Llama 4 Knowledge Cutoff: Add Live Context

Meta's Llama 4 system prompt documentation notes a pre-training cutoff date of August 2024. Declare the August 2024 cutoff in the system prompt and require the model to ground post-cutoff 2026 financial analysis in user-supplied context.

<|begin_of_text|><|header_start|>system<|header_end|> Your knowledge cutoff is August 2024. For all 2025–2026 financial metrics, rely strictly on the documents provided by the user.<|eot|>