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doc(changelog): updated the changelog with latest changes (#4270)

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@ -7,6 +7,146 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
## [Unreleased] ## [Unreleased]
This section accumulates work toward the **2.1.0** milestone
([milestone 2](https://github.com/bytedance/deer-flow/milestone/2)).
### ⚠ Breaking changes
- **skills:** A directory containing `SKILL.md` is now a runtime package
boundary. Nested `SKILL.md` files inside that package are supporting data and
are no longer registered as independent skills; unusual custom layouts must
move independently loadable skills under a namespace directory without its
own `SKILL.md`. ([#4098])
- **memory:** The memory system is now pluggable (`memory.manager_class` selects
a backend; default `deermem` is self-contained). DeerMem-private settings moved
from the top level of `memory:` into `memory.backend_config`, and the
`/memory/config` response (and `client.get_memory_config()`) changed shape.
([#4122])
- **memory:** `/memory/config` and `client.get_memory_config()` no longer return
flat DeerMem fields (`storage_path`, `max_facts`, `debounce_seconds`,
`token_counting`, `guaranteed_*`, `staleness_*`, ...). They return
`{enabled, mode, injection_enabled, manager_class, backend_config}` where
`backend_config` is an opaque dict the active backend self-interprets. Memory
*data* responses (`/memory`, `/memory/status` data) are unchanged. External
API/SDK clients reading the old flat fields must read `backend_config` instead.
([#4122])
- **memory:** Custom `memory.storage_class` moved: the old default path
`deerflow.agents.memory.storage.FileMemoryStorage` no longer exists (now
`deerflow.agents.memory.backends.deermem.deermem.core.storage.FileMemoryStorage`).
Custom `MemoryStorage` subclasses must accept `config` in `__init__` (was
no-arg). A broken/old `storage_class` logs an error and falls back to
`FileMemoryStorage` (won't crash) -- update the path + signature to restore it.
([#4122])
- **memory:** `storage_path` semantics changed from a FILE path to a root
DIRECTORY. Pre-abstraction, an absolute `storage_path` was the shared memory
file (opting out of per-user isolation) and a relative value was the global
file under the data base_dir. Now `storage_path` (absolute or relative) is the
root directory; per-user memory lives at `{storage_path}/users/{uid}/memory.json`.
An upgrade keeping the old default `storage_path: memory.json` (a relative file
name) would orphan per-user memory or hit `NotADirectoryError` on save, so the
legacy migration **drops file-style `storage_path` values (ending in `.json`)
with a warning** and the factory **raises** if `storage_path` resolves to an
existing file. Set `memory.backend_config.storage_path` to a directory for a
custom root. ([#4122])
### Added
#### Agents & runtime
- **middleware:** New `TokenBudgetMiddleware` enforces a per-run token budget,
shared additively across the lead agent and subagents. ([#3412])
- **middleware:** Structured tool-result metadata and a tool-progress state
machine give the runtime first-class visibility into multi-step tool flows.
([#3601])
- **context:** Record the effective memory identity per run and persist durable
context (system messages, memory, and tool state) across summarization,
emitting it as structured runtime metadata so compaction no longer drops it.
([#3556], [#3887], [#3906])
- **runtime:** Goal continuations let a run resume toward a goal across multiple
agent turns, with `continuation_count` tracked and capped. ([#3858])
- **subagents:** A system-maintained delegation ledger prevents redundant
re-delegation of an in-flight task, and a total delegation cap bounds fan-out
per run. ([#3877], [#4115])
- **subagents:** Persist and display subagent step history in the thread.
([#3845])
- **tools:** Structured synopses replace raw oversized tool output in previews.
([#3377])
- **files:** Deterministic read-before-write version gate for file tools
prevents clobbering concurrent edits. ([#3912])
- **gateway:** Cache-aware cost accounting attributes token costs to cached vs.
uncached paths; a Redis stream bridge enables distributed event streaming; and
manual context compaction is exposed to the user. ([#3920], [#3191], [#3969])
#### Memory
- **memory:** Memory consolidation synthesizes fragmented facts, and a staleness
review prunes silently-outdated facts using LLM-assigned per-fact
`expected_valid_days` / `staleFactsToExtend`. ([#3996], [#3860], [#4143])
- **memory:** Guaranteed injection of correction facts (with graceful fallback)
so user corrections always reach the model. ([#3592])
#### Skills
- **skills:** Native SkillScan (phase 1) statically analyzes skill packages at
load, and `describe_skill` enables deferred discovery so the model fetches a
skill's schema on demand instead of loading all skills up front. ([#3033],
[#3775])
- **skills:** Per-user custom skill isolation with sandbox mounting. ([#3889])
#### Models & integrations
- **community:** New web search/fetch engines - GroundRoute, Crawl4AI
(`web_fetch`), and a fastCRW provider - plus a Browserless `web_capture`
screenshot tool and Brave `image_search`. ([#3675], [#3821], [#3585], [#3881],
[#3866])
- **mcp:** Per-server `tool_call_timeout` for MCP tool calls, and routing hints
that guide the model to the right server. ([#3843], [#4004])
#### Channels
- **channels:** Expose the IM `channel_user_id` to sandbox commands as
`DEERFLOW_CHANNEL_USER_ID`. ([#3926])
- **channels:** Queue rapid same-thread messages and preserve topic-card
previews across batches. ([#3988])
#### Auth & guardrails
- **auth:** Generic OIDC/SSO authentication with Keycloak support. ([#3506])
- **guardrails:** Authenticated runtime context is exposed in `GuardrailRequest`,
and security interventions are persisted as run events. ([#3665], [#3837])
#### Sandbox & provisioner
- **sandbox:** New E2B and BoxLite (micro-VM) sandbox providers; BoxLite ships
with a warm pool. ([#3883], [#3940], [#3951])
- **provisioner:** ClusterIP Services and scoped per-skill PVC mounts, plus a
configurable sandbox container port. ([#4016], [#3928])
#### Frontend
- **frontend:** Branching support for assistant turns and side conversations for
quoted follow-ups. ([#3950], [#3934])
- **frontend:** Regenerate the latest answer. ([#3637])
- **frontend:** Citation-sources evidence panel, workspace change review for
agent runs, and a visualized `ask_clarification` card. ([#3907], [#3945],
[#3956])
- **frontend:** Voice dictation, prompt-history recall with arrow keys, composer
input polishing, and a "(thought for N seconds)" thinking-duration chip.
