feat: add VCS workflows and cycle extension

src/index.ts

@@ -13,8 +13,10 @@ export {
   logsWorkflow,
   retryReviewWorkflow,
   retryExecuteWorkflow,
+  extendWorkflow,
   WorkflowEngineError,
   emitWorkflowMeta,
+  resolveVcsSelection,
 } from "./workflow-engine.js";
 
 export type {
@@ -26,6 +28,7 @@ export type {
   LogsWorkflowOpts,
   RetryReviewWorkflowOpts,
   RetryExecuteWorkflowOpts,
+  ExtendWorkflowOpts,
 } from "./workflow-engine.js";
 
 export {
@@ -114,6 +117,7 @@ export type {
   WorkflowStatusArgs,
   WorkflowAbortArgs,
   WorkflowLogsArgs,
+  WorkflowExtendArgs,
 } from "./workflow-args.js";
 
 export type {
@@ -139,6 +143,11 @@ export type {
   ScopeViolation,
   WorkflowEvent,
   WorkflowEventKind,
+  VcsKind,
+  VcsBaseline,
+  VcsBaselineGit,
+  VcsBaselineSvn,
+  ExtensionRecord,
 } from "./workflow-types.js";
 
 export {
@@ -147,6 +156,7 @@ export {
   WORKFLOW_ACTIVE_STATUSES,
   WORKFLOW_TERMINAL_STATUSES,
   HOST_DECISION_OUTCOMES,
+  VCS_KINDS,
 } from "./workflow-types.js";
 
 export {
@@ -160,3 +170,17 @@ export type {
   ChildRunResult,
   StreamProgress,
 } from "./child-process.js";
+
+export {
+  VcsError,
+  GitProvider,
+  SvnProvider,
+  detectVcs,
+  createVcsProvider,
+  extractBaselineHead,
+  findVcsCandidates,
+} from "./vcs-provider.js";
+
+export type {
+  VcsProvider,
+} from "./vcs-provider.js";