feat(studio): Coding agent split selection

[dmariali]

Summary by CodeRabbit

• New Features
  • Added Studio UI navigation suggestions that link users to relevant destinations based on their prompt (including guardrails and evaluation workflows).
  • Introduced a pre-run choice that lets users either continue in chat or open the suggested Studio UI.
  • Updated the chat thread UI to present “Open Guardrails” vs “Continue in chat” when applicable.
• Bug Fixes
  • Prevented navigation requests and run state from carrying over across prompts or session loads; cancels cleanly when a run is aborted.
• Tests
  • Expanded coverage for suggestion matching and the before-run decision/cancel flow.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

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📥 Commits

Reviewing files that changed from the base of the PR and between 50d3b03 and dcc0dbf.

📒 Files selected for processing (8)

• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/ClaudeCodeChatThread.test.tsx
• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/ClaudeCodeChatThread.tsx
• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/studioUiNavigationSuggestions.test.ts
• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/studioUiNavigationSuggestions.ts
• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/useClaudeCodeChatRuntime.test.ts
• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/useClaudeCodeChatRuntime.ts
• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/useCustomAssistantChatRuntime.test.ts
• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/useCustomAssistantChatRuntime.ts

🚧 Files skipped from review as they are similar to previous changes (8)

• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/useCustomAssistantChatRuntime.test.ts
• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/useClaudeCodeChatRuntime.test.ts
• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/ClaudeCodeChatThread.test.tsx
• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/studioUiNavigationSuggestions.test.ts
• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/studioUiNavigationSuggestions.ts
• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/useCustomAssistantChatRuntime.ts
• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/useClaudeCodeChatRuntime.ts
• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/ClaudeCodeChatThread.tsx

---

📝 Walkthrough

Walkthrough

Adds prompt-based Studio UI navigation suggestions and a pre-run decision flow for Claude Code chat. Matching prompts can now pause execution, surface Studio navigation choices in the thread, and either continue the run or navigate away.

Changes

Studio UI Navigation Decision Flow

Layer / File(s)	Summary
Suggestion catalog and matching web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/studioUiNavigationSuggestions.ts, web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/studioUiNavigationSuggestions.test.ts	Defines the navigation suggestion type, destination catalog, feature-flag gating, and prompt matching, with tests covering matching and disabled cases.
Before-run hook web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/useCustomAssistantChatRuntime.ts, web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/useCustomAssistantChatRuntime.test.ts	Adds the pre-run callback types and hook option, then awaits the callback during completion and cancels on reject, abort, or explicit cancel, with tests for continue and cancel paths.
Navigation request state web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/useClaudeCodeChatRuntime.ts, web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/useClaudeCodeChatRuntime.test.ts	Adds studio navigation decision types, pending request state, resolver helpers, pre-run suggestion handling, reset/session cleanup, and returned runtime fields, with runtime tests covering navigation and continue outcomes.
Chat thread navigation UI web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/ClaudeCodeChatThread.tsx, web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/ClaudeCodeChatThread.test.tsx	Adds studio navigation choices, submit handling, scroll and running-indicator updates, and composer rendering for the navigation decision, with route-level UI tests.

Possibly Related PRs

• NVIDIA-NeMo/nemo-platform#144: Introduces the Claude Code chat route and base useClaudeCodeChatRuntime that this PR extends.
• NVIDIA-NeMo/nemo-platform#155: Adds the AgentDecisionInput-driven decision flow used by the chat-thread navigation branch.

Suggested Reviewers

• htolentino-nvidia

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title matches the main change: adding a Studio-driven split between opening the UI and continuing in chat.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch coding_agent_split_selection

---

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In
`@web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/studioUiNavigationSuggestions.ts`:
- Around line 95-98: The trigger patterns in studioUiNavigationSuggestions are
too broad and can catch normal coding requests. Tighten the regexes in the
suggestion list (including the token usage and annotation-related entries) so
they only match when paired with product-specific context like agent, intake,
workspace, or similar qualifiers. Update the matching logic in the relevant
suggestion arrays to avoid opening the Studio decision UI for generic code
prompts while preserving the intended navigation shortcuts.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

Run ID: 4bae6b5c-78d6-4ccf-a4bc-c81ce5aec337

📥 Commits

Reviewing files that changed from the base of the PR and between d8ea9e2 and 51cc70e.

📒 Files selected for processing (8)

• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/index.test.tsx
• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/index.tsx
• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/studioUiNavigationSuggestions.test.ts
• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/studioUiNavigationSuggestions.ts
• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/useClaudeCodeChatRuntime.test.ts
• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/useClaudeCodeChatRuntime.ts
• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/useCustomAssistantChatRuntime.test.ts
• web/packages/studio/src/routes/agents/ClaudeCodeChatRoute/useCustomAssistantChatRuntime.ts

[github-actions]

Suite	Lines Covered	Line Rate	Branch Rate
Unit Tests	20908/27474	76.1%	61.2%
Integration Tests	12109/26243	46.1%	19.5%