Two-Direction Index

Kind: mechanism

Layer: Execution Core

Record: architecture:two-direction-index

Severity: mandatory

Scope: index, directory

Canonical: Ontology

A mechanism that generates an index from the directory on every run and checks it both ways, reporting an entry with no file and a file with no entry, with every scan independent of depth.

Listed in Architecture principles, after Projection Channel and before Independent Lifetime Axes.

Requires

• Coordination Surface

Reinforces

• Single Source of Truth

Enables

• Traceable Guarantee

Conflicts with

• Hand-Kept Index

Violated by

• Hand-Kept Index
• One-Way Index Check

Refactored by

• Generate the Index from the Directory
• Check Both Directions

Severity

• mandatory

Category

• Coordination Surfaces

Linked from

• Schema / Canonical Data / Semantics
• Coordination Surfaces
• Coordination Surfaces
• Severity levels

in this codebase

• models/coordination.model.md