iCalendar export: domain service + API + MCP tool (#15)

crates/mcp/src/server.rs

@@ -14,7 +14,7 @@ use schemars::JsonSchema;
 use serde::Deserialize;
 use uuid::Uuid;
 
-use crate::tools::{channels, library, schedule};
+use crate::tools::{channels, ical, library, schedule};
 
 const SERVER_NAME: &str = "k-tv-mcp";
 
@@ -201,6 +201,16 @@ impl KTvMcpServer {
         )
         .await
     }
+
+    #[tool(
+        description = "Export a channel's schedule as iCalendar (.ics). Returns RFC 5545 text."
+    )]
+    async fn export_schedule_ical(&self, #[tool(aggr)] p: ChannelIdParam) -> String {
+        match parse_uuid(&p.channel_id) {
+            Ok(id) => ical::export_schedule_ical(&self.channel_query, id).await,
+            Err(e) => e,
+        }
+    }
 }
 
 #[tool(tool_box)]