#2667])
+- **mcp:** Harden the MCP config endpoint against malformed input. ([#3425])
+- **auth:** Reject cross-site auth POSTs. ([#2740])
+- **gateway:** Cap skill artifact preview decompression to prevent
+  zip-bomb-style abuse. ([#2963])
+
+### Fixed
+
+#### Runtime, gateway & persistence
+- **runtime:** Rollback restore checkpoint now supersedes newer checkpoints.
+  ([#2582])
+- **runtime:** Persist run message summaries. ([#2850])
+- **runtime:** Bound `write_file` execution-failure observations to keep
+  failure traces from blowing out the context. ([#3133])
+- **runtime:** Protect the sync singleton's init and reset paths. ([#3413])
+- **runtime:** Avoid PostgreSQL aggregate `FOR UPDATE` on run events.
+  ([#2962])
+- **runs:** Restore historical runs from persistent store after a gateway
+  restart. ([#2989])
+- **gateway:** Return ISO 8601 timestamps from threads endpoints. ([#2599])
+- **gateway:** Make cancel idempotent for already-interrupted runs. ([#3058])
+- **gateway:** Split `stream_existing_run` into per-method routes for unique
+  OpenAPI `operationId`s. ([#3228])
+- **events:** Serialize structured DB event content. ([#2762])
+- **persistence:** Emit timezone-aware timestamps from SQLite-backed stores.
+  ([#3130])
+- **persistence:** Reuse token usage model grouping expression. ([#2910])
+- **runs:** Ignore stale run reconnect conflicts. ([#3284])
+- **nginx:** Defer CORS to the gateway allowlist instead of double-applying it.
+  ([#2861])
+
+#### Agents, subagents & middleware
+- **subagents:** Make subagent timeout terminal state atomic. ([#2583])
+- **subagents:** Use model override for tools and middleware. ([#2641])
+- **subagents:** Consolidate `system_prompt` and skills into a single
+  `SystemMessage`. ([#2701])
+- **subagent:** Isolate subagents from the parent run's checkpointer.
+  ([#3559])
+- **agents:** Make `update_agent` honor `runtime.context` `user_id` like
+  `setup_agent` does. ([#2867])
+- **agents:** Resolve duplicate `todos` channel type conflict in
+  `TodoMiddleware`. ([#3200])
+- **agents:** Offload blocking filesystem IO in the custom-agent router off
+  the event loop. ([#3457])
+- **agents:** Keep new agent bootstrap in user scope. ([#2784])
+- **loop-detection:** Keep tool-call pairing on warn injection. ([#2725])
+- **middleware:** Sync raw tool-call metadata. ([#2757])
+- **middleware:** Handle invalid tool calls in dangling pairing middleware.
+  ([#2891])
+- **middleware:** Prevent todo completion reminder IM-message leak. ([#2907])
+- **middleware:** Normalize tool result adjacency before model calls.
+  ([#2939])
+
+#### Memory & tracing
+- **memory:** Replace short-lived `asyncio.run()` with a persistent event
+  loop. ([#2627])
+- **memory:** Isolate queued memory updates by agent. ([#2941])
+- **memory:** Parse wrapped memory-update JSON responses. ([#3252])
+- **tracing:** Propagate `session_id` and `user_id` into Langfuse traces.
+  ([#2944])
+- **trace:** Decode unicode escape sequences in non-ASCII memory trace info.
+  ([#3104])
+
+#### Tools, sandbox & MCP
+- **mcp:** Fix env resolution in MCP config lists. ([#2556])
+- **models:** Record Codex token usage in `usage_metadata`. ([#2585])
+- **sandbox:** Supplement `list_running` in `RemoteSandboxBackend`. ([#2716])
+- **sandbox:** Disable MSYS path conversion for Git Bash on Windows.
