- Implement tests for the ImageProcessingWorker to validate task deduplication and policy interactions.
- Create tests for operation policy to ensure proper grant handling and error responses.
- Add tests for reverse image provider response structure to validate empty and malformed results.
- Develop comprehensive tests for scope resolution and service validation to ensure correct behavior in various scenarios.
Replace directory-scoped image APIs with flat PostgreSQL-backed storage and stable meme_id resource contracts. Remove directory endpoints, sidecar assumptions, and path-based media access while preserving task, upload, rename, delete, repair, and search workflows. Archive the image ingestion and library OpenSpec change with migration and contract coverage.
将按目录组织的图片接口替换为基于 PostgreSQL 的扁平存储和稳定 meme_id 资源契约。删除目录接口、sidecar 假设和路径媒体访问，同时保留任务、上传、重命名、删除、修复与检索流程。归档图片摄取与图片库 OpenSpec，并补充迁移和契约测试。
BREAKING CHANGE: image and context APIs now require stable meme_id values; directory-based endpoints and path media URLs are removed.
破坏性变更：图片和语境接口现在要求稳定 meme_id，目录接口与路径媒体 URL 已移除。
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