> **Historical provenance document — superseded.** This file preserves an earlier project state. It is not the current scientific interpretation. The canonical v0.3 position is that galaxy-specific structural fingerprints are reproducible and organized; sampling and preparation sensitivity describe how the fingerprints are expressed rather than negating their existence.

# Workflow

```
SPARC source tables
    ↓
neutral baryonic radial profiles
    ↓
observed-only sorted ladders
    ↓
STRUC-I and STRUC-PERC-I
    ↓
consolidated galaxy signatures and full curves
    ↓
unsupervised curve atlas
    ↓
within-galaxy stability versus between-galaxy separability
    ↓
sampling-deconfounded structural taxonomy
    ↓
physical-property and component-origin studies
```

No interpolation is used in the frozen ladders. The same values are supplied to both chambers.

## Current execution gate

```
accepted GAL-FINGERPRINT-I v0.1 protocol
    ↓
Gate A engineering pilot: 100 realizations / 17 STRUC-I batches
    ↓
validate JSON+CSV exports and source-rank calculations
    ↓
Gate B: complete R2–R5 unchanged-ladder repeats
    ↓
continue only if the registered instrument reproducibility gate passes
```

The Gate A runbook is `analysis/gal_fingerprint_i/pilot/PILOT_RUNBOOK.md`.
