feat(search): find a Spring endpoint by its request path (#820)

Search Everywhere lists Spring Web endpoints matched by request path (context path tolerated) or handler method name, and Enter opens the handler. The host scans Java/Kotlin sources that name a mapping; http-client parses and indexes them and hands the entries to search through an endpoint contribution, so search does not import http-client. The index is invalidated when a Java/Kotlin file changes.

Route source path assertions compare by path component so they hold on Windows.

Co-authored-by: misswell <[email protected]>
Co-Authored-By: Claude Opus 5.5 <[email protected]>

src-tauri/src/commands/mod.rs

@@ -182,6 +182,7 @@ pub fn builder() -> tauri_specta::Builder<tauri::Wry> {
         caches::caches_schedule_invalidation,
         caches::app_restart,
         nav::index_status,
+        nav::spring_route_sources,
         nav::find_files,
         nav::find_symbols,
         nav::mark_recent,

src-tauri/src/commands/nav.rs

@@ -22,6 +22,16 @@ pub fn find_files(window: Window, state: State<'_, AppState>, query: String, lim
     ide_host::ops::nav::find_files(&state.host, window.label(), query, limit)
 }
 
+/// Spring Web mapping sources for the request-path index of Search Everywhere.
+#[tauri::command]
+#[specta::specta]
+pub fn spring_route_sources(
+    window: Window,
+    state: State<'_, AppState>,
+) -> IdeResult<Vec<ide_host::ops::routes::RouteSource>> {
+    ide_host::ops::routes::spring_route_sources(&state.host, window.label())
+}
+
 #[tauri::command]
 #[specta::specta]
 pub fn find_symbols(