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Round Log

V2 Project 20: ouroboros-rs

  • Original: ouroboros (Python, 1.9K stars)
  • Reimplemented as: ouroboros-rs (Rust)
  • Date: 2026-04-04
  • Phase: Build complete, pending evaluation

Scope

Core features reimplemented:

  1. Socratic Interview Engine with multi-perspective panel and ambiguity scoring
  2. Seed Crystallization with immutable ontology schema
  3. Double Diamond Execution with AC decomposition and topological sort
  4. 3-Stage Evaluation Pipeline (Mechanical, Semantic, Consensus)
  5. Evolutionary Loop with convergence detection (stagnation, oscillation, gates)

Metrics

  • Test count: 199
  • Source files: 20 Rust source files
  • Modules: 9 (config, llm, seed, interview, execution, evaluation, evolution, lineage, persistence)
  • Dependencies: 9 (serde, serde_json, rusqlite, clap, uuid, chrono, async-trait, tokio, thiserror)

Key Design Decisions

  • LlmAdapter async trait with MockLlmAdapter for testing
  • Typed event enums (18 variants) instead of Python's dict[str, Any]
  • OntologyDelta weighted similarity: name 0.5, type 0.3, exact 0.2
  • Kahn's algorithm for topological execution ordering
  • rusqlite for event persistence with session-based storage
  • Heuristic fallbacks for Wonder and Reflect when LLM unavailable