refactor: outputSchema only accepts inline JSON Schema

- Remove CAS ref string support from workflow YAML outputSchema
- Simplify validate.ts: no string check for outputSchema
- Auto-set title from role name (workflow.role format)

Refs #319

小橘 🍊（NEKO Team）

packages/cli-uwf/src/cli.ts

@@ -15,7 +15,6 @@ import {
   cmdCasCat,
   cmdCasGet,
   cmdCasHas,
-  cmdCasList,
   cmdCasPut,
   cmdCasRefs,
   cmdCasSchemaGet,
@@ -222,14 +221,6 @@ cas
     runAction(() => cmdCasHas(storageRoot, hash));
   });
 
-cas
-  .command("list")
-  .description("List all CAS hashes")
-  .action(() => {
-    const storageRoot = resolveStorageRoot();
-    runAction(() => cmdCasList(storageRoot));
-  });
-
 cas
   .command("refs")
   .description("List direct CAS references from a node")

packages/cli-uwf/src/commands/workflow.ts

@@ -13,7 +13,7 @@ import {
   saveWorkflowRegistry,
   type UwfStore,
 } from "../store.js";
-import { isCasRef, parseWorkflowPayload } from "../validate.js";
+import { parseWorkflowPayload } from "../validate.js";
 
 export type WorkflowListEntry = {
   name: string;
@@ -44,21 +44,16 @@ function isJsonSchema(value: unknown): value is JSONSchema {
 
 async function resolveOutputSchemaRef(
   uwf: UwfStore,
-  outputSchema: string | JSONSchema,
+  roleName: string,
+  outputSchema: unknown,
 ): Promise<CasRef> {
-  if (typeof outputSchema === "string") {
-    if (!isCasRef(outputSchema)) {
-      fail(`invalid outputSchema cas_ref: ${outputSchema}`);
-    }
-    if (!uwf.store.has(outputSchema)) {
-      fail(`outputSchema not found in CAS: ${outputSchema}`);
-    }
-    return outputSchema;
-  }
   if (!isJsonSchema(outputSchema)) {
-    fail("outputSchema must be a cas_ref string or JSON Schema object");
+    fail(`role "${roleName}": outputSchema must be a JSON Schema object`);
   }
-  return putSchema(uwf.store, outputSchema);
+  const schema: JSONSchema = outputSchema.title === undefined
+    ? { ...outputSchema, title: roleName }
+    : outputSchema;
+  return putSchema(uwf.store, schema);
 }
 
 async function materializeWorkflowPayload(
@@ -69,7 +64,8 @@ async function materializeWorkflowPayload(
   for (const [roleName, role] of Object.entries(raw.roles)) {
     const outputSchema = await resolveOutputSchemaRef(
       uwf,
-      role.outputSchema as string | JSONSchema,
+      `${raw.name}.${roleName}`,
+      role.outputSchema,
     );
     roles[roleName] = {
       description: role.description,

packages/cli-uwf/src/validate.ts

@@ -15,9 +15,7 @@ function isRoleDefinition(value: unknown): boolean {
     return false;
   }
   const outputSchema = value.outputSchema;
-  const schemaOk =
-    typeof outputSchema === "string" ||
-    (isRecord(outputSchema) && typeof outputSchema.type === "string");
+  const schemaOk = isRecord(outputSchema) && typeof outputSchema.type === "string";
   return (
     typeof value.description === "string" && typeof value.systemPrompt === "string" && schemaOk
   );

packages/uwf-protocol/src/schemas.ts

@@ -32,6 +32,7 @@ const TRANSITION: JSONSchema = {
 };
 
 export const WORKFLOW_SCHEMA: JSONSchema = {
+  title: "Workflow",
   type: "object",
   required: ["name", "description", "roles", "conditions", "graph"],
   properties: {
@@ -57,6 +58,7 @@ export const WORKFLOW_SCHEMA: JSONSchema = {
 };
 
 export const START_NODE_SCHEMA: JSONSchema = {
+  title: "StartNode",
   type: "object",
   required: ["workflow", "prompt"],
   properties: {
@@ -67,6 +69,7 @@ export const START_NODE_SCHEMA: JSONSchema = {
 };
 
 export const STEP_NODE_SCHEMA: JSONSchema = {
+  title: "StepNode",
   type: "object",
   required: ["start", "prev", "role", "output", "detail", "agent"],
   properties: {