Remove electron dependency from browser build by using platform-agnostic dialog types (#982)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: thomasnordquist <7721625+thomasnordquist@users.noreply.github.com>

events/DialogTypes.ts

@@ -0,0 +1,59 @@
+/**
+ * Browser-compatible dialog type definitions
+ * These types mirror Electron's dialog types but don't require the electron package
+ */
+
+export interface FileFilter {
+  name: string
+  extensions: string[]
+}
+
+export interface OpenDialogOptions {
+  title?: string
+  defaultPath?: string
+  buttonLabel?: string
+  filters?: FileFilter[]
+  properties?: Array<
+    | 'openFile'
+    | 'openDirectory'
+    | 'multiSelections'
+    | 'showHiddenFiles'
+    | 'createDirectory'
+    | 'promptToCreate'
+    | 'noResolveAliases'
+    | 'treatPackageAsDirectory'
+    | 'dontAddToRecent'
+  >
+  message?: string
+  securityScopedBookmarks?: boolean
+}
+
+export interface OpenDialogReturnValue {
+  canceled: boolean
+  filePaths: string[]
+  bookmarks?: string[]
+}
+
+export interface SaveDialogOptions {
+  title?: string
+  defaultPath?: string
+  buttonLabel?: string
+  filters?: FileFilter[]
+  message?: string
+  nameFieldLabel?: string
+  showsTagField?: boolean
+  properties?: Array<
+    | 'showHiddenFiles'
+    | 'createDirectory'
+    | 'treatPackageAsDirectory'
+    | 'showOverwriteConfirmation'
+    | 'dontAddToRecent'
+  >
+  securityScopedBookmarks?: boolean
+}
+
+export interface SaveDialogReturnValue {
+  canceled: boolean
+  filePath?: string
+  bookmark?: string
+}