feat(plugins): update plugin format to new entry_point + [[providers]] style

- owlry-core/manifest: add entry_point alias for entry field, add ProviderSpec
  struct for [[providers]] array, change default entry to main.lua
- owlry-lua/manifest: add ProviderDecl struct and providers: Vec<ProviderDecl>
  for [[providers]] support
- owlry-lua/loader: fall back to manifest [[providers]] when script has no API
  registrations; fall back to global refresh() for manifest-declared providers
- owlry-lua/api: expose call_global_refresh() that calls the top-level Lua
  refresh() function directly
- owlry/plugin_commands: update create templates to emit new format:
  entry_point instead of entry, [[providers]] instead of [provides],
  main.rn/main.lua instead of init.rn/init.lua, Rune uses Item::new() builder
  pattern, Lua uses standalone refresh() function
- cmd_validate: accept [[providers]] declarations as a valid provides source

crates/owlry-lua/src/api/mod.rs

@@ -50,3 +50,8 @@ pub fn call_refresh(lua: &Lua, provider_name: &str) -> LuaResult<Vec<PluginItem>
 pub fn call_query(lua: &Lua, provider_name: &str, query: &str) -> LuaResult<Vec<PluginItem>> {
     provider::call_query(lua, provider_name, query)
 }
+
+/// Call the global `refresh()` function (for manifest-declared providers)
+pub fn call_global_refresh(lua: &Lua) -> LuaResult<Vec<PluginItem>> {
+    provider::call_global_refresh(lua)
+}

crates/owlry-lua/src/api/provider.rs

@@ -76,6 +76,15 @@ fn register_provider(lua: &Lua, config: Table) -> LuaResult<()> {
     Ok(())
 }
 
+/// Call the top-level `refresh()` global function (for manifest-declared providers)
+pub fn call_global_refresh(lua: &Lua) -> LuaResult<Vec<PluginItem>> {
+    let globals = lua.globals();
+    match globals.get::<Function>("refresh") {
+        Ok(refresh_fn) => parse_items_result(refresh_fn.call(())?),
+        Err(_) => Ok(Vec::new()),
+    }
+}
+
 /// Get all registered providers
 pub fn get_registrations(lua: &Lua) -> LuaResult<Vec<ProviderRegistration>> {
     // Suppress unused warning

crates/owlry-lua/src/loader.rs

@@ -96,8 +96,28 @@ impl LoadedPlugin {
             .as_ref()
             .ok_or_else(|| "Plugin not initialized".to_string())?;
 
-        api::get_provider_registrations(lua)
-            .map_err(|e| format!("Failed to get registrations: {}", e))
+        let mut regs = api::get_provider_registrations(lua)
+            .map_err(|e| format!("Failed to get registrations: {}", e))?;
+
+        // Fall back to manifest [[providers]] declarations when the script
+        // doesn't call owlry.provider.register() (new-style plugins)
+        if regs.is_empty() {
+            for decl in &self.manifest.providers {
+                regs.push(ProviderRegistration {
+                    name: decl.id.clone(),
+                    display_name: decl.name.clone(),
+                    type_id: decl.type_id.clone().unwrap_or_else(|| decl.id.clone()),
+                    default_icon: decl
+                        .icon
+                        .clone()
+                        .unwrap_or_else(|| "application-x-addon".to_string()),
+                    prefix: decl.prefix.clone(),
+                    is_dynamic: decl.provider_type == "dynamic",
+                });
+            }
+        }
+
+        Ok(regs)
     }
 
     /// Call a provider's refresh function
@@ -107,7 +127,17 @@ impl LoadedPlugin {
             .as_ref()
             .ok_or_else(|| "Plugin not initialized".to_string())?;
 
-        api::call_refresh(lua, provider_name).map_err(|e| format!("Refresh failed: {}", e))
+        let items = api::call_refresh(lua, provider_name)
+            .map_err(|e| format!("Refresh failed: {}", e))?;
+
+        // If the API path returned nothing, try calling the global refresh()
+        // function directly (new-style plugins with manifest [[providers]])
+        if items.is_empty() {
+            return api::call_global_refresh(lua)
+                .map_err(|e| format!("Refresh failed: {}", e));
+        }
+
+        Ok(items)
     }
 
     /// Call a provider's query function

crates/owlry-lua/src/manifest.rs

@@ -8,6 +8,10 @@ use std::path::Path;
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct PluginManifest {
     pub plugin: PluginInfo,
+    /// Provider declarations from [[providers]] sections (new-style)
+    #[serde(default)]
+    pub providers: Vec<ProviderDecl>,
+    /// Legacy provides block (old-style)
     #[serde(default)]
     pub provides: PluginProvides,
     #[serde(default)]
@@ -16,6 +20,26 @@ pub struct PluginManifest {
     pub settings: HashMap<String, toml::Value>,
 }
 
+/// A provider declared in a [[providers]] section
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ProviderDecl {
+    pub id: String,
+    pub name: String,
+    #[serde(default)]
+    pub prefix: Option<String>,
+    #[serde(default)]
+    pub icon: Option<String>,
+    /// "static" (default) or "dynamic"
+    #[serde(default = "default_provider_type", rename = "type")]
+    pub provider_type: String,
+    #[serde(default)]
+    pub type_id: Option<String>,
+}
+
+fn default_provider_type() -> String {
+    "static".to_string()
+}
+
 /// Core plugin information
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct PluginInfo {