([#4036], [#3718], [#3986], [#3627])
- **frontend:** Feature-gate the agents UI behind the `agents_api` flag, and
persist AI turn duration in backend and UI. ([#3769], [#3663])
#### Observability & tooling
- **observability:** Trace-id correlation with enhanced logging and agent
observability via Monocle. ([#3902], [#4024])
- **tooling:** A Hermes-like terminal workbench (`deerflow` CLI) backed by
`DeerFlowClient`, plus a redacted community support-bundle generator. ([#3760],
[#3886])
- **setup:** The setup wizard now asks whether OpenAI-compatible gateway models
support thinking, and a Volcengine Coding Plan quick-setup path was added.
([#3428], [#4141])
### Changed ### Changed
- **sandbox:** The Helm chart now defaults per-sandbox Services to `ClusterIP` - **sandbox:** The Helm chart now defaults per-sandbox Services to `ClusterIP`
@ -19,45 +159,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
where the gateway is not in K8s), set `provisioner.sandboxServiceType: NodePort` where the gateway is not in K8s), set `provisioner.sandboxServiceType: NodePort`
(with `provisioner.nodeHost` if needed). The provisioner itself is unchanged (with `provisioner.nodeHost` if needed). The provisioner itself is unchanged
(mode-aware since #4016). ([#4190]) (mode-aware since #4016). ([#4190])
### ⚠ Breaking changes
- **skills:** A directory containing `SKILL.md` is now a runtime package
boundary. Nested `SKILL.md` files inside that package are supporting data and
are no longer registered as independent skills; unusual custom layouts must
move independently loadable skills under a namespace directory without its
own `SKILL.md`. ([#4098])
- **memory:** The memory system is now pluggable (`memory.manager_class` selects
a backend; default `deermem` is self-contained). DeerMem-private settings moved
from the top level of `memory:` into `memory.backend_config`, and the
`/memory/config` response (and `client.get_memory_config()`) changed shape.
- **memory:** `/memory/config` and `client.get_memory_config()` no longer return
flat DeerMem fields (`storage_path`, `max_facts`, `debounce_seconds`,
`token_counting`, `guaranteed_*`, `staleness_*`, ...). They return
`{enabled, mode, injection_enabled, manager_class, backend_config}` where
`backend_config` is an opaque dict the active backend self-interprets. Memory
*data* responses (`/memory`, `/memory/status` data) are unchanged. External
API/SDK clients reading the old flat fields must read `backend_config` instead.
- **memory:** Custom `memory.storage_class` moved: the old default path
`deerflow.agents.memory.storage.FileMemoryStorage` no longer exists (now
`deerflow.agents.memory.backends.deermem.deermem.core.storage.FileMemoryStorage`).
Custom `MemoryStorage` subclasses must accept `config` in `__init__` (was
no-arg). A broken/old `storage_class` logs an error and falls back to
`FileMemoryStorage` (won't crash) -- update the path + signature to restore it.
- **memory:** `storage_path` semantics changed from a FILE path to a root
DIRECTORY. Pre-abstraction, an absolute `storage_path` was the shared memory
file (opting out of per-user isolation) and a relative value was the global
file under the data base_dir. Now `storage_path` (absolute or relative) is the
root directory; per-user memory lives at `{storage_path}/users/{uid}/memory.json`.
An upgrade keeping the old default `storage_path: memory.json` (a relative file
name) would orphan per-user memory or hit `NotADirectoryError` on save, so the
legacy migration **drops file-style `storage_path` values (ending in `.json`)
with a warning** and the factory **raises** if `storage_path` resolves to an
existing file. Set `memory.backend_config.storage_path` to a directory for a
custom root.
### Changed
- **skills:** An active restrictive skill must explicitly list `task` in - **skills:** An active restrictive skill must explicitly list `task` in
`allowed-tools` to delegate to a subagent. Read-only discovery infrastructure `allowed-tools` to delegate to a subagent. Read-only discovery infrastructure
(`tool_search` and `describe_skill`) remains available, but cannot grant schema (`tool_search` and `describe_skill`) remains available, but cannot grant schema
@ -68,12 +169,18 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
into `backend_config`** on load with a warning, so an upgrade does NOT silently into `backend_config`** on load with a warning, so an upgrade does NOT silently
revert customized settings to defaults (`model_name` -> revert customized settings to defaults (`model_name` ->
`backend_config.model.model`). Move them under `memory.backend_config` in `backend_config.model.model`). Move them under `memory.backend_config` in
`config.yaml` to silence the warning. `config.yaml` to silence the warning. ([#4122])
- **memory:** Added `memory.mode` (`middleware` | `tool`); `tool` mode registers - **memory:** Added `memory.mode` (`middleware` | `tool`); `tool` mode registers
memory tools (`memory_search`/`add`/`update`/`delete`) the model calls directly memory tools (`memory_search`/`add`/`update`/`delete`) the model calls directly
instead of passive per-turn summarization. `manager_class` resolution is now instead of passive per-turn summarization. `manager_class` resolution is now
fail-fast (raises `ValueError` on an unknown backend instead of silently fail-fast (raises `ValueError` on an unknown backend instead of silently
falling back). falling back). ([#4023])
- **middleware:** Declarative layered middleware builder; `ThreadData` now runs
before `Uploads`. ([#3809])
- **sandbox:** The host->virtual output-masking regex now has a single owner,
eliminating duplicated pattern compilation. ([#4108])
- **docs:** `AGENTS.md` is now the source of truth for agent guidance, imported
by `CLAUDE.md` via `@AGENTS.md`; module guides refreshed. ([#3770])
### Fixed ### Fixed
@ -86,7 +193,162 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
not just `ChatOpenAI` / `PatchedChatOpenAI`. Those five previously dropped the not just `ChatOpenAI` / `PatchedChatOpenAI`. Those five previously dropped the
configured endpoint silently and then failed every request with an opaque configured endpoint silently and then failed every request with an opaque
`unexpected keyword argument 'api_base'`; the unknown-config-key warning was `unexpected keyword argument 'api_base'`; the unknown-config-key warning was
disabled for them as well. Both now gate on `issubclass(BaseChatOpenAI)`. ([#4146]) disabled for them as well. Both now gate on `issubclass(BaseChatOpenAI)`.
