Record deferred upstream Mike classifications

[github-actions]

Automated-Upstream-Mike-Sync: true
Upstream-Risk: none

All 10 upstream PR commits are already ancestors of current ROSS main or are represented by their merged implementation. Per policy, already-implemented items are deferred. The working tree was not modified.

Classified upstream items

• Mike PR feat: prevent users from sharing projects and reviews with themselves Open-Legal-Products/mike#136: defer — Already implemented and subsequently preserved on current main.
• Mike PR fix: update encryption key retrieval to use only USER_API_KEYS_ENCRYPTION_SECRET Open-Legal-Products/mike#137: defer — Already implemented; dedicated USER_API_KEYS_ENCRYPTION_SECRET is enforced.
• Mike PR fix: enforce SUPABASE_URL and SUPABASE_SECRET_KEY presence in server-side client; remove unused supabase-server.ts file Open-Legal-Products/mike#138: defer — Already implemented; Supabase server credentials are required and the obsolete frontend helper is absent.
• Mike PR fix: require dedicated download signing secret Open-Legal-Products/mike#146: defer — Already implemented; download signing requires its dedicated secret.
• Mike PR Update document UI, tabular reviews, and storage caching Open-Legal-Products/mike#148: defer — Already implemented and subsequently evolved on current main.
• Mike PR Add courtlistener intergration, liquid glass redesign, UI improvements, version control, various fixes Open-Legal-Products/mike#171: defer — Oversized metadata-only item, but its upstream implementation commit is already an ancestor of current main.
• Mike PR feat: implement multi-factor authentication (MFA) setup and verification flow and data deletion and export Open-Legal-Products/mike#172: defer — Already implemented and subsequently evolved on current main.
• Mike PR Refactor ProjectPageParts and ProjectPageHeader components Open-Legal-Products/mike#178: defer — Already implemented and subsequently evolved on current main.
• Mike PR Modal, header, mobile display and workflow UI updates Open-Legal-Products/mike#180: defer — Already implemented and subsequently evolved on current main.
• Mike PR refactor: add table primitive and migrations by date; feat: add mcp connectors Open-Legal-Products/mike#183: defer — Bounded patch was omitted, but its upstream implementation commit is already an ancestor of current main.

State-only classification

No safe code adaptation was produced. This PR records the deferred classifications so the queue can continue without reconsidering the same items.