feat: finish xai provider integration

src/plugin-sdk/provider-tools.ts

@@ -0,0 +1,56 @@
+// Shared provider-tool helpers for plugin-owned schema compatibility rewrites.
+
+export const XAI_UNSUPPORTED_SCHEMA_KEYWORDS = new Set([
+  "minLength",
+  "maxLength",
+  "minItems",
+  "maxItems",
+  "minContains",
+  "maxContains",
+]);
+
+export function stripUnsupportedSchemaKeywords(
+  schema: unknown,
+  unsupportedKeywords: ReadonlySet<string>,
+): unknown {
+  if (!schema || typeof schema !== "object") {
+    return schema;
+  }
+  if (Array.isArray(schema)) {
+    return schema.map((entry) => stripUnsupportedSchemaKeywords(entry, unsupportedKeywords));
+  }
+  const obj = schema as Record<string, unknown>;
+  const cleaned: Record<string, unknown> = {};
+  for (const [key, value] of Object.entries(obj)) {
+    if (unsupportedKeywords.has(key)) {
+      continue;
+    }
+    if (key === "properties" && value && typeof value === "object" && !Array.isArray(value)) {
+      cleaned[key] = Object.fromEntries(
+        Object.entries(value as Record<string, unknown>).map(([childKey, childValue]) => [
+          childKey,
+          stripUnsupportedSchemaKeywords(childValue, unsupportedKeywords),
+        ]),
+      );
+      continue;
+    }
+    if (key === "items" && value && typeof value === "object") {
+      cleaned[key] = Array.isArray(value)
+        ? value.map((entry) => stripUnsupportedSchemaKeywords(entry, unsupportedKeywords))
+        : stripUnsupportedSchemaKeywords(value, unsupportedKeywords);
+      continue;
+    }
+    if ((key === "anyOf" || key === "oneOf" || key === "allOf") && Array.isArray(value)) {
+      cleaned[key] = value.map((entry) =>
+        stripUnsupportedSchemaKeywords(entry, unsupportedKeywords),
+      );
+      continue;
+    }
+    cleaned[key] = value;
+  }
+  return cleaned;
+}
+
+export function stripXaiUnsupportedKeywords(schema: unknown): unknown {
+  return stripUnsupportedSchemaKeywords(schema, XAI_UNSUPPORTED_SCHEMA_KEYWORDS);
+}