([#4146])
- **agents:** Coalesce `SystemMessage`s before the LLM request; ensure a visible
response after tool runs; avoid a default LLM title call before stream end;
reserve ellipsis room so the local title respects `max_chars`; and snap the
tool-output tail forward so fallback truncation respects `max_chars`. ([#3711],
[#4033], [#3885], [#4052], [#4017])
- **agents:** Skip dateless reminders in the dynamic-context date scan; load
`SOUL.md` from agent dirs without `config.yaml`; require `config.yaml` in
`update_agent`'s legacy-agent guard; and refuse empty `SOUL.md` updates.
([#3685], [#4136], [#4166], [#4219])
- **middleware:** Window the loop-detection tool-frequency counter so long runs
no longer false-trip; prevent the title middleware from streaming tokens;
fix positional fallback consuming an unrelated todo when the same-content list
is exhausted; acquire the token-budget lock across `_apply`, `before_agent`,
`_clear_run_state`, and `_drain_pending_warnings`; drop orphan `ToolMessage`s
so strict providers don't 400; sanitize invalid tool-call arguments; and
recover from empty tool-call names and malformed tool-call ids in dangling
repair. ([#4072], [#3566], [#3709], [#3714], [#4080], [#4193], [#4008],
[#4246])
- **subagents:** Inherit `LoopDetectionMiddleware` and summarization middleware
so tool loops break and steps are captured; surface the turn-budget cap as
`MAX_TURNS_REACHED` with a partial result; unify guardrail caps on the additive
`stop_reason` + `token_budget`; inject durable context before compaction;
preserve the parent checkpoint namespace; prohibit the `task` tool in the
general-purpose system prompt; re-buffer subagent events on flush failure to
avoid losing steps; and fix the lost `loop_capped` stop reason when a
subagent's `run_id` is `None`. ([#3931], [#4009], [#3949], [#3980], [#4040],
[#4215], [#4161], [#4082], [#4059])
- **memory:** Harden against null/empty edge cases - skip whitespace-only facts;
coerce null `confidence` / `source.confidence` in updates, searches, and the
three remaining raw reads; treat explicit `null` `backend_config` values as
omitted; fix `KeyError` / `UnboundLocalError` when a fact has no id or the
facts list is empty; stop the busy-spin in the debounced update queue; and
flush the memory queue on graceful shutdown to prevent loss. ([#3719], [#4074],
[#4076], [#4034], [#4217], [#3993], [#3992], [#4073], [#4181])
- **runs:** Close multi-worker ownership gaps in run atomicity; degrade cancel
to lease takeover for multi-worker; keep `create_thread` idempotent when the
insert loses a race; read `stop_reason` from runtime context; and persist run
duration in checkpoints for history reads. ([#4003], [#4064], [#3800], [#4188],
[#4118])
- **runtime:** Serialize SQLite event-store writes to prevent per-thread
sequence collisions; skip hidden human messages in the journal; and drop the
silent delta-discard in `_merge_stream_text`. ([#4077], [#3698], [#4085])
- **gateway:** Attach thread-message feedback by real `event_type`; offload
blocking filesystem IO in artifact serving, gateway uploads, and the Discord
channel; limit the uploaded-file context manifest; and live-tail malformed
Redis reconnect ids. ([#3651], [#3551], [#3935], [#3927], [#3917], [#4012])
- **config:** Coerce null object config sections to their defaults; honor the
unified database configuration in the store and sync checkpointer; and have
legacy DB backfill create missing `Index` objects on existing tables. ([#3573],
[#3904], [#3994], [#4090])
- **models:** Apply the `stream_chunk_timeout` default to all `BaseChatOpenAI`
subclasses; and normalize `api_base` -> `base_url` for `ChatOpenAI` with a
warning on unknown config keys. ([#4102], [#3790])
- **mcp:** Isolate tool-discovery failures per server; synchronize the
session-pool singleton lifecycle; invalidate the tools cache on config content
+ path (not just newer mtime); validate MCP tool names at load so deferred
prompts stay inert; and route tools by source server, not name prefix. ([#3772],
[#3797], [#4124], [#4154], [#3812])
- **skills:** Activate a slash skill once per run, not per model call; close the
skill-install security-scan coverage gap; recognize fully deleted skill
packages in review CI and remaining `requests` / `httpx` methods as network
sinks in SkillScan; reuse the resolved app config in the no-arg skills prompt
section; and reload mounted skills without restarting the Gateway. ([#4103],
[#3924], [#4169], [#4130], [#4160], [#4264])
- **sandbox:** Guard the reverse path-translation and output-masking regexes
with segment boundaries; handle one-sided line ranges and empty files in
`read_file` / `str_replace`; align the AIO bash working directory; use
`os.sep` in the reverse-resolve containment check on Windows; normalize
Windows backslash paths in bash commands; stop `glob` / `grep` / `ls` from
surfacing disabled skills' files; and allow valid heredoc commands in the
sandbox audit. ([#4035], [#4053], [#4078], [#4079], [#4051], [#4058], [#3869],
[#4096], [#3786])
- **sandbox:** Synchronize the sandbox provider singleton lifecycle (with
concurrency regression tests) and keep k8s calls off the event loop in the
provisioner. ([#3730], [#3941])
- **sandbox:** Align sandbox artifact mounts with the channel user; fix
local-dev (`make dev`) on non-root / NFS hosts; reap macOS nginx processes on
stop; and fix production Postgres UV-extras detection in Docker. ([#3729],
[#3590], [#3828], [#3897])
- **channels:** Validate the channel provider before resolving its config;
dedupe GitHub webhook redeliveries and drop redundant GitHub review-comment
webhook fan-out; scope the slash-skill whitelist check to the run's owner;
batch Feishu file messages into one thread and dispatch Feishu group commands
prefixed with a bot @mention; accept leading @mentions before `/connect` bind
codes and don't treat a bare "connect" as a bind command; stop Feishu from
