docs: update all documentation for status-based routing (#497)

Replace all JSONata/ConditionDefinition/ConditionalEdge references with
status-based routing terminology across 8 files:

- README.md, CLAUDE.md: moderator description, key terms
- docs/architecture.md: dependency jsonata→mustache, evaluate signature
- docs/wf-stateless-design.md: type definitions, routing context
- packages/workflow-moderator/README.md: full rewrite for new API
- packages/workflow-protocol/README.md: Target type, remove Transition
- packages/workflow-dashboard/context.md: StatusEdge, graph type
- docs/builtin-agent-research.md: stale JSONata references

packages/workflow-dashboard/context.md

@@ -123,7 +123,7 @@ type RoleNodeData = {
 
 **边类型**：
 - `default`（GradientEdge）→ 渐变色边（绿→蓝），节点仅有一条出边时使用
-- `conditional`（ConditionalEdge）→ 带条件标签的渐变色边，节点有多条出边时使用
+- `status`（StatusEdge）→ 带 status 标签的渐变色边，节点有多条出边时使用
 
 **边渲染特性**：
 - 渐变色：SVG linearGradient，从 source 端绿色（#10b981）到 target 端蓝色（#3b82f6）
@@ -234,7 +234,7 @@ Model 提供事务机制：
 ```
 ReactFlow
   ├─ nodeTypes: { start: NodeStart, end: NodeEnd, role: NodeRole }
-  └─ edgeTypes: { default: GradientEdge, conditional: ConditionalEdge }
+  └─ edgeTypes: { default: GradientEdge, status: StatusEdge }
 ```
 
 `NodeRole` 显示角色名（data.name），使用 teal 色系图标和标签。Handle 分蓝色（in）和绿色（out）两种颜色。
@@ -324,12 +324,11 @@ type WorkflowPayload = {
   name: string;
   description: string;
   roles: Record<string, RoleDefinition>;       // 角色定义（4 段式：identity/prepare/execute/report）
-  conditions: Record<string, ConditionDefinition>; // JSONata 条件表达式
-  graph: Record<string, Transition[]>;          // 角色间的转移图
+  graph: Record<string, Record<string, Target>>;   // status-based 路由图
 };
 ```
 
-workflow-dashboard 使用 `WorkFlowSteps` 格式作为交换数据，其中 `WorkFlowRole` 的字段与 `RoleDefinition` 对齐（description/identity/prepare/execute/report），`WorkFlowTransition` 对应 graph 中的 `Transition`。外部（CLI/server）负责 `WorkflowPayload` ↔ `WorkFlowSteps` 的转换。
+workflow-dashboard 使用 `WorkFlowSteps` 格式作为交换数据，其中 `WorkFlowRole` 的字段与 `RoleDefinition` 对齐（description/identity/prepare/execute/report），`WorkFlowTransition` 对应 graph 中的 `Target`。外部（CLI/server）负责 `WorkflowPayload` ↔ `WorkFlowSteps` 的转换。
 
 ## 11. 当前状态与待完善项
 

packages/workflow-moderator/README.md

@@ -1,12 +1,12 @@
 # @uncaged/workflow-moderator
 
-JSONata-based graph evaluator — determines the next role or `$END` with zero LLM cost.
+Status-based graph evaluator — determines the next role or `$END` with zero LLM cost.
 
 ## Overview
 
-The moderator (Layer 1) walks the workflow graph from the current role. For each outgoing transition it evaluates an optional JSONata condition against `ModeratorContext` (start prompt + prior step outputs). The first truthy transition wins; its target role and edge prompt are returned. When no transition matches, the workflow ends (`$END`).
+The moderator (Layer 1) performs a status-based map lookup on the workflow graph. Given the last role and its output, it looks up `graph[lastRole][lastOutput.status]` to find the next `Target` (role + prompt template). The prompt is rendered via Mustache with `lastOutput` as the template context. For `$START`, the unit status `_` is used.
 
-**Dependencies:** `@uncaged/workflow-protocol`, `jsonata`
+**Dependencies:** `@uncaged/workflow-protocol`, `mustache`
 
 ## Installation
 
@@ -20,12 +20,13 @@ bun add @uncaged/workflow-moderator
 
 ```typescript
 function evaluate(
-  workflow: WorkflowPayload,
-  context: ModeratorContext,
-): Promise<Result<EvaluateResult, Error>>
+  graph: Record<string, Record<string, Target>>,
+  lastRole: string,
+  lastOutput: Record<string, unknown> & { status: string },
+): Result<EvaluateResult, Error>
 ```
 
-Returns `{ ok: true, value: { role, prompt } }` where `role` is the next role name or `"$END"`, and `prompt` is the edge instruction for the agent.
+Returns `{ ok: true, value: { role, prompt } }` where `role` is the next role name or `"$END"`, and `prompt` is the rendered edge instruction for the agent.
 
 ### Types
 
@@ -42,9 +43,9 @@ The `Result<T, E>` type is local to this package (`{ ok: true; value: T } | { ok
 
 ```typescript
 import { evaluate } from "@uncaged/workflow-moderator";
-import type { ModeratorContext, WorkflowPayload } from "@uncaged/workflow-protocol";
+import type { Target } from "@uncaged/workflow-protocol";
 
-const result = await evaluate(workflow, context);
+const result = evaluate(graph, lastRole, lastOutput);
 if (result.ok && result.value.role !== "$END") {
   console.log(`Next role: ${result.value.role}, prompt: ${result.value.prompt}`);
 }
@@ -55,6 +56,6 @@ if (result.ok && result.value.role !== "$END") {
 ```
 src/
 ├── index.ts      Public exports
-├── evaluate.ts   Graph walk + JSONata condition evaluation
+├── evaluate.ts   Status-based map lookup + Mustache prompt rendering
 └── types.ts      EvaluateResult, Result
 ```

packages/workflow-protocol/README.md

@@ -47,23 +47,16 @@ type RoleDefinition = {
   frontmatter: CasRef;
 };
 
-type Transition = {
+type Target = {
   role: string;
-  condition: string | null;
   prompt: string;
 };
 
-type ConditionDefinition = {
-  description: string;
-  expression: string;
-};
-
 type WorkflowPayload = {
   name: string;
   description: string;
   roles: Record<string, RoleDefinition>;
-  conditions: Record<string, ConditionDefinition>;
-  graph: Record<string, Transition[]>;
+  graph: Record<string, Record<string, Target>>;
 };
 ```