* feat(subagents): support per-subagent skill loading and custom subagent types (#2230)
Add per-subagent skill configuration and custom subagent type registration,
aligned with Codex's role-based config layering and per-session skill injection.
Backend:
- SubagentConfig gains `skills` field (None=all, []=none, list=whitelist)
- New CustomSubagentConfig for user-defined subagent types in config.yaml
- SubagentsAppConfig gains `custom_agents` section and `get_skills_for()`
- Registry resolves custom agents with three-layer config precedence
- SubagentExecutor loads skills per-session as conversation items (Codex pattern)
- task_tool no longer appends skills to system_prompt
- Lead agent system prompt dynamically lists all registered subagent types
- setup_agent tool accepts optional skills parameter
- Gateway agents API transparently passes skills in CRUD operations
Frontend:
- Agent/CreateAgentRequest/UpdateAgentRequest types include skills field
- Agent card displays skills as badges alongside tool_groups
Config:
- config.example.yaml documents custom_agents and per-agent skills override
Tests:
- 40 new tests covering all skill config, custom agents, and registry logic
- Existing tests updated for new get_skills_prompt_section signature
Closes#2230
* fix: address review feedback on skills PR
- Remove stale get_skills_prompt_section monkeypatches from test_task_tool_core_logic.py
(task_tool no longer imports this function after skill injection moved to executor)
- Add key prefixes (tg:/sk:) to agent-card badges to prevent React key collisions
between tool_groups and skills
* fix(ci): resolve lint and test failures
- Format agent-card.tsx with prettier (lint-frontend)
- Remove stale "Skills Appendix" system_prompt assertion — skills are now
loaded per-session by SubagentExecutor, not appended to system_prompt
* fix(ci): sort imports in test_subagent_skills_config.py (ruff I001)
* fix(ci): use nullish coalescing in agent-card badge condition (eslint)
* fix: address review feedback on skills PR
- Use model_fields_set in AgentUpdateRequest to distinguish "field omitted"
from "explicitly set to null" — fixes skills=None ambiguity where None
means "inherit all" but was treated as "don't change"
- Move lazy import of get_subagent_config outside loop in
_build_available_subagents_description to avoid repeated import overhead
---------
Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
When NEXT_PUBLIC_BACKEND_BASE_URL is unset, the frontend proxies API
requests to the gateway. Only /api/agents and /api/skills had rewrite
rules, causing 404s for /api/models, /api/threads, /api/memory,
/api/mcp, /api/suggestions, /api/runs, etc.
Add a catch-all /api/:path* rewrite that proxies all remaining gateway
API routes. The existing /api/langgraph rewrite takes priority because
it is pushed to the array first (Next.js checks rewrites in order).
Fixes#2327
Co-authored-by: JasonOA888 <JasonOA888@users.noreply.github.com>
* fix(frontend): make Suggestion button opaque in dark mode
The outline Button variant applies dark:bg-input/30, leaving Suggestion
pills ~70% transparent in dark mode. Scrolled chat content bled through
the buttons, making suggestion text unreadable. Override with
dark:bg-background so it matches the opaque light-mode appearance.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix the lint error of commit
---------
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
After a page refresh, the artifact panel's autoOpen/autoSelect state is
reset to true. Submitting a new question flips thread.isLoading to true,
which message-list passes to every MessageGroup — including historical
ones. The previous response's last write_file step then satisfies the
auto-open condition and re-pops the stale artifact.
Gate the auto-open on the tool call having no result yet, so only a
write_file that is still streaming in the current response can trigger
it; rehydrated tool calls always carry a result and are now skipped.
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Fixes#2203
When NEXT_PUBLIC_BACKEND_BASE_URL is not set, the frontend uses Next.js
rewrites to proxy API calls to the gateway. Skills API routes were missing
from the rewrite config, causing /api/skills to return the SPA HTML instead
of JSON, which produced 'Unexpected token <' errors in the skill settings page.
Co-authored-by: JasonOA888 <JasonOA888@users.noreply.github.com>
* fix(gateway): forward agent_name and is_bootstrap from context to configurable
The frontend sends agent_name and is_bootstrap via the context field
in run requests, but services.py only forwards a hardcoded whitelist
of keys (_CONTEXT_CONFIGURABLE_KEYS) into the agent's configurable
dict. Since agent_name was missing, custom agents never received
their name — make_lead_agent always fell back to the default lead
agent, skipping SOUL.md, per-agent config and skill filtering.
Similarly, is_bootstrap was dropped, so the bootstrap creation flow
could never activate the setup_agent tool path.
Add both keys to the whitelist so they reach make_lead_agent.
Fixes#2222
* fix(frontend): resolve /mnt/ links in markdown to artifact API URLs
AI agent messages contain links like /mnt/user-data/outputs/file.pdf
which were rendered as-is in the browser, resulting in 404 errors.
Images already got the correct treatment via MessageImage and
resolveArtifactURL, but anchor tags (<a>) were passed through
unchanged.
Add an 'a' component override in MessageContent_ that rewrites
/mnt/-prefixed hrefs to the artifact API endpoint, matching the
existing image handling pattern.
Fixes#2232
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Co-authored-by: JasonOA888 <JasonOA888@users.noreply.github.com>
Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
* feat: set up Vitest frontend testing infrastructure with CI workflow
Migrate existing 4 frontend test files from Node.js native test runner
(node:test + node:assert/strict) to Vitest, reorganize test directory
structure under tests/unit/ mirroring src/ layout, and add a dedicated
CI workflow for frontend unit tests.