creating thread topics and throttle card updates; let the UI runtime channel
config win over `config.yaml`; fix `require_mention` gating on
whitespace-only `bot_login` / `mention_login`; and guard null quote fields in
WeCom. ([#4100], [#4104], [#4131], [#4129], [#3753], [#4229], [#4222], [#4251],
[#3810], [#3674], [#4055], [#4069])
- **frontend:** Preserve messages and durable context across summarization;
preserve artifacts and stabilize artifact paths during streaming; resolve
relative artifact image paths; retain presented artifacts in the header
dropdown; keep orphan tool messages visible; show assistant text during tool
steps; reset new chat on client-side navigation; prevent stream cancellation
on concurrent submit; fix stale-run reconnect and cancel handling; fix chat
math rendering, single-tilde markdown, double reasoning rendering, UTF-16
markdown binary classification, and `<memory>` tags in Streamdown; make
recent-chat rows fully clickable; validate attachment limits before upload and
fix uploaded-file metadata in message copy; fix mobile workspace and
accessibility blockers, the card tool-message bug, and side-chat toolbar /
panel-button behavior; block unresolved suggestion-template placeholders;
refresh notification permissions; show the branch action only for completed
turns; enable regenerate in custom agent chats; and generate a fallback title
for interrupted first-turn runs. ([#3826], [#3791], [#4094], [#4038], [#3854],
[#3880], [#4114], [#3673], [#3878], [#3908], [#3557], [#4245], [#3870], [#3966],
[#4209], [#3733], [#3900], [#3944], [#3740], [#3976], [#3959], [#3961], [#3764],
[#3768], [#4147], [#3967], [#3874], [#3644])
- **tui:** Interrupt an active run before `/quit` exits. ([#4235])
- **harness:** Don't flag the outline as truncated at exactly `MAX_OUTLINE_ENTRIES`
headings. ([#3856])
- **tracing:** Attach Langfuse trace metadata to the goal evaluator. ([#4202])
- **context:** Resolve the context-compress bug. ([#4065])
- **threaddata:** Fix `AttributeError` when `runtime.context` is `None`. ([#3989])
- **goal:** Stop `continuation_count` double-bump during stand-down. ([#4199])
- **circuit-breaker:** Stop wedging after a non-retriable half-open probe. ([#3991])
- **github:** Match `allow_authors` logins case-insensitively. ([#4218])
- **community:** `image_search` now returns the full-resolution image URL. ([#3990])
### Performance
- **runtime:** Index `MemoryRunStore` by `thread_id` and `MemoryRunEventStore`
events by `run_id` to avoid O(n) scans. ([#3562], [#3686])
- **subagents:** Deduplicate streamed AI messages via a seen-id set (O(n²) ->
O(n)). ([#3687])
- **sandbox:** Cache `LocalSandbox` path-rewrite regexes and local-path masking
patterns per instance instead of recompiling per search match. ([#3648],
[#3713])
### Security
- **prompt-injection:** New input-sanitization middleware defends against
prompt-injection, forged framework tags in the input guardrail are blocked,
and system context is injected as a `SystemMessage` for role isolation. ([#3662],
[#4155], [#3661])
- **prompt-injection:** HTML-escape untrusted content rendered into model prompts
- memory facts and summaries, `SOUL.md`, subagent descriptions, and the
conversation block in the memory-update prompt - and neutralize
prompt-injection tags in `web_capture` tool results. ([#4028], [#4119], [#4137],
[#4157], [#4162], [#4099], [#4060])
- **secrets:** Scrub inherited secret environment variables (`MYSQL_PWD`,
`REDISCLI_AUTH`, abbreviated `*_PASS`, and Postgres `PGPASSFILE`) from the
skill environment; request-scoped secrets are bound for both slash-activated
and autonomously-invoked skills. ([#4018], [#4026], [#3871], [#3938])
- **web_fetch:** SSRF guard for self-hosted providers. ([#3942])
- **guardrails:** An empty allowlist now denies all tools instead of failing
open. ([#4067])
- **authz:** Global skills-management endpoints now require admin; the legacy
skills mount is gated by user visibility; artifacts honor a trusted
`owner-user-id` header; and the trusted authorization principal is propagated
through the runtime. ([#3855], [#3985], [#3982], [#4203])
- **auth:** Persist the `csrf_token` cookie for the access-token lifetime.
([#3872])
- **storage:** Stop persisting base64 image data in checkpoint state. ([#4140])
## [2.0.0] — 2026-06-15 ## [2.0.0] — 2026-06-15
@ -416,6 +678,7 @@ with **180 merged pull requests** since the first 2.0 milestone tag.
label thrash. ([#3455]) label thrash. ([#3455])
[2.0.0]: https://github.com/bytedance/deer-flow/releases/tag/v2.0.0 [2.0.0]: https://github.com/bytedance/deer-flow/releases/tag/v2.0.0
[#2329]: https://github.com/bytedance/deer-flow/pull/2329 [#2329]: https://github.com/bytedance/deer-flow/pull/2329
[#2556]: https://github.com/bytedance/deer-flow/pull/2556 [#2556]: https://github.com/bytedance/deer-flow/pull/2556
[#2582]: https://github.com/bytedance/deer-flow/pull/2582 [#2582]: https://github.com/bytedance/deer-flow/pull/2582
@ -484,6 +747,7 @@ with **180 merged pull requests** since the first 2.0 milestone tag.
[#2989]: https://github.com/bytedance/deer-flow/pull/2989 [#2989]: https://github.com/bytedance/deer-flow/pull/2989
[#3002]: https://github.com/bytedance/deer-flow/pull/3002 [#3002]: https://github.com/bytedance/deer-flow/pull/3002
[#3005]: https://github.com/bytedance/deer-flow/pull/3005 [#3005]: https://github.com/bytedance/deer-flow/pull/3005
[#3033]: https://github.com/bytedance/deer-flow/pull/3033
[#3058]: https://github.com/bytedance/deer-flow/pull/3058 [#3058]: https://github.com/bytedance/deer-flow/pull/3058
[#3069]: https://github.com/bytedance/deer-flow/pull/3069 [#3069]: https://github.com/bytedance/deer-flow/pull/3069
[#3074]: https://github.com/bytedance/deer-flow/pull/3074 [#3074]: https://github.com/bytedance/deer-flow/pull/3074
@ -495,6 +759,7 @@ with **180 merged pull requests** since the first 2.0 milestone tag.
