feat(platform): workflow update approval flow

[larryro]

Summary

• Add workflow_update approval type so that workflow saves and step patches go through explicit user approval before being applied
• Decouple the AI chat panel from the step editor side panel, making it persist independently at the route level
• Simplify approval rendering by showing approvals inline next to their associated message, and increase message history to 100

Test plan

• Verify workflow save triggers an approval card in the chat
• Verify step updates trigger an approval card in the chat
• Approve and reject workflow updates, confirm changes apply/revert correctly
• Confirm AI chat panel persists when switching between steps
• Confirm side panel resizing works correctly
• Run unit tests: execute_approved_workflow_update, save_workflow_definition_tool, update_workflow_step_tool, MessageList, circular_dependency_validator

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Summary by CodeRabbit

Release Notes

• New Features

  • Added workflow update approval system—users can now review and approve workflow changes before they're applied.
  • Introduced AI assistant integration for automations with a resizable side panel.
  • Workflow updates now display as approval cards in chat, showing change summaries and execution results.

• Changes

  • Workflow modification tools now require an update summary description and create approvals instead of applying changes immediately.
  • Improved automation navigation and UI structure for better approval handling.

[greptile-apps]

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[coderabbitai]

Caution

Review failed

Pull request was closed or merged during review

📝 Walkthrough

Walkthrough

This PR implements a workflow update approval system for automations. The changes introduce approval-based workflows where tools like save_workflow_definition and update_workflow_step create approval records instead of applying changes immediately. It adds frontend components for rendering and managing workflow update approvals in chat interfaces and automation panels, new hooks for approval data fetching and panel resizing, and backend actions/mutations for creating and executing workflow approvals. The system displays approval cards with approve/reject actions and tracks execution results. Existing automation UI components are refactored to support approval visibility and management across chat, automations, and custom agent features.

Estimated code review effort

🎯 4 (Complex) | ⏱️ ~50 minutes

Possibly related PRs

• feat: UI updates and automation enhancements #275: Modifies overlapping automation UI files (automation-assistant.tsx, automation-sidepanel.tsx, automation-steps.tsx) and related hooks with related component logic updates.
• feat(platform): improve chat UI and tools auto-save feedback #717: Updates the same message-list.tsx component in automations with approval-aware rendering and message-to-approval linking logic.
• fix(automations): remove broken AI thread init, fix nav search param, remove rounded-full #683: Modifies automation navigation panel query parameter handling (panel=ai-chat) which interacts with the new approval panel visibility logic.

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 6.25% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The PR title 'feat(platform): workflow update approval flow' accurately summarizes the main feature being added—a new approval workflow for updating automation steps and saving workflows. It is clear, concise, and directly reflects the core changes.

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✨ Finishing Touches

• 📝 Generate docstrings (stacked PR)
• 📝 Generate docstrings (commit on current branch)

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feat/workflow-update-approvals

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