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browser/openspec/changes/rebuild-scum-plugin-owned-data/design.md
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# Design
## Ownership
Platform owns authentication, server-instance authorization, durable storage mechanics, collection scoping, and transaction boundaries. It does not interpret collection payloads.
The SCUM plugin owns collection names such as `scum_users`, schemas, upsert keys, data transformations, gifts, map geometry, and UI behavior. It declares database/file/log work in the manifest; Platform dispatches those declarations to Run, and Run executes on the machine.
## Generic Platform Data Contract
The generic record is scoped by `pluginId`, `serverInstanceId`, `collection`, and `key`, with an opaque JSON `value` and timestamps. The platform validates scope and authorization only. A page bridge exposes list/get/put/delete generic collection methods to plugin bundles.
## SCUM Data Flow
1. The plugin declares v57 SQLite queries plus config/log parsers in its own versioned assets.
2. Platform dispatches the selected declared operation to Run; no browser or plugin supplies a machine path or SQL string at request time.
3. Plugin-shaped results are stored in scoped `scum_*` collections through the generic store.
4. The SCUM page reads those collections through the generic bridge and applies all SCUM-specific presentation and gift logic locally.
## Compatibility
Recent SCUM-specific Platform routes, types, repository tables, and game-gift APIs are removed. The retained generic bridge remains usable by other game plugins without SCUM imports or switches.