WrenbyAI 0.2.4

Per-mode limits: Spark 16k context and 128k tokens a day, Turbo 64k and 200k, Forge 128k and 655k, Zenith 200k and 800k. Older messages are trimmed to fit a mode's context. Token usage per mode now shows in Settings → Usage, with a clear message when a mode's daily limit is reached (resets at midnight UTC).