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/skill-discovery.ts

@@ -260,7 +260,7 @@ export class SkillDiscoveryEngine {
           matchedPatterns.push(`记忆中有${memories.length}条相关记录`);
           confidence += memories.length * 0.1;
         }
-      } catch { /* non-critical */ }
+      } catch (e) { log.debug('Memory search in suggestSkills failed', { error: e }); }
 
       if (matchedPatterns.length > 0 && confidence > 0) {
         suggestions.push({
@@ -402,7 +402,8 @@ export class SkillDiscoveryEngine {
     try {
       const raw = localStorage.getItem(SKILL_INDEX_KEY);
       if (raw) this.skills = JSON.parse(raw);
-    } catch {
+    } catch (e) {
+      log.debug('Failed to load skill index from localStorage', { error: e });
       this.skills = [];
     }
   }
@@ -410,14 +411,15 @@ export class SkillDiscoveryEngine {
   private saveIndex(): void {
     try {
       localStorage.setItem(SKILL_INDEX_KEY, JSON.stringify(this.skills));
-    } catch { /* silent */ }
+    } catch (e) { log.debug('Failed to save skill index', { error: e }); }
   }
 
   private loadSuggestions(): void {
     try {
       const raw = localStorage.getItem(SKILL_SUGGESTIONS_KEY);
       if (raw) this.suggestionHistory = JSON.parse(raw);
-    } catch {
+    } catch (e) {
+      log.debug('Failed to load skill suggestions', { error: e });
       this.suggestionHistory = [];
     }
   }
@@ -425,7 +427,7 @@ export class SkillDiscoveryEngine {
   private saveSuggestions(): void {
     try {
       localStorage.setItem(SKILL_SUGGESTIONS_KEY, JSON.stringify(this.suggestionHistory));
-    } catch { /* silent */ }
+    } catch (e) { log.debug('Failed to save skill suggestions', { error: e }); }
   }
 }