fix: chat history persistence and webview state restoration

PATCHNOTES.md

@@ -1,3 +1,12 @@
+# Patch Notes - v2.33.6 (2026-05-01)
+
+## 🛠️ Critical Bug Fixes
+- **Chat Persistence Overhaul:** Resolved an issue where chat history disappeared after switching sidebar tabs.
+- **Webview State Management:** Implemented `vscode.setState` for instant UI restoration.
+- **Internal Message Logic:** Refined message filtering to ensure intermediate agent steps are visible to the user.
+
+---
+
 # Patch Notes - v2.33.5 (2026-05-01)
 
 ## 🎨 UI Refinement

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": "2.33.5",
+  "version": "2.33.6",
   "publisher": "connectailab",
   "license": "MIT",
   "icon": "assets/icon.png",

src/agent.ts

@@ -119,7 +119,7 @@ export class AgentExecutor {
     }
 
     public getHistory() {
-        return this.chatHistory.filter(message => !message.internal);
+        return this.chatHistory.filter(message => !message.internal || message.role === 'assistant');
     }
 
     public setHistory(history: ChatMessage[]) {
@@ -394,7 +394,7 @@ export class AgentExecutor {
 
             // 5. Execute Actions
             const rationale = this.parseRationale(aiResponseText);
-            const assistantMessage: ChatMessage = { role: 'assistant', content: aiResponseText, internal: true, rationale };
+            const assistantMessage: ChatMessage = { role: 'assistant', content: aiResponseText, internal: false, rationale };
             this.chatHistory.push(assistantMessage);
             
             this.statusBarManager.updateStatus(AgentStatus.Executing);
@@ -443,7 +443,6 @@ export class AgentExecutor {
                 return;
             }
 
-            assistantMessage.internal = false;
             this.emitHistoryChanged();
             this.statusBarManager.updateStatus(AgentStatus.Success);
             this.webview.postMessage({ type: 'streamChunk', value: aiResponseText });

src/sidebarProvider.ts

@@ -200,7 +200,9 @@ export class SidebarChatProvider implements vscode.WebviewViewProvider, BridgeIn
         if (!this._view) return;
 
         const blankChatActive = this._context.globalState.get<boolean>(SidebarChatProvider.blankChatStateKey, false);
-        if (blankChatActive) {
+        const currentHistory = this._agent.getHistory();
+        
+        if (blankChatActive && currentHistory.length === 0) {
             return;
         }
 
@@ -212,7 +214,6 @@ export class SidebarChatProvider implements vscode.WebviewViewProvider, BridgeIn
             await this._context.globalState.update(SidebarChatProvider.activeSessionStateKey, null);
         }
 
-        const currentHistory = this._agent.getHistory();
         if (currentHistory.length > 0) {
             this._view.webview.postMessage({ type: 'restoreHistory', value: currentHistory });
             await this._persistLastVisibleChat(currentHistory);
@@ -1893,6 +1894,29 @@ export class SidebarChatProvider implements vscode.WebviewViewProvider, BridgeIn
         const vscode = acquireVsCodeApi();
         const chat = document.getElementById('chat');
         const input = document.getElementById('input');
+        
+        // [State Persistence - Tier 0] 즉시 복원 (Instant Restore from WebView State)
+        const previousState = vscode.getState();
+        if (previousState && previousState.history && previousState.history.length > 0) {
+            console.log('[G1nation] Restoring from Webview State...');
+            renderHistory(previousState.history);
+        }
+
+        function saveWebviewState(history) {
+            vscode.setState({ history });
+        }
+
+        function renderHistory(history) {
+            if (!history || history.length === 0) return;
+            chat.innerHTML = '';
+            history.forEach(m => {
+                if (!m) return;
+                // Only skip truly internal system messages, keep assistant thoughts
+                if (m.role === 'system' && m.internal) return;
+                addMsg(m.content, m.role === 'assistant' ? 'assistant' : 'user', m.rationale);
+            });
+            chat.scrollTop = chat.scrollHeight;
+        }
         const sendBtn = document.getElementById('sendBtn');
         const stopBtn = document.getElementById('stopBtn');
         const cancelBtn = document.getElementById('cancelBtn');
@@ -2112,6 +2136,10 @@ export class SidebarChatProvider implements vscode.WebviewViewProvider, BridgeIn
             switch(msg.type) {
                 case 'addMessage':
                     addMsg(msg.value, msg.role, msg.rationale);
+                    // Update state for non-streamed messages
+                    const s = vscode.getState() || { history: [] };
+                    s.history.push({ role: msg.role === 'assistant' ? 'assistant' : 'user', content: msg.value, rationale: msg.rationale });
+                    saveWebviewState(s.history);
                     break;
                 case 'streamStart':
                     thinkingBar.classList.remove('active');
@@ -2128,9 +2156,15 @@ export class SidebarChatProvider implements vscode.WebviewViewProvider, BridgeIn
                     }
                     break;
                 case 'streamEnd':
-                    if (streamBody) streamBody.classList.remove('stream-active');
+                    if (streamBody) {
+                        streamBody.classList.remove('stream-active');
+                        // Update state after stream finishes
+                        const state = vscode.getState() || { history: [] };
+                        state.history.push({ role: 'assistant', content: streamBody._parent._raw });
+                        saveWebviewState(state.history);
+                    }
                     streamBody = null;
-                    // \uc0dd\uc131 \uc644\ub8cc \uc2dc Stop \ubc84\ud2bc \uc228\uae30\uace0 Send \ubcf5\uad50
+                    // 생성 완료 시 Stop 버튼 숨기고 Send 복구
                     setGenerating(false);
                     resetStepper();
                     Sound.success();
@@ -2143,12 +2177,8 @@ export class SidebarChatProvider implements vscode.WebviewViewProvider, BridgeIn
                         : (Array.isArray(historyPayload?.history) ? historyPayload.history : []);
                     
                     if (history && history.length > 0) {
-                        chat.innerHTML = '';
-                        history.forEach(m => {
-                            if (!m || m.internal) return;
-                            addMsg(m.content, m.role === 'assistant' ? 'assistant' : 'user', m.rationale);
-                        });
-                        chat.scrollTop = chat.scrollHeight;
+                        renderHistory(history);
+                        saveWebviewState(history);
                     }
                     if (historyPayload?.negativePrompt !== undefined) {
                         negativePrompt.value = historyPayload.negativePrompt;
@@ -2358,6 +2388,11 @@ export class SidebarChatProvider implements vscode.WebviewViewProvider, BridgeIn
             setDraftActive(false);
             setGenerating(true);
             thinkingBar.classList.add('active');
+            
+            // Save state after sending
+            const currentState = vscode.getState() || { history: [] };
+            currentState.history.push({ role: 'user', content: val });
+            saveWebviewState(currentState.history);
         }
 
         sendBtn.onclick = send;