Standardize Exhibit Leads module: Rich text support and naming alignment

- Integrated TipTap rich text editor for Booth Descriptions and Exhibitor Notes.
- Implemented strip_html utility for clean search/preview of rich text fields.
- Renamed exhibit loading functions to follow load_ae_obj_id__event_exhibit* pattern.
- Hardened property processors with 'undefined' string guards and automatic reload triggers.
- Resolved type mismatches and naming inconsistencies across the Leads module.
- Verified zero-error state via svelte-check.

src/routes/events/[event_id]/(leads)/README.md

@@ -48,11 +48,11 @@ Represents a single lead captured by an exhibitor. It links an exhibitor to an a
 
 - `/events/[event_id]/(leads)`: The main entry point for the Leads module within a specific event, typically displays a list of available exhibits.
     - `+page.svelte`: Renders the list of exhibits.
-    - `+page.ts`: Loads the data for available exhibits using `events_func.load_ae_obj_li__exhibit`.
+    - `+page.ts`: Loads the data for available exhibits using `events_func.load_ae_obj_li__event_exhibit`.
     - `+layout.svelte`/`+layout.ts`: Provides a common layout and data for the module, including a submenu.
 - `/events/[event_id]/(leads)/exhibit/[slug]`: Dynamic route for managing leads for a specific exhibitor within an event. The `[slug]` corresponds to `event_exhibit_id`.
     - `+page.svelte`: The primary interface for an exhibitor, orchestrating lead capture and management components.
-    - `+page.ts`: Loads specific `Exhibit` data and associated `Exhibit_tracking` (leads) using `events_func.load_ae_obj_id__exhibit` and `events_func.load_ae_obj_li__exhibit_tracking`.
+    - `+page.ts`: Loads specific `Exhibit` data and associated `Exhibit_tracking` (leads) using `events_func.load_ae_obj_id__event_exhibit` and `events_func.load_ae_obj_li__event_exhibit_tracking`.
 
 ### Core Components (within `src/routes/events/[event_id]/(leads)/exhibit/[slug]/`)