stop printing tests on terminal

Dependencies

• [2] 2NTKHMLG configurable error handler when running tests
• [3] JNJ4R56X support running tests multiple times
• [4] Q7HDVBN7 keep some prints in the terminal for now
• [5] IMEJA43L snapshot
• [6] AVTNUQYR basic test-enabled framework
• [7] FCFJVYKY redundant check
• [8] JOLUCIT6 consistently save/restore state when running tests
• [*] 3QNOKBFM beginnings of a test harness

Change contents

• edit in app.lua at line 401
  [2.113]→[3.18:42](∅→∅),[3.7421]→[3.18:42](∅→∅)
  − print('== run_tests')
• edit in app.lua at line 413
  [3.8041]→[3.43:59](∅→∅)
  − print(name)