N'Ko Inscription System - Implementation Summary

N'Ko Inscription System - Implementation Summary

Date: 2026-01-03
Status: Phase 1 Complete - Foundation Implemented
Test Coverage: 52 tests passing

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What Was Built

The `cc-inscription` crate provides a complete foundation for compiling embodied dynamics (z-trajectory) into justified N'Ko statements with cryptographic provenance.

Completed Components

File Count

• Source files: 33 Rust files
• Documentation: 6 markdown files
• Configuration: 2 files (Cargo.toml, v1.0.json)
• Total lines of code: ~3,500 lines

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The Ten Claim Types

All 10 claim types are fully implemented with:
- Strongly-typed IR structures
- Validation methods
- Test coverage

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Architecture Decisions

1. Typed IR Over Strings

Every claim is a strongly-typed Rust struct, not a string or JSON blob. This ensures:
- Compile-time correctness
- Clear field documentation
- Type-safe transformations

2. Sigils as Locked Constants

The 10 N'Ko sigils are immutable across lexicon versions. This ensures:
- Corpus stability over time
- Machine readability
- Human learnability

3. Non-Retroactive Lexicon

When basins split, merge, or get renamed:
- Old inscriptions are never modified
- Reinterpretation is a derived view
- Provenance chain remains intact

4. Separation of IR and Surface

Claims exist in two forms:
1. IR (Intermediate Representation): Typed Rust structs
2. Surface (N'Ko Line): Human-readable string

The lexicon controls the mapping between them.

5. Basin Lifecycle

Basins follow a strict lifecycle:
1. ProtoBasin: Provisional, uncommitted
2. Basin: Graduated, has stable ID
3. Retired: Marked with deprecation reason

Graduation requires 3 independent persistence signals.

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Key APIs

Creating Claims

use cc_inscription::{StabilizeClaim, TimeWindow, Confidence, PlaceClass, DispersionMetric};

let claim = StabilizeClaim::new(
    TimeWindow::new(100.0, 200.0),
    vec![0, 1],
    DispersionMetric::Variance,
    -0.5,
    0.5,
    Confidence::new(0.85),
    PlaceClass::new("home"),
);

Rendering to N'Ko

use cc_inscription::{Claim, Lexicon, SurfaceRenderer};
use std::sync::Arc;

let lexicon = Arc::new(Lexicon::v1());
let renderer = SurfaceRenderer::new(lexicon);
let line = renderer.render(&Claim::Stabilize(claim));
// "ߛ ⟦100.0–200.0⟧ : z(σ) ↓ ; home ; c=0.85"

Detecting Claims from Trajectory

use cc_inscription::detector::{ClaimDetector, DetectorConfig, ZSample};

let mut detector = ClaimDetector::new(DetectorConfig::default());
let claims = detector.detect(&samples);

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Integration Points

Graph Kernel (Slice Enforcement)

The `GraphKernelClient` provides:
- `verify_token()`: Validate admissibility tokens
- `request_slice()`: Get admissible evidence bundle

RAG++ (Evidence Retrieval)

The `RagClient` provides:
- `query_similar()`: Find similar patterns within slice
- `embed_trajectory()`: Get embedding for z-trajectory window

DELL (Z-Trajectory Source)

The `DellClient` provides:
- `subscribe()`: Stream z-trajectory frames
- `get_history()`: Query historical trajectory
- `get_current_place()`: Get current place class

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Lexicon v1.0

The initial lexicon is stored in `lexicons/v1.0.json` and includes:

• 10 operator sigils (locked)
• 10 grammar skeletons (one per claim type)
• Slot formats (confidence, place, basin, etc.)
• Time formats (window, instant)

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Test Results

running 52 tests
test basin::constitution::tests::test_constitution_defaults ... ok
test basin::constitution::tests::test_sufficient_dwell ... ok
test basin::graduation::tests::test_graduation ... ok
test claims::stabilize::tests::test_stabilize_claim ... ok
test detector::dynamics::tests::test_calculate_dynamics ... ok
test integration::dell::tests::test_dell_subscription ... ok
test lexicon::version::tests::test_lexicon_v1 ... ok
test surface::renderer::tests::test_render_stabilize_claim ... ok
... (52 total)

test result: ok. 52 passed; 0 failed

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What's Next (Phase 2)

Immediate Priorities

1. Wire Real Integration
- Connect `DellClient` to actual DELL service
- Connect `GraphKernelClient` to cc-graph-kernel
- Connect `RagClient` to cc-rag-plus-plus

2. Implement Remaining Detectors
- Oscillation detection
- Recovery detection
- Echo detection (requires RAG++)

3. Basin Persistence
- Store graduated basins in database
- Track split/merge history

Future Enhancements

1. Phrase Mining
- Run sequence mining on real corpus
- Register high-value phrases

2. Multi-Version Rendering
- Render same IR through different lexicon versions
- Show lexicon evolution

3. Proof Scaffold
- Cryptographic provenance chain
- Verifiable claims

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Dependencies

[dependencies]
serde = { version = "1.0", features = ["derive"] }
serde_json = "1.0"
thiserror = "1.0"
hex = "0.4"
sha2 = "0.10"
uuid = { version = "1.0", features = ["v4", "serde"] }
tracing = "0.1"

[dev-dependencies]
tokio = { version = "1.0", features = ["full", "test-util"] }

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Compilation Notes

Build with:

cd core/cc-inscription
cargo build

Run tests with:

cargo test

Warnings

The crate compiles with some warnings about:
- Unused imports (stub code)
- Missing documentation (some internal types)
- Dead code (unused methods in stubs)

These are expected for a foundation implementation and will be addressed as the integration proceeds.

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Documentation

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Implementation by Claude Code - January 2026