- Slim Entry.cs from ~550 to ~330 lines (thin dispatcher only)
- Extract HtmlSanitizer, CommandLogger, EntryFileService from Entry.cs
- Extract PythonSidecarClient from duplicated sidecar plumbing
- Add IEntryFileRepository + DiskEntryFileRepository (mirrors Fragment pattern)
- Move payload records to Dtos/CommandDtos.cs
- Move database result records to Dtos/DatabaseDtos.cs
- Register new services and repository in DI
- All 70/70 smoke tests pass, no behavior changes
Co-Authored-By: Warp <agent@warp.dev>
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