[#3153]: https://github.com/bytedance/deer-flow/pull/3153 [#3153]: https://github.com/bytedance/deer-flow/pull/3153
[#3174]: https://github.com/bytedance/deer-flow/pull/3174 [#3174]: https://github.com/bytedance/deer-flow/pull/3174
[#3176]: https://github.com/bytedance/deer-flow/pull/3176 [#3176]: https://github.com/bytedance/deer-flow/pull/3176
[#3191]: https://github.com/bytedance/deer-flow/pull/3191
[#3200]: https://github.com/bytedance/deer-flow/pull/3200 [#3200]: https://github.com/bytedance/deer-flow/pull/3200
[#3228]: https://github.com/bytedance/deer-flow/pull/3228 [#3228]: https://github.com/bytedance/deer-flow/pull/3228
[#3233]: https://github.com/bytedance/deer-flow/pull/3233 [#3233]: https://github.com/bytedance/deer-flow/pull/3233
@ -510,18 +775,21 @@ with **180 merged pull requests** since the first 2.0 milestone tag.
[#3313]: https://github.com/bytedance/deer-flow/pull/3313 [#3313]: https://github.com/bytedance/deer-flow/pull/3313
[#3335]: https://github.com/bytedance/deer-flow/pull/3335 [#3335]: https://github.com/bytedance/deer-flow/pull/3335
[#3342]: https://github.com/bytedance/deer-flow/pull/3342 [#3342]: https://github.com/bytedance/deer-flow/pull/3342
[#3377]: https://github.com/bytedance/deer-flow/pull/3377
[#3393]: https://github.com/bytedance/deer-flow/pull/3393 [#3393]: https://github.com/bytedance/deer-flow/pull/3393
[#3397]: https://github.com/bytedance/deer-flow/pull/3397 [#3397]: https://github.com/bytedance/deer-flow/pull/3397
[#3398]: https://github.com/bytedance/deer-flow/pull/3398 [#3398]: https://github.com/bytedance/deer-flow/pull/3398
[#3408]: https://github.com/bytedance/deer-flow/pull/3408 [#3408]: https://github.com/bytedance/deer-flow/pull/3408
[#3410]: https://github.com/bytedance/deer-flow/pull/3410 [#3410]: https://github.com/bytedance/deer-flow/pull/3410
[#3411]: https://github.com/bytedance/deer-flow/pull/3411 [#3411]: https://github.com/bytedance/deer-flow/pull/3411
[#3412]: https://github.com/bytedance/deer-flow/pull/3412
[#3413]: https://github.com/bytedance/deer-flow/pull/3413 [#3413]: https://github.com/bytedance/deer-flow/pull/3413
[#3417]: https://github.com/bytedance/deer-flow/pull/3417 [#3417]: https://github.com/bytedance/deer-flow/pull/3417
[#3421]: https://github.com/bytedance/deer-flow/pull/3421 [#3421]: https://github.com/bytedance/deer-flow/pull/3421
[#3423]: https://github.com/bytedance/deer-flow/pull/3423 [#3423]: https://github.com/bytedance/deer-flow/pull/3423
[#3425]: https://github.com/bytedance/deer-flow/pull/3425 [#3425]: https://github.com/bytedance/deer-flow/pull/3425
[#3426]: https://github.com/bytedance/deer-flow/pull/3426 [#3426]: https://github.com/bytedance/deer-flow/pull/3426
[#3428]: https://github.com/bytedance/deer-flow/pull/3428
[#3430]: https://github.com/bytedance/deer-flow/pull/3430 [#3430]: https://github.com/bytedance/deer-flow/pull/3430
[#3433]: https://github.com/bytedance/deer-flow/pull/3433 [#3433]: https://github.com/bytedance/deer-flow/pull/3433
[#3434]: https://github.com/bytedance/deer-flow/pull/3434 [#3434]: https://github.com/bytedance/deer-flow/pull/3434
@ -553,6 +821,7 @@ with **180 merged pull requests** since the first 2.0 milestone tag.
[#3502]: https://github.com/bytedance/deer-flow/pull/3502 [#3502]: https://github.com/bytedance/deer-flow/pull/3502
[#3503]: https://github.com/bytedance/deer-flow/pull/3503 [#3503]: https://github.com/bytedance/deer-flow/pull/3503
[#3505]: https://github.com/bytedance/deer-flow/pull/3505 [#3505]: https://github.com/bytedance/deer-flow/pull/3505
[#3506]: https://github.com/bytedance/deer-flow/pull/3506
[#3508]: https://github.com/bytedance/deer-flow/pull/3508 [#3508]: https://github.com/bytedance/deer-flow/pull/3508
[#3512]: https://github.com/bytedance/deer-flow/pull/3512 [#3512]: https://github.com/bytedance/deer-flow/pull/3512
[#3514]: https://github.com/bytedance/deer-flow/pull/3514 [#3514]: https://github.com/bytedance/deer-flow/pull/3514
@ -568,12 +837,18 @@ with **180 merged pull requests** since the first 2.0 milestone tag.
[#3534]: https://github.com/bytedance/deer-flow/pull/3534 [#3534]: https://github.com/bytedance/deer-flow/pull/3534
[#3535]: https://github.com/bytedance/deer-flow/pull/3535 [#3535]: https://github.com/bytedance/deer-flow/pull/3535
[#3548]: https://github.com/bytedance/deer-flow/pull/3548 [#3548]: https://github.com/bytedance/deer-flow/pull/3548
[#3551]: https://github.com/bytedance/deer-flow/pull/3551
[#3553]: https://github.com/bytedance/deer-flow/pull/3553 [#3553]: https://github.com/bytedance/deer-flow/pull/3553
[#3554]: https://github.com/bytedance/deer-flow/pull/3554 [#3554]: https://github.com/bytedance/deer-flow/pull/3554
[#3556]: https://github.com/bytedance/deer-flow/pull/3556
[#3557]: https://github.com/bytedance/deer-flow/pull/3557
[#3559]: https://github.com/bytedance/deer-flow/pull/3559 [#3559]: https://github.com/bytedance/deer-flow/pull/3559
[#3561]: https://github.com/bytedance/deer-flow/pull/3561 [#3561]: https://github.com/bytedance/deer-flow/pull/3561
[#3562]: https://github.com/bytedance/deer-flow/pull/3562
[#3566]: https://github.com/bytedance/deer-flow/pull/3566
[#3569]: https://github.com/bytedance/deer-flow/pull/3569 [#3569]: https://github.com/bytedance/deer-flow/pull/3569
[#3570]: https://github.com/bytedance/deer-flow/pull/3570 [#3570]: https://github.com/bytedance/deer-flow/pull/3570
[#3573]: https://github.com/bytedance/deer-flow/pull/3573
[#3575]: https://github.com/bytedance/deer-flow/pull/3575 [#3575]: https://github.com/bytedance/deer-flow/pull/3575
[#3577]: https://github.com/bytedance/deer-flow/pull/3577 [#3577]: https://github.com/bytedance/deer-flow/pull/3577
[#3578]: https://github.com/bytedance/deer-flow/pull/3578 [#3578]: https://github.com/bytedance/deer-flow/pull/3578
@ -583,9 +858,13 @@ with **180 merged pull requests** since the first 2.0 milestone tag.