- Add vitest as devDependency, remove tsx
- Create vitest.config.ts with @/ path alias
- Migrate tests to Vitest API (test/expect/vi)
- Rename .mjs test files to .ts
- Move tests from src/ to tests/unit/ (mirrors src/ layout)
- Add frontend/Makefile `test` target
- Add .github/workflows/frontend-unit-tests.yml (parallel to backend)
- Update CONTRIBUTING.md, README.md, AGENTS.md, CLAUDE.md
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* style: fix the lint error
* style: fix the lint error
---------
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
* feat(blog): implement blog structure with post listing and tagging functionality
* feat(blog): enhance blog layout and post metadata display with new components
* fix(blog): address PR #1962 review feedback and fix lint issues (#14)
* fix: format
---------
Co-authored-by: Copilot <198982749+Copilot@users.noreply.github.com>
* fix(frontend): replace invalid "context" select field with "metadata" in threads.search
The LangGraph API server does not support "context" as a select field for
threads/search, causing a 422 Unprocessable Entity error introduced by
commit 60e0abf (#1771).
- Replace "context" with "metadata" in the default select list
- Persist agent_name into thread metadata on creation so search results
carry the agent identity
- Update pathOfThread() to fall back to metadata.agent_name when
context is unavailable from search results
- Add regression tests for metadata-based agent routing
Fixes#2037
Made-with: Cursor
* fix: apply Copilot suggestions
* style: fix the lint error
* Fix HTML artifact preview rendering
* Add after screenshot for HTML preview fix
* Add before screenshot for HTML preview fix
* Update before screenshot for HTML preview fix
* Update after screenshot for HTML preview fix
* Update before screenshot to Tsinghua homepage repro
* Update after screenshot to Tsinghua homepage preview
* Address PR review on HTML artifact preview
* Harden HTML artifact preview isolation
Streamdown's streaming safeguard appends closing markers (e.g. `*`) to
text with unmatched markdown syntax. This causes user messages containing
literal `*` (such as `99 * 87`) to display with a spurious trailing
asterisk. Human messages are always complete, so the incomplete-markdown
pre-processing is unnecessary.
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
After history.replaceState updates the URL from /chats/new to
/chats/{UUID}, Next.js useParams does not update because replaceState
bypasses the router. The useEffect in useThreadChat would then set
threadIdFromPath ('new') as the threadId, causing the LangGraph SDK
to call POST /threads/new/history which returns HTTP 422 (Invalid
thread ID: must be a UUID).
This fix adds a guard to skip the threadId update when
threadIdFromPath is the literal string 'new', preserving the
already-correct UUID that was set when the thread was created.
- Fix `font-norma` typo to `font-normal` in message-list subtask count
- Fix dark mode `--border` using reddish hue (22.216) instead of neutral
- Replace hardcoded `rgb(184,184,192)` in hero with `text-muted-foreground`
- Replace hardcoded `bg-[#a3a1a1]` in streaming indicator with `bg-muted-foreground`
- Add missing `font-sans` to welcome description `<pre>` for consistency
- Make case-study-section padding responsive (`px-4 md:px-20`)
Closes#1940
* fix(frontend): resolve layout flickering by migrating workspace sidebar state to cookie
* fix(frontend): unify local settings runtime state to fix state drift
* fix(frontend): only persist thread model on explicit context model updates
* fix(frontend): resolve invalid HTML nesting and tabnabbing vulnerabilities
Fix `<button>` inside `<a>` invalid HTML in artifact components and add
missing `noopener,noreferrer` to `window.open` calls to prevent reverse
tabnabbing.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix(frontend): address Copilot review on tabnabbing and double-tab-open
Remove redundant parent onClick on web_fetch ChainOfThoughtStep to
prevent opening two tabs on link click, and explicitly null out
window.opener after window.open() for defensive tabnabbing hardening.
---------
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Server-rendered data-variant={undefined} didn't match client hydration.
Now only render data-variant and data-size when explicitly set.
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: JeffJiang <for-eleven@hotmail.com>
* Add explicit save action for agent creation
* Hide internal save prompts and retry agent reads
---------
Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
* feat: add docs site
- Implemented dynamic routing for MDX documentation pages with language support.
- Created layout components for documentation with a header and footer.
- Added metadata for various documentation sections in English and Chinese.
- Developed initial content for the DeerFlow App and Harness documentation.
- Introduced i18n hooks and translations for English and Chinese languages.
- Enhanced header component to include navigation links for documentation and blog.
- Established a structure for tutorials and reference materials.
- Created a new translations file to manage locale-specific strings.
* feat: enhance documentation structure and content for application and harness sections
* feat: update .gitignore to include .playwright-mcp and remove obsolete Playwright YAML file
* fix(docs): correct punctuation and formatting in documentation files
* feat(docs): remove outdated index.mdx file from documentation
* fix(docs): update documentation links and improve Chinese description in index.mdx
* fix(docs): update title in Chinese for meta information in _meta.ts
* fix(frontend): add missing rel="noopener noreferrer" to target="_blank" links
Prevent tabnabbing attacks and referrer leakage by ensuring all
external links with target="_blank" include both noopener and
noreferrer in the rel attribute.
Made-with: Cursor
* style: fix code formatting
* fix(frontend): distinguish CORS errors from generic name check failures
* fix(frontend): improve network error message for agent name check
* Fix network error message in zh-CN locale
---------
Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
