mcp skill: the served SKILL.md line and its Console mirror do not name validate_expression's variables input (after #33176) #33272

domain:server#7 · sunhaolin · session_017xRBcSZ51q2s3nMfakhdJ3

Follow-up from #33176 (PR #33255, contract review PASS 6879518229). That PR's body carries Skills-docs: follow-up owed — FILES; this card is the owed follow-up. ⛔ Not a claim; triage sets the lane and grade.

What changes with PR #33255: MCP validate_expression gains an optional variables input, accepted only at site: 'flow_condition'. It takes the flow's declared variables, in the shape of FlowVariableSchema. With it, a bare name a variable shares with a field is bound to the variable, and the tool gives the runtime flow door's shadowed-read warning. Without it, the answer is unchanged.

Stale text: two files teach the tool's signature without variables. Both read the same on origin/main 295ce127:

• packages/mcp/src/skill-md.ts ~L410, the SKILL.md the MCP server serves: validate_expression({ objectName, expression, site?, severity?, triggerKind?, sweepObject?, startCondition?, field? }).
• ui/apps/console/src/pages/developer/objectstack-skill.ts ~L134, the Console's mirror of that file.

Expected: both files name variables? in the signature. They also say, in one clause, that the shadowed-read warning and the variable binding of a bare name need it at a flow_condition. Nothing under skills/** describes the flow_condition inputs; I grepped on main.

Serial: after PR #33255 merges. Suggested grade p3 (docs text, MCP focus).

Dedupe: skill-md validate_expression → #30865 (closed, the Console mirror's delete_record confirm), and nothing open.