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Will Pflegerandnpub1mn7jgtj4w2pd0g0zeuhxsa6jy6p0rewxz4kujt98my82ahfmp72sxjexk7
e27200baa2
F1: Effective-merge MCP cap check at agent create/update save time. validate_effective_mcp_cap calls effective_buzz_agent_mcp_servers (the same resolver used at spawn) and rejects when the three-layer merge (global < definition < agent) exceeds MAX_USER_MCP_SERVERS. Prevents a per-layer-valid record from silently breaking at spawn or emptying the WYSIWYG surface. Editor now shows a destructive error whenever effective count exceeds the cap (fires on rename too). 4 Rust unit tests: 15-global+1-local → Err, at-cap → Ok, rename-unmask → Err, non-buzz-agent skip. F2: Complete the client-side Rust mirror — validateMcpServerRow now checks command NUL + ≤32KB; new validateMcpServerArg checks arg NUL + ≤32KB with inline subrow errors; new validateMcpServerListPayload checks aggregate total payload ≤256KB (name+command+args+env bytes across all servers) with editor-level error. Adds MAX_ENV_TOTAL_BYTES constant. 9 unit tests: command NUL/oversize/at-limit, arg NUL/oversize /valid, payload under/over/at-limit. check-file-sizes.mjs: agent_models.rs override bumped 1079→1082 (+3 lines for the effective-cap block).