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Module VC-08VIBECODE

Build a Dependency-Safe Rollback

VIBECODE • Vibe Coding: AI-First Software Delivery

Browser-only practice

Problem Statement

Stage: Git, Diffs, and Code Review

A release must be reversible without removing dependencies too early.

Deliverable

Reverse topological rollback steps.

Input and output contract

Read change|comma-separated-dependencies records; compute apply order then print it in reverse, or CYCLE.

Acceptance criteria

  1. Remove dependents before dependencies.
  2. Use alphabetical ordering during planning.
  3. Detect cycles.

Suggested vibe loop

Read AGENTS.md, connect your Ollama or OpenAI-compatible provider in the browser, and ask the agent to restate the contract and make one small verifiable change. Watch edits stream into app.py while the editor is locked, then review the result and run the visible example. Keep the checkpoint when the evidence is correct or use Undo to restore it. The browser-client agent does not require an administrator gateway or API key.

Constraints

Use Python 3 standard library only. Read and follow AGENTS.md, keep main.py as the entry point, and implement solve(raw) in app.py.

Sample Testcases

Submit runs every public testcase in this browser. Results and code never leave this device.

Sample #1
Public sample
Input
ui|api
api|schema
schema|
Output
ui
api
schema
Explanation
Rolls back the dependent slice first.

Web terminal

C, C++, Java, and Python run locally in a browser VM. No worker or visualizer is used.

Saved in this browser
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