TrueLoop maintenance layer

Continuous systems.
A stability contract.

A drop-in layer for component-observable photonic, wave, quantum, RF, sensing, and analog-compute systems.

The product

Keep the dense transform in physics.
Keep correctness explicit.

The controller is one member inside the layer. The product around it decides whether the interface is ready, tracks whether the declared tolerance still holds, contains faults with a verified hold, and records what the deployment actually enforced.

01 / PREFLIGHT

Establish fit.

Your process performs an exact acquisition budget. TrueLoop measures responsiveness and combines it with the evidence registry.

Preflight API
02 / CONTRACT

Maintain state.

Every ordinary full-vector acquisition returns the next configuration plus contract state, health, and any evidence-scoped condition.

Contract API
03 / FAMILY

Route honestly.

The retained member stays active by default. Family guidance is advisory; no counterfactual shadow race and no unsupported automatic switch.

Family policy
04 / ATTESTATION

Keep proof.

An Ed25519-signed record captures state transitions, scalar error history, declared geometry, and version identity without raw vectors or keys.

Signed records
Five states

Legible before it is automatic.

No silent slide from correct to merely running.

01

Unlocked

No ordinary acquisition has been consumed.

02

Identifying

The local response or confirmation window is still being established.

03

Converged

The tolerance held for the complete declared window.

04

Degraded

The contract is not confirmed; correction or a safe hold remains active.

05

Declined

A declared or directly measured condition prevents responsible continuation.

Client 0.5.0

The same loop.
A complete contract.

Existing 0.4.3 clients remain on the frozen legacy path.

PYTHON / DROP-INNO NEW LOOP SHAPE
layer = SWCOptimizer(key, n=len(target), target=target, tolerance=0.05)
x = layer.start(x0)
for _ in range(rounds):
    x = layer.step(measure(x))
proof = layer.end()

layer.state is live during the run. proof is the signed record.

Backward compatibility

Same keys.
No forced migration.

Every active evaluation and paid key keeps its format, term, and entitlement. Client 0.4.3 continues to call the unchanged numerical path. Client 0.5.0 opts into retry safety, contract state, preflight, non-square geometry, declared bounds, and attestation.

Evidence scope

Contract enforcement is a deployment semantic. It is not retroactively labelled as a manuscript experiment.

Selection scope

Advisory by default. Tested members and refuted members remain visibly separate.

Inspect the ledger