[#3582]: https://github.com/bytedance/deer-flow/pull/3582 [#3582]: https://github.com/bytedance/deer-flow/pull/3582
[#3583]: https://github.com/bytedance/deer-flow/pull/3583 [#3583]: https://github.com/bytedance/deer-flow/pull/3583
[#3584]: https://github.com/bytedance/deer-flow/pull/3584 [#3584]: https://github.com/bytedance/deer-flow/pull/3584
[#3585]: https://github.com/bytedance/deer-flow/pull/3585
[#3590]: https://github.com/bytedance/deer-flow/pull/3590
[#3591]: https://github.com/bytedance/deer-flow/pull/3591 [#3591]: https://github.com/bytedance/deer-flow/pull/3591
[#3592]: https://github.com/bytedance/deer-flow/pull/3592
[#3599]: https://github.com/bytedance/deer-flow/pull/3599 [#3599]: https://github.com/bytedance/deer-flow/pull/3599
[#3600]: https://github.com/bytedance/deer-flow/pull/3600 [#3600]: https://github.com/bytedance/deer-flow/pull/3600
[#3601]: https://github.com/bytedance/deer-flow/pull/3601
[#3602]: https://github.com/bytedance/deer-flow/pull/3602 [#3602]: https://github.com/bytedance/deer-flow/pull/3602
[#3605]: https://github.com/bytedance/deer-flow/pull/3605 [#3605]: https://github.com/bytedance/deer-flow/pull/3605
[#3606]: https://github.com/bytedance/deer-flow/pull/3606 [#3606]: https://github.com/bytedance/deer-flow/pull/3606
@ -594,15 +873,217 @@ with **180 merged pull requests** since the first 2.0 milestone tag.
[#3611]: https://github.com/bytedance/deer-flow/pull/3611 [#3611]: https://github.com/bytedance/deer-flow/pull/3611
[#3623]: https://github.com/bytedance/deer-flow/pull/3623 [#3623]: https://github.com/bytedance/deer-flow/pull/3623
[#3624]: https://github.com/bytedance/deer-flow/pull/3624 [#3624]: https://github.com/bytedance/deer-flow/pull/3624
[#3627]: https://github.com/bytedance/deer-flow/pull/3627
[#3629]: https://github.com/bytedance/deer-flow/pull/3629 [#3629]: https://github.com/bytedance/deer-flow/pull/3629
[#3631]: https://github.com/bytedance/deer-flow/pull/3631 [#3631]: https://github.com/bytedance/deer-flow/pull/3631
[#3637]: https://github.com/bytedance/deer-flow/pull/3637
[#3644]: https://github.com/bytedance/deer-flow/pull/3644
[#3646]: https://github.com/bytedance/deer-flow/pull/3646 [#3646]: https://github.com/bytedance/deer-flow/pull/3646
[#3648]: https://github.com/bytedance/deer-flow/pull/3648
[#3649]: https://github.com/bytedance/deer-flow/pull/3649 [#3649]: https://github.com/bytedance/deer-flow/pull/3649
[#3651]: https://github.com/bytedance/deer-flow/pull/3651
[#3654]: https://github.com/bytedance/deer-flow/pull/3654 [#3654]: https://github.com/bytedance/deer-flow/pull/3654
[#3657]: https://github.com/bytedance/deer-flow/pull/3657 [#3657]: https://github.com/bytedance/deer-flow/pull/3657
[#3658]: https://github.com/bytedance/deer-flow/pull/3658 [#3658]: https://github.com/bytedance/deer-flow/pull/3658
[#3661]: https://github.com/bytedance/deer-flow/pull/3661
[#3662]: https://github.com/bytedance/deer-flow/pull/3662
[#3663]: https://github.com/bytedance/deer-flow/pull/3663
[#3665]: https://github.com/bytedance/deer-flow/pull/3665
[#3673]: https://github.com/bytedance/deer-flow/pull/3673
[#3674]: https://github.com/bytedance/deer-flow/pull/3674
[#3675]: https://github.com/bytedance/deer-flow/pull/3675
[#3685]: https://github.com/bytedance/deer-flow/pull/3685
[#3686]: https://github.com/bytedance/deer-flow/pull/3686
[#3687]: https://github.com/bytedance/deer-flow/pull/3687
[#3698]: https://github.com/bytedance/deer-flow/pull/3698
[#3709]: https://github.com/bytedance/deer-flow/pull/3709
[#3711]: https://github.com/bytedance/deer-flow/pull/3711
[#3713]: https://github.com/bytedance/deer-flow/pull/3713
[#3714]: https://github.com/bytedance/deer-flow/pull/3714
[#3718]: https://github.com/bytedance/deer-flow/pull/3718
[#3719]: https://github.com/bytedance/deer-flow/pull/3719
[#3729]: https://github.com/bytedance/deer-flow/pull/3729
[#3730]: https://github.com/bytedance/deer-flow/pull/3730
[#3733]: https://github.com/bytedance/deer-flow/pull/3733
[#3740]: https://github.com/bytedance/deer-flow/pull/3740
[#3753]: https://github.com/bytedance/deer-flow/pull/3753
[#3760]: https://github.com/bytedance/deer-flow/pull/3760
[#3764]: https://github.com/bytedance/deer-flow/pull/3764
[#3768]: https://github.com/bytedance/deer-flow/pull/3768
[#3769]: https://github.com/bytedance/deer-flow/pull/3769
[#3770]: https://github.com/bytedance/deer-flow/pull/3770
[#3772]: https://github.com/bytedance/deer-flow/pull/3772
[#3775]: https://github.com/bytedance/deer-flow/pull/3775
[#3786]: https://github.com/bytedance/deer-flow/pull/3786
[#3790]: https://github.com/bytedance/deer-flow/pull/3790
[#3791]: https://github.com/bytedance/deer-flow/pull/3791
[#3797]: https://github.com/bytedance/deer-flow/pull/3797
[#3800]: https://github.com/bytedance/deer-flow/pull/3800
[#3809]: https://github.com/bytedance/deer-flow/pull/3809
[#3810]: https://github.com/bytedance/deer-flow/pull/3810
[#3812]: https://github.com/bytedance/deer-flow/pull/3812
