Function cleanupLegacyWindowsState

src/installer/targets/opencode.ts:263–275

* Remove whatever a pre-#535 install left in `%APPDATA%/opencode` — an MCP * entry opencode never reads, plus our marker-fenced AGENTS.md block. Returns * only files actually changed, so install output stays quiet when there is * nothing to heal. Never touches anything else in the legacy dir: a u

()

 * genuinely keep other tools' state under %APPDATA%.
 */
function cleanupLegacyWindowsState(): WriteResult['files'] {
  const dir = legacyWindowsConfigDir();
  if (!dir || !fs.existsSync(dir)) return [];
  const out: WriteResult['files'] = [];
  for (const name of ['opencode.jsonc', 'opencode.json']) {
    const res = removeMcpEntryAt(path.join(dir, name));
    if (res.action === 'removed') out.push(res);
  }
  const agents = path.join(dir, 'AGENTS.md');
  const action = removeMarkedSection(agents, CODEGRAPH_SECTION_START, CODEGRAPH_SECTION_END);
  if (action === 'removed') out.push({ path: agents, action });
  return out;
}

/**
 * Strip the marker-delimited CodeGraph block from AGENTS.md if a prior