Fix script hot-reload toast spam on project load

needs_reload() returned true for uncached scripts, causing the 0.5s
hot-reload timer to fire endlessly in editor mode where scripts never
execute. Also batch multiple reload toasts into a single summary and
remove automatic CI runs on push to main.

Author: RenzoraEngine

.github/workflows/build.yml

@@ -3,8 +3,6 @@ name: Build
 on:
   workflow_dispatch:
   push:
-    branches:
-      - main
     tags:
       - "v*"
 

crates/core/renzora_scripting/src/backends/lua.rs

@@ -263,7 +263,8 @@ impl ScriptBackend for LuaBackend {
 
     fn needs_reload(&self, path: &Path) -> bool {
         let cache = match self.cache.read() { Ok(c) => c, Err(_) => return false };
-        let Some(cached) = cache.get(path) else { return true };
+        // Not in cache = never loaded yet, not a "reload" scenario
+        let Some(cached) = cache.get(path) else { return false };
         // VFS/rpak scripts don't change at runtime — no reload needed once cached
         if self.file_reader.is_some() { return false; }
         let Ok(meta) = std::fs::metadata(path) else { return false };

crates/core/renzora_scripting/src/backends/rhai.rs

@@ -177,7 +177,8 @@ impl ScriptBackend for RhaiBackend {
 
     fn needs_reload(&self, path: &Path) -> bool {
         let cache = match self.cache.read() { Ok(c) => c, Err(_) => return false };
-        let Some(cached) = cache.get(path) else { return true };
+        // Not in cache = never loaded yet, not a "reload" scenario
+        let Some(cached) = cache.get(path) else { return false };
         if self.file_reader.is_some() { return false; }
         let Ok(meta) = std::fs::metadata(path) else { return false };
         let Ok(modified) = meta.modified() else { return false };

crates/editor/renzora_editor/src/lib.rs

@@ -140,13 +140,17 @@ impl Plugin for RenzoraEditorPlugin {
 }
 
 /// Picks up script hot-reload events and shows toast notifications.
+/// When many scripts reload at once (e.g. project load), shows a single
+/// summary toast instead of flooding the screen.
 fn show_script_reload_toasts(
     reload_events: Option<Res<renzora_scripting::ScriptReloadEvents>>,
     mut toasts: ResMut<renzora_ui::Toasts>,
 ) {
     let Some(events) = reload_events else { return };
-    for name in &events.reloaded {
-        toasts.success(format!("Reloaded {}", name));
+    match events.reloaded.len() {
+        0 => {}
+        1 => { toasts.success(format!("Reloaded {}", events.reloaded[0])); }
+        n => { toasts.success(format!("Reloaded {} scripts", n)); }
     }
 }