+  ([#2766])
+- **sandbox:** Avoid blocking sandbox readiness polling. ([#2822])
+- **sandbox:** Uphold the `/mnt/user-data` contract at the `Sandbox` API
+  boundary. ([#2881])
+- **sandbox:** Scope provisioner PVC data by user. ([#2973])
+- **sandbox:** Merge idempotent sandbox state updates. ([#3518])
+- **tools:** Introduce `Runtime` type alias to eliminate Pydantic serialization
+  warnings. ([#2774])
+- **tools:** Preserve `tool_search` promotions across re-entrant
+  `get_available_tools`. ([#2885])
+- **harness:** Wrap async-only config tools for sync client execution.
+  ([#2878])
+- **harness:** Wrap all async-only tools for sync clients. ([#2935])
+
+#### Skills & channels
+- **skills:** Enforce `allowed-tools` metadata. ([#2626])
+- **skills:** Harden slash skill activation across chat channels. ([#3466])
+- **skills:** Fix custom skill install permissions. ([#3241])
+- **channels:** Authenticate gateway command requests. ([#2742])
+
+#### Auth
+- **auth:** Replace setup-status 429 rate limit with a cached response.
+  ([#2915])
+- **auth:** Persist auto-generated JWT secret so it survives restarts.
+  ([#2933])
+
+#### Frontend
+- **frontend:** Restore `localhost` fallback for `getGatewayConfig` in prod
+  mode. ([#2718])
+- **chat:** Prevent the first user message from being swallowed in new
+  conversations. ([#2731])
+- **frontend:** Use backend thread token usage for the header total. ([#2800])
+- **frontend:** Wait for async chat submit before clearing the input.
+  ([#2940])
+- **frontend:** Resolve login page flickering and the resize-observer loop.
+  ([#2954])
+- **frontend:** Deduplicate restored thread messages. ([#2958])
+- **frontend:** Avoid duplicate optimistic user message. ([#3002])
+- **frontend:** Hide the copy button for streaming assistant messages.
+  ([#3176])
+- **frontend:** Show a new thread in the sidebar immediately on creation.
+  ([#3283])
+- **frontend:** Isolate new chat thread messages. ([#3508])
+- **frontend:** Cap deeply nested list indentation to prevent render crashes.
+  ([#3393], [#3570])
+- **token-usage:** Dedupe token usage aggregation by message id. ([#2770])
+
+#### Build, deploy, scripts & config
+- **packaging:** Add `postgres` extra for store/checkpointer support; clarify
+  install guidance. ([#2584])
+- **harness:** Resolve runtime paths from the project root. ([#2642])
+- **docker:** Force nginx to resolve upstream names at request time.
+  ([#2717])
+- **docker:** Default Gateway to a single worker to prevent multi-worker
+  breakage. ([#3475])
+- **scripts:** Preserve `uv` extras across `make dev` restarts. ([#2767],
+  [#2754])
+- **scripts:** Clean up local nginx on stop. ([#3005])
+- **deploy:** Fall back to `python` / `openssl` when `python3` is absent for
+  secret generation. ([#3074])
+- **config:** Make the reload boundary discoverable from code. ([#3144],
+  [#3153])
+- **replay-e2e:** Key replay fixtures by caller and conversation. ([#3453])
+
+### Changed
+
+- **provider (refactor):** Share assistant payload replay matching across
+  providers. ([#3307])
+
+### Documentation
+
+- Document blocking-IO detection usage and maintenance. ([#3233])
+- Clean standalone LangGraph server remnants from docs. ([#3301])
+
+### Internal
+
