diff --git a/PATCHNOTES.md b/PATCHNOTES.md
index 5783719..0fb1e63 100644
--- a/PATCHNOTES.md
+++ b/PATCHNOTES.md
@@ -1,3 +1,14 @@
+# Patch Notes - v2.33.7 (2026-05-01)
+
+## ⚙️ Logic Refinement
+- **Multi-Agent Routing:** Optimized workflow to prioritize local project analysis over general multi-agent execution when explicit projects are referenced.
+- **Intent Detection:** Expanded analysis intent keywords for better project-level understanding triggers.
+- **Error Handling:** Improved diagnostic details for empty AI responses to help troubleshoot local server issues.
+- **Default Config:** Set `multiAgentEnabled` to `false` by default for a leaner initial experience.
+- **UI Polish:** Enhanced Multi-Agent button UI with dynamic tooltips and state synchronization.
+
+---
+
 # Patch Notes - v2.33.6 (2026-05-01)
 
 ## 🛠️ Critical Bug Fixes
diff --git a/package.json b/package.json
index b24194d..f995cae 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "g1nation",
   "displayName": "G1nation",
   "description": "High-performance autonomous local AI coding agent for VS Code. Features vectorized inference, asynchronous task management, and 100% offline processing.",
-  "version": "2.33.6",
+  "version": "2.33.7",
   "publisher": "connectailab",
   "license": "MIT",
   "icon": "assets/icon.png",
@@ -97,7 +97,7 @@
       "properties": {
         "g1nation.multiAgentEnabled": {
           "type": "boolean",
-          "default": true,
+          "default": false,
           "description": "Enable Multi-Agent Workflow (Planner -> Researcher -> Writer) for complex tasks."
         },
         "g1nation.multiAgentWorkflow": {
diff --git a/src/agent.ts b/src/agent.ts
index 80e1dd0..682e753 100644
--- a/src/agent.ts
+++ b/src/agent.ts
@@ -190,7 +190,10 @@ export class AgentExecutor {
         
         // Decide whether to use Multi-Agent Workflow (for complex requests)
         const isComplex = prompt && (prompt.length > 100 || /(분석|보고서|설계|기획|정리)/.test(prompt));
-        if (isComplex && loopDepth === 0 && multiAgentEnabled) {
+        const explicitLocalProjectTask = prompt
+            ? !!(await this.resolveProjectReference(prompt)) && this.isProjectAnalysisRequest(prompt.toLowerCase())
+            : false;
+        if (isComplex && loopDepth === 0 && multiAgentEnabled && !explicitLocalProjectTask) {
             return this.executeMultiAgentWorkflow(prompt!, modelName, options);
         }
 
@@ -401,8 +404,16 @@ export class AgentExecutor {
             const report = await this.executeActions(aiResponseText, rootPath);
             if (!aiResponseText.trim() && report.length === 0) {
                 this.chatHistory.pop();
-                logError('Model returned an empty response without actions.', { model: actualModel, loopDepth });
-                this.webview.postMessage({ type: 'error', value: 'AI model returned an empty response.' });
+                logError('Model returned an empty response without actions.', { model: actualModel, engine, apiUrl, loopDepth });
+                this.webview.postMessage({
+                    type: 'error',
+                    value: [
+                        'AI engine returned an empty response.',
+                        `Engine: ${engine}`,
+                        `Model: ${actualModel}`,
+                        'The request reached the local LLM server, but no usable content was returned. Try another model, restart the local server, or reduce the prompt/context size.'
+                    ].join('\n')
+                });
                 return;
             }
 
@@ -653,7 +664,7 @@ export class AgentExecutor {
         // Only trigger local analysis if the intent is strictly about a project-level overview.
         // Avoid generic terms like 'analysis' or 'review' that are common in general coding chat.
         const hasProjectKeyword = /(프로젝트|project|레포|repository)/.test(normalized);
-        const hasAnalysisIntent = /(전체 요약|제품 설명|어떤 프로그램|구조 파악|훑어보기)/.test(normalized);
+        const hasAnalysisIntent = /(전체 요약|제품 설명|어떤 프로그램|구조 파악|훑어보기|분석 문서|모든 코드|준비한 모든 코드|코드를 읽고|프로젝트를 이해|설계|기능|코드 품질|문제성|리뷰|평가)/.test(normalized);
         
         return hasProjectKeyword && hasAnalysisIntent;
     }
diff --git a/src/config.ts b/src/config.ts
index a9ea6c6..09729cb 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -165,7 +165,7 @@ export function getConfig(): IAgentConfig {
         maxContextSize: cfg.get<number>('maxContextSize', 12000),
         maxAutoSteps: cfg.get<number>('maxAutoSteps', 50),
         dryRun: cfg.get<boolean>('dryRun', false),
-        multiAgentEnabled: cfg.get<boolean>('multiAgentEnabled', true),
+        multiAgentEnabled: cfg.get<boolean>('multiAgentEnabled', false),
         multiAgentWorkflow: multiAgentWorkflow.length > 0 ? multiAgentWorkflow : DEFAULT_MULTI_AGENT_WORKFLOW,
         memoryEnabled: cfg.get<boolean>('memoryEnabled', true),
         memoryShortTermMessages: Math.max(0, cfg.get<number>('memoryShortTermMessages', 8)),
diff --git a/src/sidebarProvider.ts b/src/sidebarProvider.ts
index ff59e88..ce4ff69 100644
--- a/src/sidebarProvider.ts
+++ b/src/sidebarProvider.ts
@@ -2428,11 +2428,16 @@ export class SidebarChatProvider implements vscode.WebviewViewProvider, BridgeIn
             internetEnabled = !internetEnabled; document.getElementById('internetBtn').classList.toggle('active', internetEnabled);
         };
 
-        let multiAgentEnabled = true;
+        let multiAgentEnabled = false;
+        const setMultiAgentUi = (enabled) => {
+            multiAgentEnabled = enabled;
+            const btn = document.getElementById('multiAgentBtn');
+            btn.classList.toggle('active', enabled);
+            btn.setAttribute('data-tooltip', enabled ? 'Multi-Agent Mode: On' : 'Multi-Agent Mode: Off');
+        };
         document.getElementById('multiAgentBtn').onclick = () => {
-            multiAgentEnabled = !multiAgentEnabled;
+            setMultiAgentUi(!multiAgentEnabled);
             vscode.postMessage({ type: 'toggleMultiAgent', value: multiAgentEnabled });
-            document.getElementById('multiAgentBtn').classList.toggle('active', multiAgentEnabled);
         };
 
         const syncBrain = () => { Sound.play(550, 'sine', 0.1); vscode.postMessage({ type: 'syncBrain' }); };
@@ -2483,8 +2488,7 @@ export class SidebarChatProvider implements vscode.WebviewViewProvider, BridgeIn
         window.addEventListener('message', e => {
             const msg = e.data;
             if (msg.type === 'configUpdate') {
-                multiAgentEnabled = msg.value.multiAgentEnabled;
-                document.getElementById('multiAgentBtn').classList.toggle('active', multiAgentEnabled);
+                setMultiAgentUi(!!msg.value.multiAgentEnabled);
             }
         });