feat(omo): add OMO Slim (oh-my-opencode-slim) support

Implement full OMO Slim profile management to align with ai-toolbox:
- Backend: Slim service methods, DAO, Tauri commands, plugin conflict handling
- Frontend: types, API, query hooks, form integration with isSlim parameterization
- Slim variant: 6 agents (no categories), separate config file and plugin name
- Mutual exclusion: standard OMO and Slim cannot coexist as plugins
- i18n: zh/en/ja translations for all Slim agent descriptions

src/components/providers/forms/hooks/useOmoModelSource.ts

@@ -133,7 +133,7 @@ export function useOmoModelSource({
     const parseFailedProviders: string[] = [];
 
     for (const [providerKey, provider] of Object.entries(allProviders)) {
-      if (provider.category === "omo") {
+      if (provider.category === "omo" || provider.category === "omo-slim") {
         continue;
       }
       if (liveSet && !liveSet.has(providerKey)) {