feat(email): add digest and forward commands to WhatsApp

Digest summarizes unread emails via Claude CLI; forward sends raw
content (split to 4096 chars). Wired as /email digest and
/email forward slash commands, plus instant per-guild sync on ready.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/adapters/discord_bot.py

@@ -464,6 +464,18 @@ def create_bot(config: Config) -> discord.Client:
         result = await asyncio.to_thread(fast_dispatch, "email", ["save"])
         await interaction.followup.send(result)
 
+    @email_group.command(name="digest", description="Procesează emailuri necitite și trimite rezumate pe WhatsApp")
+    async def email_digest(interaction: discord.Interaction) -> None:
+        await interaction.response.defer()
+        result = await asyncio.to_thread(fast_dispatch, "email", ["digest"])
+        await interaction.followup.send(result)
+
+    @email_group.command(name="forward", description="Forwardează emailuri necitite direct pe WhatsApp fără rezumat")
+    async def email_forward(interaction: discord.Interaction) -> None:
+        await interaction.response.defer()
+        result = await asyncio.to_thread(fast_dispatch, "email", ["forward"])
+        await interaction.followup.send(result)
+
     tree.add_command(email_group)
 
     # --- Calendar commands ---
@@ -878,6 +890,10 @@ def create_bot(config: Config) -> discord.Client:
 
     @client.event
     async def on_ready() -> None:
+        # Sync to each guild instantly, then global (global can take up to 1h)
+        for guild in client.guilds:
+            tree.copy_global_to(guild=guild)
+            await tree.sync(guild=guild)
         await tree.sync()
         scheduler = getattr(client, "scheduler", None)
         if scheduler is not None: