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openspec/changes/define-platform-foundation/specs/control-plane-core/spec.md

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+## ADDED Requirements
+
+### Requirement: aiNAS control plane as product system of record
+The system SHALL define an aiNAS-owned control plane as the authoritative home for product-level domain concepts.
+
+#### Scenario: Product semantics require persistence
+- **WHEN** aiNAS needs to represent devices, workspaces, storage sources, shares, mount profiles, policies, or audit history
+- **THEN** the planning artifacts MUST place those concepts inside the aiNAS control-plane domain model
+
+### Requirement: High-level domain contracts
+The platform SHALL define a first high-level contract map for core entities and API categories before implementation proceeds.
+
+#### Scenario: Future implementation work needs a stable conceptual frame
+- **WHEN** engineers start implementing the control plane
+- **THEN** the planning artifacts MUST already identify the first core entities and the first API categories those entities imply
+
+### Requirement: Standalone service posture
+The control plane SHALL remain architecturally standalone even if it is temporarily packaged or surfaced through Nextcloud-compatible mechanisms.
+
+#### Scenario: aiNAS backend is consumed by multiple surfaces
+- **WHEN** a standalone web app, Nextcloud shell, or future device client needs backend behavior
+- **THEN** the design MUST treat the control plane as a reusable aiNAS service rather than as logic conceptually trapped inside the Nextcloud app model
+
+### Requirement: Single modular backend first
+The platform SHALL prefer one modular backend service before splitting the control plane into multiple distributed services.
+
+#### Scenario: Engineers plan service topology
+- **WHEN** the first real control-plane backend is planned
+- **THEN** the default architecture MUST be one service with explicit internal modules rather than many microservices