Produce a professional report evaluating Rust + Actix as a tech stack for a task management app in the digital-banking industry. Use a {{tone}} tone appropriate for {{target_audience}}. Break down each technology's role, maturity, learning curve, and maintenance outlook. List 5 advantages and 5 weaknesses. Compare against 2 alternative stacks rating development speed, performance, complexity, cost, and community on a 1-5 scale. Provide a text-based architecture diagram, hosting approach, and cost estimates at 3 scale points. Summarize go/no-go criteria and a final recommendation with confidence level. Structure as: Executive Summary, Key Findings, Detailed Analysis, Recommendations, and Next Steps. Maximum 1200 words. Skip any section if information is unknown. Paste any relevant background information after these instructions before running.