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Add Initial State Presets Manager to Runner Panel - #16

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feature/initial-state-presets-5852457557385843694
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Add Initial State Presets Manager to Runner Panel#16
Jacobcdsmith wants to merge 1 commit into
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feature/initial-state-presets-5852457557385843694

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@Jacobcdsmith

@Jacobcdsmith Jacobcdsmith commented Jul 30, 2026

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This change introduces a fully functional, highly polished State Presets management feature within the browser sandbox run drawer. It allows users to quickly save, apply, and manage multiple initial JSON states for testing different branches and scenarios of their AI agent workflows. It comes pre-packaged with default presets optimized for standard templates and stores custom presets locally in browser localStorage, partitioned by the active workflow.


PR created automatically by Jules for task 5852457557385843694 started by @Jacobcdsmith

Summary by CodeRabbit

  • New Features

    • Added state presets for workflow runs, including built-in defaults and workflow-specific custom presets.
    • Added a preset selector to load saved initial state JSON.
    • Added options to save custom presets and delete saved presets.
    • Added JSON validation feedback for initial state editing.
  • Bug Fixes

    • Preset data now persists across sessions and remains isolated by workflow.
  • Tests

    • Added coverage for loading, saving, deleting, and default preset behavior.

- Implements structured StatePreset interface and helper utility functions in statePresets.ts
- Provides pre-configured default presets tailored to template workflows (ReAct, HTTP Router, Translation HITL) and general testing
- Adds dropdown list inside the Run Drawer allowing immediate selection and applying of preset JSON inputs
- Incorporates inline preset creation/saving and deletion with local storage persistence
- Includes thorough unit testing in statePresets.test.ts to guarantee correct saving, partitioning, merging, and deleting behavior
- Passes full test suite with no regressions
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@coderabbitai

coderabbitai Bot commented Jul 30, 2026

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Review Change Stack

📝 Walkthrough

Walkthrough

Adds workflow-scoped state presets with embedded defaults, localStorage persistence for custom presets, and run drawer controls for selecting, saving, validating, and deleting presets.

Changes

State Presets

Layer / File(s) Summary
Preset defaults and persistence
frontend/src/flow/statePresets.ts
Defines default preset data and loads or saves only custom presets using workflow-specific localStorage keys.
Run drawer preset workflow
frontend/src/pages/Index.tsx
Synchronizes presets with the active workflow and adds preset selection, validation, saving, and deletion controls.
Preset persistence tests
frontend/src/test/statePresets.test.ts
Tests default fallback behavior, custom preset persistence, default filtering, and deletion.

Estimated code review effort: 3 (Moderate) | ~25 minutes

Sequence Diagram(s)

sequenceDiagram
  participant RunDrawer
  participant IndexPage
  participant StatePresets
  participant LocalStorage
  RunDrawer->>IndexPage: select or edit initial state
  IndexPage->>StatePresets: loadStatePresets(activeWorkflowId)
  StatePresets->>LocalStorage: read workflow-scoped custom presets
  LocalStorage-->>StatePresets: stored preset JSON
  StatePresets-->>IndexPage: merged preset list
  IndexPage-->>RunDrawer: update preset list and initial state
  IndexPage->>StatePresets: saveStatePresets(workflowId, presets)
  StatePresets->>LocalStorage: persist custom presets
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Possibly related PRs

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name Status Explanation Resolution
Docstring Coverage ⚠️ Warning Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Write docstrings for the functions missing them to satisfy the coverage threshold.
✅ Passed checks (4 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed The title accurately summarizes the main change: adding an initial state presets manager to the runner panel.
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.
✨ Finishing Touches 💡 1
📝 Generate docstrings 💡
  • Create stacked PR
  • Commit on current branch
🧪 Generate unit tests (beta)
  • Create PR with unit tests
  • Commit unit tests in branch feature/initial-state-presets-5852457557385843694

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🧹 Nitpick comments (2)
frontend/src/test/statePresets.test.ts (2)

45-69: 📐 Maintainability & Code Quality | 🔵 Trivial | ⚡ Quick win

Verify isolation across workflow IDs.

This round-trip test does not prove presets saved for one workflow cannot appear in another workflow.

Proposed test addition
     const loaded = loadStatePresets(workflowId);
     expect(loaded.length).toBe(initial.length + 1);

+    expect(loadStatePresets("another-custom-flow"))
+      .toEqual(DEFAULT_PRESETS["general"]);
+
     const foundCustom = loaded.find(p => p.id === "preset-custom-abc");
🤖 Prompt for 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.

In `@frontend/src/test/statePresets.test.ts` around lines 45 - 69, Extend the test
around loadStatePresets and saveStatePresets to load presets for a different
workflowId after saving the custom preset, and assert that the other workflow
retains only DEFAULT_PRESETS["general"] without the custom entry. Keep the
existing round-trip assertions for the original workflow unchanged.

29-38: 📐 Maintainability & Code Quality | 🔵 Trivial | ⚡ Quick win

Exercise the "general" workflow path.

The test never calls loadStatePresets("general"); null takes a different early-return path.

Proposed test addition
     expect(generalPresets[0].id).toBe("general-hello");

+    const explicitGeneralPresets = loadStatePresets("general");
+    expect(explicitGeneralPresets).toEqual(DEFAULT_PRESETS["general"]);
+
     const templatePresets = loadStatePresets("template-react");
🤖 Prompt for 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.

In `@frontend/src/test/statePresets.test.ts` around lines 29 - 38, Update the test
case around loadStatePresets to explicitly call loadStatePresets("general") in
addition to the null workflow case, and assert that the explicit general
workflow returns the expected DEFAULT_PRESETS["general"] length and
"general-hello" first preset ID.
🤖 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.

Nitpick comments:
In `@frontend/src/test/statePresets.test.ts`:
- Around line 45-69: Extend the test around loadStatePresets and
saveStatePresets to load presets for a different workflowId after saving the
custom preset, and assert that the other workflow retains only
DEFAULT_PRESETS["general"] without the custom entry. Keep the existing
round-trip assertions for the original workflow unchanged.
- Around line 29-38: Update the test case around loadStatePresets to explicitly
call loadStatePresets("general") in addition to the null workflow case, and
assert that the explicit general workflow returns the expected
DEFAULT_PRESETS["general"] length and "general-hello" first preset ID.

ℹ️ Review info
⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: dbdcc7cf-5687-4d21-98e2-214d13783750

📥 Commits

Reviewing files that changed from the base of the PR and between 0b7a689 and eba0c85.

📒 Files selected for processing (3)
  • frontend/src/flow/statePresets.ts
  • frontend/src/pages/Index.tsx
  • frontend/src/test/statePresets.test.ts

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