fix(modmail): button custom_id mismatch causing interaction timeout

- PersistentQuickOpen expects custom_id='modmail_quick_open'
- Panel button had custom_id='modmail_quick_open:{key}' (mismatch)
- Discord couldn't find the handler -> 3s timeout
- Added error logging on CategorySelect callback

commandes/modmail.py

@@ -1,4 +1,5 @@
 import contextlib
+import logging
 
 import discord
 from discord import app_commands
@@ -27,26 +28,31 @@ class CategorySelect(discord.ui.Select):
         )
 
     async def callback(self, interaction: discord.Interaction):
-        category_key = self.values[0]
-        categories = cfg.get_categories()
-        cat = categories.get(category_key, {})
-        data = cfg.get_config()
-        guild = interaction.client.get_guild(data.get("guild_id"))
-        if not guild:
-            await interaction.response.send_message("Erreur: serveur introuvable.", ephemeral=True)
-            return
+        try:
+            category_key = self.values[0]
+            categories = cfg.get_categories()
+            cat = categories.get(category_key, {})
+            data = cfg.get_config()
+            guild = interaction.client.get_guild(data.get("guild_id"))
+            if not guild:
+                await interaction.response.send_message("Erreur: serveur introuvable.", ephemeral=True)
+                return
 
-        user = interaction.user
-        existing = cfg.get_ticket_by_user(user.id)
-        if existing:
-            ch = guild.get_channel(existing["channel_id"])
-            await interaction.response.send_message(
-                f"Tu as deja un ticket ouvert: {ch.mention if ch else 'inconnu'}",
-                ephemeral=True,
-            )
-            return
+            user = interaction.user
+            existing = cfg.get_ticket_by_user(user.id)
+            if existing:
+                ch = guild.get_channel(existing["channel_id"])
+                await interaction.response.send_message(
+                    f"Tu as deja un ticket ouvert: {ch.mention if ch else 'inconnu'}",
+                    ephemeral=True,
+                )
+                return
 
-        await interaction.response.send_modal(TicketModal(category_key, cat.get("name", category_key)))
+            await interaction.response.send_modal(TicketModal(category_key, cat.get("name", category_key)))
+        except Exception as e:
+            logging.getLogger("vision").error(f"CategorySelect callback error: {e}", exc_info=True)
+            if not interaction.response.is_done():
+                await interaction.response.send_message(f"Erreur interne: `{e}`", ephemeral=True)
 
 
 class TicketModal(discord.ui.Modal, title="Nouveau Ticket"):
@@ -444,7 +450,7 @@ class ModMail(commands.Cog):
             open_button = discord.ui.Button(
                 label=f"Ouvrir — {cat['name']}",
                 style=discord.ButtonStyle.primary,
-                custom_id=f"modmail_quick_open:{key}",
+                custom_id="modmail_quick_open",
             )
             container.add_item(discord.ui.ActionRow(open_button))