[DOC] Deep walkthrough: Durable agent workflows with LangGraph + Chroma

[tazarov]

Why

Users need durable, multi-step agent workflows, not just isolated retrieval snippets. Chroma should be shown as long-term state across sessions.

Proposal

Create a deep walkthrough for LangGraph-based agents using Chroma as long-term memory.

Scope

• Use LangGraph workflow/state model with Chroma memory integration.
• Persist and replay cross-session context.
• Demonstrate interruption/restart recovery.
• Show how tool outputs are summarized and stored as retrievable memory.

Deliverables

• Runnable LangGraph example.
• Walkthrough with graph/state explanation and debugging workflow.
• Example of failure handling and recovery.

Acceptance Criteria

• Workflow can be resumed without losing relevant context.
• Memory retrieval affects downstream node decisions.
• The guide includes clear inspection/debugging steps for graph state and memory records.