chore: rename uwf-* → workflow-*, cli-uwf → cli-workflow

Reclaim the workflow-* package names now that legacy packages are archived.

Package renames:
- @uncaged/uwf-protocol → @uncaged/workflow-protocol
- @uncaged/uwf-moderator → @uncaged/workflow-moderator
- @uncaged/uwf-agent-kit → @uncaged/workflow-agent-kit
- @uncaged/uwf-agent-hermes → @uncaged/workflow-agent-hermes
- @uncaged/cli-uwf → @uncaged/cli-workflow

All internal imports, tsconfig references, and docs updated.
CLI binary name 'uwf' unchanged.

小橘 🍊（NEKO Team）

packages/workflow-protocol/src/index.ts

@@ -0,0 +1,36 @@
+export {
+  START_NODE_SCHEMA,
+  STEP_NODE_SCHEMA,
+  WORKFLOW_SCHEMA,
+} from "./schemas.js";
+export type {
+  AgentAlias,
+  AgentConfig,
+  CasRef,
+  ConditionDefinition,
+  ModelAlias,
+  ModelConfig,
+  ModeratorContext,
+  ProviderAlias,
+  ProviderConfig,
+  RoleDefinition,
+  RoleName,
+  Scenario,
+  StartEntry,
+  StartNodePayload,
+  StartOutput,
+  StepContext,
+  StepEntry,
+  StepNodePayload,
+  StepOutput,
+  StepRecord,
+  ThreadForkOutput,
+  ThreadId,
+  ThreadListItem,
+  ThreadStepsOutput,
+  ThreadsIndex,
+  Transition,
+  WorkflowConfig,
+  WorkflowName,
+  WorkflowPayload,
+} from "./types.js";