fix: log error in resolveEntrypointPath empty catch block

[dapi]

Problem

resolveEntrypointPath in cli.js has an empty catch {} block that silently swallows fs.realpathSync failures. If the file doesn't exist or permissions are wrong, the fallback to path.resolve masks the real issue, making startup failures hard to debug.

function resolveEntrypointPath(filePath) {
  if (!filePath) return null;
  try {
    return fs.realpathSync(filePath);
  } catch {
    return path.resolve(filePath);  // silently masks real errors
  }
}

Proposed Fix

Log the error to stderr before falling back:

catch (error) {
  process.stderr.write(`resolveEntrypointPath: realpathSync failed for ${filePath}: ${error.message}\n`);
  return path.resolve(filePath);
}

Context

Found during PR #18 review by silent-failure-hunter agent.

🤖 Generated with Claude Code