+- **dev:** Add async/thread boundary detector. ([#2936])
+- **runtime:** Add lifecycle end-to-end coverage. ([#2946])
+- **windows:** Add `PYTHONIOENCODING` and `PYTHONUTF8` to backend Makefile
+  targets. ([#3069])
+- **blocking-io:** Fail-loud repo-root resolution and shared detector CLI
+  shim. ([#3512])
+
+[2.0.0]: https://github.com/bytedance/deer-flow/releases/tag/v2.0.0
+[#2329]: https://github.com/bytedance/deer-flow/pull/2329
+[#2556]: https://github.com/bytedance/deer-flow/pull/2556
+[#2582]: https://github.com/bytedance/deer-flow/pull/2582
+[#2583]: https://github.com/bytedance/deer-flow/pull/2583
+[#2584]: https://github.com/bytedance/deer-flow/pull/2584
+[#2585]: https://github.com/bytedance/deer-flow/pull/2585
+[#2586]: https://github.com/bytedance/deer-flow/pull/2586
+[#2599]: https://github.com/bytedance/deer-flow/pull/2599
+[#2623]: https://github.com/bytedance/deer-flow/pull/2623
+[#2626]: https://github.com/bytedance/deer-flow/pull/2626
+[#2627]: https://github.com/bytedance/deer-flow/pull/2627
+[#2641]: https://github.com/bytedance/deer-flow/pull/2641
+[#2642]: https://github.com/bytedance/deer-flow/pull/2642
+[#2667]: https://github.com/bytedance/deer-flow/pull/2667
+[#2701]: https://github.com/bytedance/deer-flow/pull/2701
+[#2711]: https://github.com/bytedance/deer-flow/pull/2711
+[#2713]: https://github.com/bytedance/deer-flow/pull/2713
+[#2716]: https://github.com/bytedance/deer-flow/pull/2716
+[#2717]: https://github.com/bytedance/deer-flow/pull/2717
+[#2718]: https://github.com/bytedance/deer-flow/pull/2718
+[#2725]: https://github.com/bytedance/deer-flow/pull/2725
+[#2731]: https://github.com/bytedance/deer-flow/pull/2731
+[#2740]: https://github.com/bytedance/deer-flow/pull/2740
+[#2742]: https://github.com/bytedance/deer-flow/pull/2742
+[#2752]: https://github.com/bytedance/deer-flow/pull/2752
+[#2754]: https://github.com/bytedance/deer-flow/pull/2754
+[#2757]: https://github.com/bytedance/deer-flow/pull/2757
+[#2762]: https://github.com/bytedance/deer-flow/pull/2762
+[#2766]: https://github.com/bytedance/deer-flow/pull/2766
+[#2767]: https://github.com/bytedance/deer-flow/pull/2767
+[#2770]: https://github.com/bytedance/deer-flow/pull/2770
+[#2774]: https://github.com/bytedance/deer-flow/pull/2774
+[#2775]: https://github.com/bytedance/deer-flow/pull/2775
+[#2784]: https://github.com/bytedance/deer-flow/pull/2784
+[#2794]: https://github.com/bytedance/deer-flow/pull/2794
+[#2800]: https://github.com/bytedance/deer-flow/pull/2800
+[#2822]: https://github.com/bytedance/deer-flow/pull/2822
+[#2841]: https://github.com/bytedance/deer-flow/pull/2841
+[#2842]: https://github.com/bytedance/deer-flow/pull/2842
+[#2850]: https://github.com/bytedance/deer-flow/pull/2850
+[#2861]: https://github.com/bytedance/deer-flow/pull/2861
+[#2865]: https://github.com/bytedance/deer-flow/pull/2865
+[#2867]: https://github.com/bytedance/deer-flow/pull/2867
+[#2878]: https://github.com/bytedance/deer-flow/pull/2878
+[#2881]: https://github.com/bytedance/deer-flow/pull/2881
+[#2882]: https://github.com/bytedance/deer-flow/pull/2882
+[#2885]: https://github.com/bytedance/deer-flow/pull/2885
+[#2891]: https://github.com/bytedance/deer-flow/pull/2891
+[#2907]: https://github.com/bytedance/deer-flow/pull/2907
