- Move ImapProvider, ExchangeInboxProvider, InboxProvider into apps/api/src/inbox/
- Move InboxConfig/InboxAttachment/InboxEmail into new inbox.types.ts
- dkv.types.ts re-exports the moved types so existing DKV imports keep compiling
- DKV switches import paths to ../inbox/... and imports InboxModule
- Pure move + import-path swap: fetchPdfAttachments and all DKV logic unchanged (D-01/D-02)
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
