Function writePromptHookEntry

src/installer/targets/claude.ts:429–470

(loc: Location)

 * only calls this when the user accepts the prompt (default-yes).
 */
export function writePromptHookEntry(loc: Location): WriteResult['files'][number] {
  const file = settingsJsonPath(loc);
  const created = !fs.existsSync(file);
  const settings = readJsonFile(file);

  if (!settings.hooks || typeof settings.hooks !== 'object' || Array.isArray(settings.hooks)) {
    settings.hooks = {};
  }
  if (!Array.isArray(settings.hooks.UserPromptSubmit)) settings.hooks.UserPromptSubmit = [];

  // Self-heal (#1466): a pre-fix install on Windows wrote the bare
  // `codegraph prompt-hook`, which Git Bash resolves to nothing; a
  // settings.json carried across platforms can hold the other spelling too.
  // Rewrite an installer-written command to this platform's form in place.
  // Only the exact installer spellings migrate — an `npx …` or hand-edited
  // variant is the user's own and stays untouched.
  let migrated = false;
  for (const group of settings.hooks.UserPromptSubmit) {
    if (!group || !Array.isArray(group.hooks)) continue;
    for (const h of group.hooks) {
      if (h && PROMPT_HOOK_FORMS.includes(h.command) && h.command !== PROMPT_HOOK_COMMAND) {
        h.command = PROMPT_HOOK_COMMAND;
        migrated = true;
      }
    }
  }

  const already = settings.hooks.UserPromptSubmit.some(
    (g: any) => g && Array.isArray(g.hooks) && g.hooks.some((h: any) => isPromptHookCommand(h?.command)),
  );
  if (already) {
    if (!migrated) return { path: file, action: 'unchanged' };
    writeJsonFile(file, settings);
    return { path: file, action: 'updated' };
  }

  settings.hooks.UserPromptSubmit.push({
    hooks: [{ type: 'command', command: PROMPT_HOOK_COMMAND }],
  });
  writeJsonFile(file, settings);
  return { path: file, action: created ? 'created' : 'updated' };
}

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