Add local season/episode matching and on-disk rename (skip-on-conflict, confirm-first)

src-tauri/src/lib.rs

@@ -1,6 +1,8 @@
 mod files;
 
 use renamr_core::format::ExpressionFormat;
+use renamr_core::matching::{self, EpisodeGuess};
+use renamr_core::rename::{self, RenamePlanItem, RenameResult};
 use renamr_core::string_bindings;
 use std::collections::HashMap;
 
@@ -15,12 +17,35 @@ fn render_expression(expression: String, bindings: HashMap<String, String>) -> R
         .map_err(|e| e.to_string())
 }
 
+/// Guesses a season/episode number pair (and series name) from a filename using local
+/// regex patterns only - no network calls, no metadata lookup. Returns `None` when the
+/// filename doesn't carry a recognizable season/episode marker (movies, already-clean
+/// names, etc).
+#[tauri::command]
+fn guess_episode(filename: String) -> Option<EpisodeGuess> {
+    matching::guess_episode(&filename)
+}
+
+/// Executes a batch of planned on-disk renames (same-directory rename only; conflicting
+/// targets are skipped, never overwritten - see `renamr_core::rename` for the policy).
+/// The UI is expected to have already shown the user the full old-name/new-name plan
+/// and gotten explicit confirmation before calling this - there is no undo yet.
+/// Runs off the main thread since real filesystem I/O shouldn't block the UI.
+#[tauri::command]
+async fn execute_rename(items: Vec<RenamePlanItem>) -> Vec<RenameResult> {
+    tauri::async_runtime::spawn_blocking(move || rename::execute_renames(&items))
+        .await
+        .unwrap_or_default()
+}
+
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
     tauri::Builder::default()
         .plugin(tauri_plugin_dialog::init())
         .invoke_handler(tauri::generate_handler![
             render_expression,
+            guess_episode,
+            execute_rename,
             files::pick_files,
             files::pick_folder,
             files::expand_dropped_paths,