# h-context Rules

## Directory Structure
- σ state.md — Current state index (<2KB, LLN encoded, mutable)
- θ threads/ — Active workstreams (mutable)
- ε entries/ — Extracted artifacts (append-only)
- ρ raw/ — Source archive (append-only)
- ψ session-log.md — Session history (append-only)

## Mutability
- Δ: σ θ (mutable — update every session)
- ∅: ε ρ (immutable — append only)
- K: rules.md (constant)

## Protocol
1. READ state.md to orient
2. EXECUTE the task
3. UPDATE state.md with current state in LLN
4. APPEND to session-log.md: ψ:round|N|timestamp|"summary"
5. RESPOND to user