feat(hosted-files): introduce direct download mode and automate filename shortening

- Add 'show_direct_download' prop to support native browser downloads via V3 Action paths (/v3/action/...).
- Integrate 'shorten_filename' logic directly into the component via 'max_filename' prop.
- Refactor internal UI to snippets for consistent rendering across button and anchor modes.
- Update 'ae_HostedFile' type with new SQL view fields: 'filename_no_ext' and 'filename_w_ext'.
- Add direct download toggle and edit mode indicator to testing dashboard.
- Simplify 'ae_comp__event_file_obj_tbl' by removing manual snippets in favor of standardized component logic.

src/lib/types/ae_types.ts

@@ -674,6 +674,8 @@ export interface ae_HostedFile extends ae_BaseObj {
     hash_sha256?: string;
     subdirectory_path?: string;
     filename?: string;
+    filename_no_ext?: string;
+    filename_w_ext?: string;
     extension?: string;
     mimetype?: string;
     size?: number;