Improve an Existing Agentic Pipeline (HLD)

Design Problem: Propose improvements to an existing agentic LLM pipeline (HLD-style discussion). Requirements: Identify bottlenecks/weaknesses in a given agentic pipeline (e.g. tool-calling reliability, latency, context management, error recovery, observability) and propose concrete architectural improvements. Design: Cover areas such as adding a planning/orchestration layer, better memory/context management across steps, retries and fallback strategies for tool failures, caching of intermediate results, guardrails/validation between agent steps, and monitoring/tracing for debuggability at scale.