feat: allow control over displaying hidden/dotfiles and .gitignore matches (#179)

* feat: add chat setting to toggle hidden files (dotfiles)

* feat: add toggle to show/hide gitignored files in file browser

* refactor: don't reuse visibility setting for dotfiles toggle

* fix: honor hidden/gitignored toggles across runtimes

---------

Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>

packages/ui/src/lib/api/types.ts

@@ -322,6 +322,8 @@ export interface FileSearchQuery {
   directory: string;
   query: string;
   maxResults?: number;
+  includeHidden?: boolean;
+  respectGitignore?: boolean;
 }
 
 export interface FileSearchResult {
@@ -576,4 +578,3 @@ export interface SkillsInstallResponse {
   skipped?: Array<{ skillName: string; reason: string }>;
   error?: SkillsInstallError;
 }
-