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Sefi: Current Status

Date: 2025-10-03
Phase: Phase 1 - Minimal Loop
Version: v0.3 (N-D Primary)

Foundation Complete ✅

Implemented

  • ✅ types.rs - Complete v0.3 schema with Tempo, PreCard, BasinFeedback
  • ✅ ledger/store.rs - In-memory ledger with tests passing
  • ✅ CLI stub - Command parsing works (emit, status)
  • ✅ Project structure - All modules stubbed

Completed (M1.1)

  • ✅ embed/mod.rs - Mock embedding service (SHA256-based, 768d)
  • ✅ clustering/mod.rs - Streaming clustering with two-tempo decay
  • ✅ Medoid computation - Real concept anchors (not centroids)
  • ✅ Cohesion metric - Average pairwise similarity

In Progress

  • ⏳ clustering (M1.2) - Upgrade to DBSCAN-lite
  • ⏳ validator (M1.2) - Basin validator wrapper
  • ⏳ feedback (M1.3) - PreCard generation
  • ⏳ CLI wiring (M1.4) - Integration with engine
  • ⏳ Engine (M1.4) - Main loop integration

Architecture Decisions (v0.3)

Key Choices from Guest Critique:

  1. ✅ N-D Primary: All semantic work happens in N-D space
  2. ✅ Two-tempo decay: Fast/Slow/Urgent for different signal types
  3. ✅ Tiered synthesis: Template (instant) → Light → Heavy
  4. ✅ Medoid not centroid: Real concepts, not phantoms
  5. ✅ 2D deferred: Visualization will be Phase 2 (monitor only)

Architect Approval: Foundation reviewed and approved ✅

Build Plan

See BUILD_PLAN.md for detailed milestones.

Milestones:

  • M1.1: Embedding + clustering + two-tempo decay (✅ Complete)
  • M1.2: Upgrade to DBSCAN-lite + validator
  • M1.3: Feedback emitter (PreCard templates)
  • M1.4: Wire up CLI + engine integration
  • M1.5: Integration tests + demo script

Builder: Claude Code Status: M1.1 complete, ready for M1.2

Phase 1 Success Criteria

Minimal Loop Demo:

sefi emit "memory safety" --amp 0.9 --tempo slow
sefi emit "rust borrow checker" --amp 0.8 --tempo slow
sefi emit "zero cost abstractions" --amp 0.7 --tempo slow
sefi status
# → Shows 1 valley basin with medoid "memory safety"
# → PreCard template printed with top phrases

Tests Passing:

  • Unit tests for clustering, validator, feedback
  • Integration test for complete loop
  • CLI demo script works

Next Steps

For Claude Code (Builder):

  1. Read BUILD_PLAN.md
  2. Implement M1.1 (clustering) with tests
  3. Commit when tests pass
  4. Move to M1.2
  5. Report back to architect when M1.5 complete

For Architect (Me):

  • Review code when milestones complete
  • Answer builder questions
  • Sign off on Phase 1 before Phase 2

Philosophy Check ✅

Boutique Principles:

  • ✅ Minimal dependencies (7 crates)
  • ✅ No frameworks
  • ✅ Surgical implementations
  • ✅ Every line understood
  • ✅ Think twice, code once

v0.3 Principles:

  • ✅ N-D is truth
  • ✅ Tempo-aware decay
  • ✅ Medoid not centroid
  • ✅ Template feedback (instant)
  • ✅ Simple before complex

Status: 🏗️ M1.1 COMPLETE - READY FOR M1.2 Next: Upgrade to DBSCAN-lite clustering

M1.1: Embedding + clustering + two-tempo decay ✅ Complete. 💎