Expose full Truthtrance battle-plan and shipment editors

game/battle-claim-expression.ts

@@ -0,0 +1,33 @@
+import type { PlanClaim } from './battle-promises';
+
+// Existing structured battle-question limits, shared with authoring controls.
+export const BATTLE_CLAIM_MAX_NODES = 16;
+export const BATTLE_CLAIM_MAX_DEPTH = 4;
+export const BATTLE_CLAIM_MAX_TERMS = 8;
+export const BATTLE_CLAIM_INPUT_ERROR =
+  'Choose a valid battle-plan condition (at most 16 clauses and four grouping levels).';
+
+export function battleClaimExpressionSize(claim: PlanClaim): { nodes: number; depth: number } {
+  if (claim.kind !== 'and' && claim.kind !== 'or') return { nodes: 1, depth: 0 };
+  const children = claim.terms.map(battleClaimExpressionSize);
+  return { nodes: 1 + children.reduce((sum, child) => sum + child.nodes, 0),
+    depth: 1 + Math.max(0, ...children.map(child => child.depth)) };
+}
+
+/** Structure only; parsePlanClaim still validates every actual leaf. */
+export function battleClaimExpressionError(claim: PlanClaim): string | null {
+  const size = battleClaimExpressionSize(claim);
+  if (size.nodes > BATTLE_CLAIM_MAX_NODES || size.depth > BATTLE_CLAIM_MAX_DEPTH)
+    return BATTLE_CLAIM_INPUT_ERROR;
+  const groupError = (node: PlanClaim): string | null => {
+    if (node.kind !== 'and' && node.kind !== 'or') return null;
+    if (node.terms.length < 2 || node.terms.length > BATTLE_CLAIM_MAX_TERMS)
+      return BATTLE_CLAIM_INPUT_ERROR;
+    for (const term of node.terms) {
+      const error = groupError(term);
+      if (error) return error;
+    }
+    return null;
+  };
+  return groupError(claim);
+}