Expose MCP server requiredness through config parsing, inventory reports, config hashes, and degraded startup failure context so orchestrators can distinguish optional degradation from required startup breakage.
Constraint: G007-plugin-mcp Task 3 requires required vs optional MCP behavior and must not mutate .omx/ultragoal.
Rejected: Treating all MCP failures as equivalent | it preserves the existing opacity that prevents required-server failures from being escalated differently.
Confidence: high
Scope-risk: moderate
Directive: Preserve required=false as the backward-compatible default; keep required surfaced in JSON/text inventory and degraded failure context when extending MCP lifecycle states.
Tested: cargo test -p runtime parses_typed_mcp_and_oauth_config -- --nocapture; cargo test -p runtime manager_discovery_report_keeps_healthy_servers_when_one_server_fails -- --nocapture; cargo test -p runtime manager_records_unsupported_non_stdio_servers_without_panicking -- --nocapture; cargo test -p commands renders_mcp_reports -- --nocapture; cargo check --workspace; cargo fmt --all -- --check
Not-tested: cargo clippy -p runtime -p commands -- -D warnings is blocked by pre-existing runtime/src/policy_engine.rs LaneContext clippy::struct_excessive_bools.
Co-authored-by: OmX <omx@oh-my-codex.dev>
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