feat: send opencode run params for sandbox prompts

[sweetmantech]

Summary

• Updates createSandbox to send command: "opencode" with args: ["run", prompt] instead of sending the raw prompt as command
• Users type natural language prompts (e.g. "build a hello world app") and the Chat UI constructs the correct params for the API/task to execute opencode run "build a hello world app" in the sandbox

Test plan

• Type a prompt in the /sandboxes textarea (e.g. "build a hello world app")
• Verify the API receives { command: "opencode", args: ["run", "build a hello world app"] }
• Verify the task executes opencode run "build a hello world app" in the sandbox

🤖 Generated with Claude Code

Summary by CodeRabbit

• Refactor
  • Enhanced the sandbox creation mechanism to support structured command handling and improved flexibility.

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Project	Deployment	Actions	Updated (UTC)
recoup-chat	Ready	Preview	Feb 6, 2026 2:42am

[coderabbitai]

📝 Walkthrough

Walkthrough

The createSandbox function API contract is updated to accept a prompt parameter instead of command, and the request payload structure is modified to send a structured command with arguments ({ command: "opencode", args: ["run", prompt] }) instead of a simple object.

Changes

Cohort / File(s)	Summary
Function Signature & Request Payload Update lib/sandboxes/createSandbox.ts	Parameter renamed from command to prompt and request body restructured to use a command-based approach with args array containing the run action and prompt value.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• fix: send command instead of prompt to trigger run-sandbox-command #1522: Directly modifies the same createSandbox function signature and JSON request body shape, updating both the parameter name and the command structure sent to the API.

Poem

🏖️ A prompt replaces the command's old way,
Structured args now pave the coding day,
Sandboxes run cleaner, with purpose aligned,
SOLID principles shine through the redesigned. ✨

🚥 Pre-merge checks | ✅ 1

✅ Passed checks (1 passed)

Check name	Status	Explanation
Solid & Clean Code	✅ Passed	The createSandbox function change adheres to SOLID principles and clean code practices with single responsibility, clear naming, proper error handling, and focused implementation.

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch sweetmantech/myc-4162-chat-sandboxes-opencode-run-params

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