# Compact Status - 2025-12-07

**Focus**: MCP SDK security fix and spawn serialization documentation

**Key Accomplishments**:
1. Upgraded `@modelcontextprotocol/sdk` 1.19.1 → 1.24.3 (fixes DNS rebinding vulnerability)
2. Updated EVENT_FLOW.md with accurate three-layer spawn protection docs
3. Merged PR #39 to main

**Critical Decisions**:
- SDK 1.24.3 chosen (latest patch, no breaking changes, Zod v3.25+ compatible)
- Documentation references invariants doc instead of line numbers (prevents rot)

**Next Priority Actions**:
1. No blocking items - project in clean state
2. Monitor for SDK upgrade issues
3. Update tech debt issue #31 to mark resolved items

**Critical Issues**:
- None - 0 security vulnerabilities after upgrade

**Key Files Modified**:
- `package.json` - SDK version bump
- `package-lock.json` - Dependency tree
- `docs/architecture/EVENT_FLOW.md` - Spawn serialization docs

**Context Notes**:
Session started with catch-up, found stale background process from previous session. Main work was straightforward SDK upgrade (verified no breaking changes) and documentation accuracy fix. Project health score: 8.5/10 - well-maintained, security-conscious, comprehensive docs.

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*Quick summary of [full status](./../2025-12-07_2146.md)*
