feat(ui): add export and import features functionality

- Introduced new routes for exporting and importing features, enhancing project management capabilities.
- Added UI components for export and import dialogs, allowing users to easily manage feature data.
- Updated HTTP API client to support export and import operations with appropriate options and responses.
- Enhanced board view with controls for triggering export and import actions, improving user experience.
- Defined new types for feature export and import, ensuring type safety and clarity in data handling.

libs/types/src/feature.ts

@@ -71,3 +71,58 @@ export interface Feature {
 }
 
 export type FeatureStatus = 'pending' | 'running' | 'completed' | 'failed' | 'verified';
+
+/**
+ * Export format for a feature, used when exporting features to share or backup
+ */
+export interface FeatureExport {
+  /** Export format version for compatibility checking */
+  version: string;
+  /** The feature data being exported */
+  feature: Feature;
+  /** ISO date string when the export was created */
+  exportedAt: string;
+  /** Optional identifier of who/what performed the export */
+  exportedBy?: string;
+  /** Additional metadata about the export context */
+  metadata?: {
+    projectName?: string;
+    projectPath?: string;
+    branch?: string;
+    [key: string]: unknown;
+  };
+}
+
+/**
+ * Options for importing a feature
+ */
+export interface FeatureImport {
+  /** The feature data to import (can be raw Feature or wrapped FeatureExport) */
+  data: Feature | FeatureExport;
+  /** Whether to overwrite an existing feature with the same ID */
+  overwrite?: boolean;
+  /** Whether to preserve the original branchName or ignore it */
+  preserveBranchInfo?: boolean;
+  /** Optional new ID to assign (if not provided, uses the feature's existing ID) */
+  newId?: string;
+  /** Optional new category to assign */
+  targetCategory?: string;
+}
+
+/**
+ * Result of a feature import operation
+ */
+export interface FeatureImportResult {
+  /** Whether the import was successful */
+  success: boolean;
+  /** The ID of the imported feature */
+  featureId?: string;
+  /** ISO date string when the import was completed */
+  importedAt: string;
+  /** Non-fatal warnings encountered during import */
+  warnings?: string[];
+  /** Errors that caused import failure */
+  errors?: string[];
+  /** Whether an existing feature was overwritten */
+  wasOverwritten?: boolean;
+}

libs/types/src/index.ts

@@ -58,6 +58,9 @@ export type {
   FeatureTextFilePath,
   FeatureStatus,
   DescriptionHistoryEntry,
+  FeatureExport,
+  FeatureImport,
+  FeatureImportResult,
 } from './feature.js';
 
 // Session types