# SPDX-License-Identifier: PMPL-1.0-or-later
---
### [META]
id: "source-pillar"
level: 1
parent: "../0-AI-MANIFEST.a2ml"
---
### [AI_MANIFEST]
description: |
Primary source code directory. Organized by role and architectural
aspect.
canonical_locations:
core: "core/"
interface: "interface/"
bridges: "bridges/"
contracts: "contracts/"
errors: "errors/"
definitions: "definitions/"
aspects: "aspects/"
invariants:
- "Core logic MUST reside in core/"
- "Verified seams MUST reside in interface/"
- "Safety constraints MUST reside in contracts/"
- "Failure dictionaries MUST reside in errors/"