[#3821]: https://github.com/bytedance/deer-flow/pull/3821
[#3826]: https://github.com/bytedance/deer-flow/pull/3826
[#3828]: https://github.com/bytedance/deer-flow/pull/3828
[#3837]: https://github.com/bytedance/deer-flow/pull/3837
[#3843]: https://github.com/bytedance/deer-flow/pull/3843
[#3845]: https://github.com/bytedance/deer-flow/pull/3845
[#3854]: https://github.com/bytedance/deer-flow/pull/3854
[#3855]: https://github.com/bytedance/deer-flow/pull/3855
[#3856]: https://github.com/bytedance/deer-flow/pull/3856
[#3858]: https://github.com/bytedance/deer-flow/pull/3858
[#3860]: https://github.com/bytedance/deer-flow/pull/3860
[#3866]: https://github.com/bytedance/deer-flow/pull/3866
[#3869]: https://github.com/bytedance/deer-flow/pull/3869
[#3870]: https://github.com/bytedance/deer-flow/pull/3870
[#3871]: https://github.com/bytedance/deer-flow/pull/3871
[#3872]: https://github.com/bytedance/deer-flow/pull/3872
[#3874]: https://github.com/bytedance/deer-flow/pull/3874
[#3877]: https://github.com/bytedance/deer-flow/pull/3877
[#3878]: https://github.com/bytedance/deer-flow/pull/3878
[#3880]: https://github.com/bytedance/deer-flow/pull/3880
[#3881]: https://github.com/bytedance/deer-flow/pull/3881
[#3883]: https://github.com/bytedance/deer-flow/pull/3883
[#3885]: https://github.com/bytedance/deer-flow/pull/3885
[#3886]: https://github.com/bytedance/deer-flow/pull/3886
[#3887]: https://github.com/bytedance/deer-flow/pull/3887
[#3889]: https://github.com/bytedance/deer-flow/pull/3889
[#3897]: https://github.com/bytedance/deer-flow/pull/3897
[#3900]: https://github.com/bytedance/deer-flow/pull/3900
[#3902]: https://github.com/bytedance/deer-flow/pull/3902
[#3904]: https://github.com/bytedance/deer-flow/pull/3904
[#3906]: https://github.com/bytedance/deer-flow/pull/3906
[#3907]: https://github.com/bytedance/deer-flow/pull/3907
[#3908]: https://github.com/bytedance/deer-flow/pull/3908
[#3912]: https://github.com/bytedance/deer-flow/pull/3912
[#3917]: https://github.com/bytedance/deer-flow/pull/3917
[#3920]: https://github.com/bytedance/deer-flow/pull/3920
[#3924]: https://github.com/bytedance/deer-flow/pull/3924
[#3926]: https://github.com/bytedance/deer-flow/pull/3926
[#3927]: https://github.com/bytedance/deer-flow/pull/3927
[#3928]: https://github.com/bytedance/deer-flow/pull/3928
[#3931]: https://github.com/bytedance/deer-flow/pull/3931
[#3934]: https://github.com/bytedance/deer-flow/pull/3934
[#3935]: https://github.com/bytedance/deer-flow/pull/3935
[#3938]: https://github.com/bytedance/deer-flow/pull/3938
[#3940]: https://github.com/bytedance/deer-flow/pull/3940
[#3941]: https://github.com/bytedance/deer-flow/pull/3941
[#3942]: https://github.com/bytedance/deer-flow/pull/3942
[#3944]: https://github.com/bytedance/deer-flow/pull/3944
[#3945]: https://github.com/bytedance/deer-flow/pull/3945
[#3949]: https://github.com/bytedance/deer-flow/pull/3949
[#3950]: https://github.com/bytedance/deer-flow/pull/3950
[#3951]: https://github.com/bytedance/deer-flow/pull/3951
[#3956]: https://github.com/bytedance/deer-flow/pull/3956
[#3959]: https://github.com/bytedance/deer-flow/pull/3959
[#3961]: https://github.com/bytedance/deer-flow/pull/3961
[#3966]: https://github.com/bytedance/deer-flow/pull/3966
[#3967]: https://github.com/bytedance/deer-flow/pull/3967
[#3969]: https://github.com/bytedance/deer-flow/pull/3969
[#3976]: https://github.com/bytedance/deer-flow/pull/3976
[#3980]: https://github.com/bytedance/deer-flow/pull/3980
[#3982]: https://github.com/bytedance/deer-flow/pull/3982
[#3985]: https://github.com/bytedance/deer-flow/pull/3985
[#3986]: https://github.com/bytedance/deer-flow/pull/3986
[#3988]: https://github.com/bytedance/deer-flow/pull/3988
[#3989]: https://github.com/bytedance/deer-flow/pull/3989
[#3990]: https://github.com/bytedance/deer-flow/pull/3990
[#3991]: https://github.com/bytedance/deer-flow/pull/3991
[#3992]: https://github.com/bytedance/deer-flow/pull/3992
[#3993]: https://github.com/bytedance/deer-flow/pull/3993
[#3994]: https://github.com/bytedance/deer-flow/pull/3994
[#3996]: https://github.com/bytedance/deer-flow/pull/3996
[#4003]: https://github.com/bytedance/deer-flow/pull/4003
[#4004]: https://github.com/bytedance/deer-flow/pull/4004
[#4008]: https://github.com/bytedance/deer-flow/pull/4008
[#4009]: https://github.com/bytedance/deer-flow/pull/4009
[#4012]: https://github.com/bytedance/deer-flow/pull/4012
[#4016]: https://github.com/bytedance/deer-flow/pull/4016
[#4017]: https://github.com/bytedance/deer-flow/pull/4017
[#4018]: https://github.com/bytedance/deer-flow/pull/4018
[#4023]: https://github.com/bytedance/deer-flow/pull/4023
[#4024]: https://github.com/bytedance/deer-flow/pull/4024
[#4026]: https://github.com/bytedance/deer-flow/pull/4026
[#4028]: https://github.com/bytedance/deer-flow/pull/4028
[#4033]: https://github.com/bytedance/deer-flow/pull/4033
[#4034]: https://github.com/bytedance/deer-flow/pull/4034
