refactor(desktop): split kernel_commands/pipeline_commands into modules, add SaaS client libs and gateway modules

Split monolithic kernel_commands.rs (2185 lines) and pipeline_commands.rs (1391 lines)
into focused sub-modules under kernel_commands/ and pipeline_commands/ directories.
Add gateway module (commands, config, io, runtime), health_check, and 15 new
TypeScript client libraries for SaaS relay, auth, admin, telemetry, and kernel
sub-systems (a2a, agent, chat, hands, skills, triggers).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

desktop/src/lib/embedding-client.ts

@@ -7,6 +7,9 @@
 
 import { invoke } from '@tauri-apps/api/core';
 import { secureStorage } from './secure-storage';
+import { createLogger } from './logger';
+
+const logger = createLogger('embedding-client');
 
 export interface EmbeddingConfig {
   provider: string;
@@ -46,8 +49,8 @@ export function loadEmbeddingConfig(): EmbeddingConfig {
       const parsed = JSON.parse(stored);
       return { ...parsed, apiKey: '' };
     }
-  } catch {
-    // ignore
+  } catch (e) {
+    logger.debug('Failed to load embedding config', { error: e });
   }
   return {
     provider: 'local',
@@ -66,8 +69,8 @@ export function saveEmbeddingConfig(config: EmbeddingConfig): void {
   try {
     const { apiKey: _, ...rest } = config;
     localStorage.setItem(EMBEDDING_STORAGE_KEY, JSON.stringify(rest));
-  } catch {
-    // ignore
+  } catch (e) {
+    logger.debug('Failed to save embedding config', { error: e });
   }
 }
 
@@ -203,7 +206,7 @@ export class EmbeddingClient {
     saveEmbeddingConfig(this.config);
     // Save apiKey to secure storage (fire-and-forget)
     if (config.apiKey !== undefined) {
-      saveEmbeddingApiKey(config.apiKey).catch(() => {});
+      saveEmbeddingApiKey(config.apiKey).catch(e => logger.debug('Failed to save embedding API key', { error: e }));
     }
   }