v0.7.1

• Fix for #45 Persistent Global Instructions — v0.7.0 saved your global prompt to MMKV but never injected it into any LLM call. The injection helper was wired into AgentConfig.Builder.build() but the runtime construction path is ResolvedModelConfig.toAgentConfig() which uses the data class constructor directly. Verified via in-app logs: zero PromptUtils entries on v0.7.0 even with the prompt set. v0.7.1 also injects in toAgentConfig so the global prompt now reaches every cloud + local LLM call.