feat(readarr): trigger automatic author searches and expose the command on the CLI

Posts the AuthorSearch command to the command endpoint with the author ID, queueing an indexer search for that author. The response is returned verbatim and no app state is mutated.

Introduces ReadarrCommandBody, the request body shared by the author and book command calls. Both ID fields are omitted from the payload when absent rather than sent as null.

src/cli/readarr/mod.rs

@@ -8,6 +8,9 @@ use edit_command_handler::{ReadarrEditCommand, ReadarrEditCommandHandler};
 use get_command_handler::{ReadarrGetCommand, ReadarrGetCommandHandler};
 use list_command_handler::{ReadarrListCommand, ReadarrListCommandHandler};
 use tokio::sync::Mutex;
+use trigger_automatic_search_command_handler::{
+  ReadarrTriggerAutomaticSearchCommand, ReadarrTriggerAutomaticSearchCommandHandler,
+};
 
 use super::{CliCommandHandler, Command};
 use crate::models::readarr_models::ReadarrTaskName;
@@ -19,6 +22,7 @@ mod delete_command_handler;
 mod edit_command_handler;
 mod get_command_handler;
 mod list_command_handler;
+mod trigger_automatic_search_command_handler;
 
 #[cfg(test)]
 #[path = "readarr_command_tests.rs"]
@@ -51,6 +55,11 @@ pub enum ReadarrCommand {
     about = "Commands to list attributes from your Readarr instance"
   )]
   List(ReadarrListCommand),
+  #[command(
+    subcommand,
+    about = "Commands to trigger automatic searches for releases of different resources in your Readarr instance"
+  )]
+  TriggerAutomaticSearch(ReadarrTriggerAutomaticSearchCommand),
   #[command(about = "Search for a new author to add to Readarr")]
   SearchNewAuthor {
     #[arg(
@@ -135,6 +144,15 @@ impl<'a, 'b> CliCommandHandler<'a, 'b, ReadarrCommand> for ReadarrCliHandler<'a,
           .handle()
           .await?
       }
+      ReadarrCommand::TriggerAutomaticSearch(trigger_automatic_search_command) => {
+        ReadarrTriggerAutomaticSearchCommandHandler::with(
+          self.app,
+          trigger_automatic_search_command,
+          self.network,
+        )
+        .handle()
+        .await?
+      }
       ReadarrCommand::SearchNewAuthor { query } => {
         let resp = self
           .network