+[#2910]: https://github.com/bytedance/deer-flow/pull/2910
+[#2915]: https://github.com/bytedance/deer-flow/pull/2915
+[#2932]: https://github.com/bytedance/deer-flow/pull/2932
+[#2933]: https://github.com/bytedance/deer-flow/pull/2933
+[#2935]: https://github.com/bytedance/deer-flow/pull/2935
+[#2936]: https://github.com/bytedance/deer-flow/pull/2936
+[#2939]: https://github.com/bytedance/deer-flow/pull/2939
+[#2940]: https://github.com/bytedance/deer-flow/pull/2940
+[#2941]: https://github.com/bytedance/deer-flow/pull/2941
+[#2944]: https://github.com/bytedance/deer-flow/pull/2944
+[#2946]: https://github.com/bytedance/deer-flow/pull/2946
+[#2954]: https://github.com/bytedance/deer-flow/pull/2954
+[#2958]: https://github.com/bytedance/deer-flow/pull/2958
+[#2962]: https://github.com/bytedance/deer-flow/pull/2962
+[#2963]: https://github.com/bytedance/deer-flow/pull/2963
+[#2973]: https://github.com/bytedance/deer-flow/pull/2973
+[#2989]: https://github.com/bytedance/deer-flow/pull/2989
+[#3002]: https://github.com/bytedance/deer-flow/pull/3002
+[#3005]: https://github.com/bytedance/deer-flow/pull/3005
+[#3058]: https://github.com/bytedance/deer-flow/pull/3058
+[#3069]: https://github.com/bytedance/deer-flow/pull/3069
+[#3074]: https://github.com/bytedance/deer-flow/pull/3074
+[#3101]: https://github.com/bytedance/deer-flow/pull/3101
+[#3104]: https://github.com/bytedance/deer-flow/pull/3104
+[#3130]: https://github.com/bytedance/deer-flow/pull/3130
+[#3133]: https://github.com/bytedance/deer-flow/pull/3133
+[#3144]: https://github.com/bytedance/deer-flow/pull/3144
+[#3153]: https://github.com/bytedance/deer-flow/pull/3153
+[#3174]: https://github.com/bytedance/deer-flow/pull/3174
+[#3176]: https://github.com/bytedance/deer-flow/pull/3176
+[#3200]: https://github.com/bytedance/deer-flow/pull/3200
+[#3228]: https://github.com/bytedance/deer-flow/pull/3228
+[#3233]: https://github.com/bytedance/deer-flow/pull/3233
+[#3241]: https://github.com/bytedance/deer-flow/pull/3241
+[#3252]: https://github.com/bytedance/deer-flow/pull/3252
+[#3283]: https://github.com/bytedance/deer-flow/pull/3283
+[#3284]: https://github.com/bytedance/deer-flow/pull/3284
+[#3301]: https://github.com/bytedance/deer-flow/pull/3301
+[#3307]: https://github.com/bytedance/deer-flow/pull/3307
+[#3393]: https://github.com/bytedance/deer-flow/pull/3393
+[#3413]: https://github.com/bytedance/deer-flow/pull/3413
+[#3425]: https://github.com/bytedance/deer-flow/pull/3425
+[#3453]: https://github.com/bytedance/deer-flow/pull/3453
+[#3457]: https://github.com/bytedance/deer-flow/pull/3457
+[#3461]: https://github.com/bytedance/deer-flow/pull/3461
+[#3466]: https://github.com/bytedance/deer-flow/pull/3466
+[#3475]: https://github.com/bytedance/deer-flow/pull/3475
+[#3487]: https://github.com/bytedance/deer-flow/pull/3487
+[#3499]: https://github.com/bytedance/deer-flow/pull/3499
+[#3508]: https://github.com/bytedance/deer-flow/pull/3508
+[#3512]: https://github.com/bytedance/deer-flow/pull/3512
+[#3518]: https://github.com/bytedance/deer-flow/pull/3518
+[#3528]: https://github.com/bytedance/deer-flow/pull/3528
+[#3531]: https://github.com/bytedance/deer-flow/pull/3531
+[#3559]: https://github.com/bytedance/deer-flow/pull/3559
+[#3570]: https://github.com/bytedance/deer-flow/pull/3570