[#4035]: https://github.com/bytedance/deer-flow/pull/4035
[#4036]: https://github.com/bytedance/deer-flow/pull/4036
[#4038]: https://github.com/bytedance/deer-flow/pull/4038
[#4040]: https://github.com/bytedance/deer-flow/pull/4040
[#4051]: https://github.com/bytedance/deer-flow/pull/4051
[#4052]: https://github.com/bytedance/deer-flow/pull/4052
[#4053]: https://github.com/bytedance/deer-flow/pull/4053
[#4055]: https://github.com/bytedance/deer-flow/pull/4055
[#4058]: https://github.com/bytedance/deer-flow/pull/4058
[#4059]: https://github.com/bytedance/deer-flow/pull/4059
[#4060]: https://github.com/bytedance/deer-flow/pull/4060
[#4064]: https://github.com/bytedance/deer-flow/pull/4064
[#4065]: https://github.com/bytedance/deer-flow/pull/4065
[#4067]: https://github.com/bytedance/deer-flow/pull/4067
[#4069]: https://github.com/bytedance/deer-flow/pull/4069
[#4072]: https://github.com/bytedance/deer-flow/pull/4072
[#4073]: https://github.com/bytedance/deer-flow/pull/4073
[#4074]: https://github.com/bytedance/deer-flow/pull/4074
[#4076]: https://github.com/bytedance/deer-flow/pull/4076
[#4077]: https://github.com/bytedance/deer-flow/pull/4077
[#4078]: https://github.com/bytedance/deer-flow/pull/4078
[#4079]: https://github.com/bytedance/deer-flow/pull/4079
[#4080]: https://github.com/bytedance/deer-flow/pull/4080
[#4082]: https://github.com/bytedance/deer-flow/pull/4082
[#4085]: https://github.com/bytedance/deer-flow/pull/4085
[#4090]: https://github.com/bytedance/deer-flow/pull/4090
[#4094]: https://github.com/bytedance/deer-flow/pull/4094
[#4095]: https://github.com/bytedance/deer-flow/issues/4095 [#4095]: https://github.com/bytedance/deer-flow/issues/4095
[#4096]: https://github.com/bytedance/deer-flow/pull/4096
[#4098]: https://github.com/bytedance/deer-flow/pull/4098 [#4098]: https://github.com/bytedance/deer-flow/pull/4098
[#4099]: https://github.com/bytedance/deer-flow/pull/4099
[#4100]: https://github.com/bytedance/deer-flow/pull/4100
[#4102]: https://github.com/bytedance/deer-flow/pull/4102
[#4103]: https://github.com/bytedance/deer-flow/pull/4103
[#4104]: https://github.com/bytedance/deer-flow/pull/4104
[#4108]: https://github.com/bytedance/deer-flow/pull/4108
[#4114]: https://github.com/bytedance/deer-flow/pull/4114
[#4115]: https://github.com/bytedance/deer-flow/pull/4115
[#4118]: https://github.com/bytedance/deer-flow/pull/4118
[#4119]: https://github.com/bytedance/deer-flow/pull/4119
[#4122]: https://github.com/bytedance/deer-flow/pull/4122
[#4124]: https://github.com/bytedance/deer-flow/pull/4124
[#4129]: https://github.com/bytedance/deer-flow/pull/4129
[#4130]: https://github.com/bytedance/deer-flow/pull/4130
[#4131]: https://github.com/bytedance/deer-flow/pull/4131
[#4136]: https://github.com/bytedance/deer-flow/pull/4136
[#4137]: https://github.com/bytedance/deer-flow/pull/4137
[#4140]: https://github.com/bytedance/deer-flow/pull/4140
[#4141]: https://github.com/bytedance/deer-flow/pull/4141
[#4143]: https://github.com/bytedance/deer-flow/pull/4143
[#4146]: https://github.com/bytedance/deer-flow/pull/4146 [#4146]: https://github.com/bytedance/deer-flow/pull/4146
[#4147]: https://github.com/bytedance/deer-flow/pull/4147
[#4154]: https://github.com/bytedance/deer-flow/pull/4154
[#4155]: https://github.com/bytedance/deer-flow/pull/4155
[#4157]: https://github.com/bytedance/deer-flow/pull/4157
[#4160]: https://github.com/bytedance/deer-flow/pull/4160
[#4161]: https://github.com/bytedance/deer-flow/pull/4161
[#4162]: https://github.com/bytedance/deer-flow/pull/4162
[#4166]: https://github.com/bytedance/deer-flow/pull/4166
[#4169]: https://github.com/bytedance/deer-flow/pull/4169
[#4181]: https://github.com/bytedance/deer-flow/pull/4181
[#4188]: https://github.com/bytedance/deer-flow/pull/4188
[#4190]: https://github.com/bytedance/deer-flow/pull/4190 [#4190]: https://github.com/bytedance/deer-flow/pull/4190
[#4192]: https://github.com/bytedance/deer-flow/issues/4192 [#4192]: https://github.com/bytedance/deer-flow/issues/4192
[#4193]: https://github.com/bytedance/deer-flow/pull/4193
[#4199]: https://github.com/bytedance/deer-flow/pull/4199
[#4202]: https://github.com/bytedance/deer-flow/pull/4202
[#4203]: https://github.com/bytedance/deer-flow/pull/4203
[#4209]: https://github.com/bytedance/deer-flow/pull/4209
[#4215]: https://github.com/bytedance/deer-flow/pull/4215
[#4217]: https://github.com/bytedance/deer-flow/pull/4217
[#4218]: https://github.com/bytedance/deer-flow/pull/4218
[#4219]: https://github.com/bytedance/deer-flow/pull/4219
[#4222]: https://github.com/bytedance/deer-flow/pull/4222
[#4229]: https://github.com/bytedance/deer-flow/pull/4229
[#4235]: https://github.com/bytedance/deer-flow/pull/4235
[#4245]: https://github.com/bytedance/deer-flow/pull/4245
[#4246]: https://github.com/bytedance/deer-flow/pull/4246
[#4251]: https://github.com/bytedance/deer-flow/pull/4251
[#4264]: https://github.com/bytedance/deer-flow/pull/4264