The parity gate expansion in 8f9eb0d4 started printing the full
missing-key and placeholder-mismatch lists for every informational
locale on every test run, which was noisy given CI only cares about
strict locales. Collapse info reports to one line per category
(`fr: missing keys vs en: 74`) and keep the full lists available via
VERBOSE_INFO=1 for when someone is actually catching up a locale.
Previously the script only inspected en/zh-CN/zh-TW, leaving de/fr/it/ja/pt-BR
drift invisible. Now locales are auto-discovered from src/i18n/locales/, and a
STRICT list (de, zh-CN, zh-TW — currently in parity) gates CI while the rest
report informationally until their drift is caught up. ja notably has 27 real
placeholder bugs worth fixing before promotion to strict.
maziggy