v2.8.0 — Code editor tab + context panel improvements

- Add 💻 코드 nav button; code mode shows aside + right-panel
- Code mode left sidebar: 파일/모델/설정 tabs (file tree, model selector, Monaco settings)
- Monaco editor settings restored from localStorage on init
- Server log panel: collapsible (▾ toggle), height fixed to 50% of aside
- Context panel compact layout: reduced padding/margins/min-heights throughout so all sections (시스템통계/에이전트컨텍스트/빠른작업/프로세스로그) fit without scrolling
- POST /api/code/save, GET /api/code/files, GET /api/code/file, DELETE /api/code/file endpoints
- Coder AI: glm-5.1:cloud default, auto-open generated code in Monaco tabs
- Code folder browser with fixed-position dropdown (escape overflow clip)
- Code editor terminal panel with PTY/xterm.js (Ctrl+` shortcut)
- Remove canvas panel; restore chat terminal infrastructure

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

src/tools/image.ts

@@ -23,7 +23,7 @@ function runPython(script: string, timeoutMs = 60_000): Promise<any> {
       env: { ...process.env },
     });
     let out = '';
-    child.stdout.on('data', (d: Buffer) => { out += d.toString(); });
+    child.stdout.on('data', (d: Buffer) => { out += d.toString('utf8'); });
     child.stderr.on('data', () => {});
     child.on('close', () => {
       try { resolve(JSON.parse(out || '{}')); } catch { resolve({ error: 'Failed to parse output', raw: out.slice(0, 500) }); }
@@ -110,7 +110,7 @@ export const imageReadTool = {
         env: { ...process.env },
       });
       let out = '';
-      child.stdout.on('data', (d: Buffer) => { out += d.toString(); });
+      child.stdout.on('data', (d: Buffer) => { out += d.toString('utf8'); });
       child.on('close', () => {
         try { resolve(JSON.parse(out || '{}')); } catch { resolve({ error: 'Failed to parse OCR output' }); }
       });

src/tools/python.ts

@@ -113,10 +113,10 @@ export const pythonEvalTool = {
       }, timeoutSec * 1000);
 
       child.stdout.on('data', (d: Buffer) => {
-        stdout += d.toString();
+        stdout += d.toString('utf8');
         if (stdout.length > 50_000) child.kill('SIGKILL');
       });
-      child.stderr.on('data', (d: Buffer) => { stderr += d.toString(); });
+      child.stderr.on('data', (d: Buffer) => { stderr += d.toString('utf8'); });
       child.on('close', (code: number | null) => {
         if (settled) return;
         settled = true;

src/tools/self-repair.ts

@@ -135,6 +135,7 @@ export async function executeProposeRepair(args: ProposeRepairArgs): Promise<Too
     execSync(`git apply --check --whitespace=nowarn "${tmpPatch}"`, {
       cwd: root,
       stdio: 'pipe',
+      encoding: 'utf8',
     });
   } catch (checkErr: any) {
     const details = String(checkErr?.stderr || checkErr?.stdout || checkErr?.message || 'unknown').trim();
@@ -257,7 +258,7 @@ export async function applyApprovedRepair(repairId: string): Promise<ApplyRepair
 
     // Step 1: Final check before apply
     try {
-      execSync(`git apply --check --whitespace=nowarn "${tmpPatch}"`, { cwd: root, stdio: 'pipe' });
+      execSync(`git apply --check --whitespace=nowarn "${tmpPatch}"`, { cwd: root, stdio: 'pipe', encoding: 'utf8' });
     } catch (checkErr: any) {
       const details = String(checkErr?.stderr || checkErr?.message || '').slice(0, 500);
       repair.status = 'failed';
@@ -271,7 +272,7 @@ export async function applyApprovedRepair(repairId: string): Promise<ApplyRepair
     }
 
     // Step 2: Apply the patch
-    execSync(`git apply --whitespace=nowarn "${tmpPatch}"`, { cwd: root, stdio: 'pipe' });
+    execSync(`git apply --whitespace=nowarn "${tmpPatch}"`, { cwd: root, stdio: 'pipe', encoding: 'utf8' });
     repair.status = 'approved';
     savePendingRepair(repair);
 
@@ -307,7 +308,7 @@ export async function applyApprovedRepair(repairId: string): Promise<ApplyRepair
     const revertPatch = path.join(os.tmpdir(), `smallclaw-repair-revert-${Date.now()}.patch`);
     try {
       fs.writeFileSync(revertPatch, repair.patch, 'utf-8');
-      execSync(`git apply --reverse --whitespace=nowarn "${revertPatch}"`, { cwd: root, stdio: 'pipe' });
+      execSync(`git apply --reverse --whitespace=nowarn "${revertPatch}"`, { cwd: root, stdio: 'pipe', encoding: 'utf8' });
     } catch {
       // Revert also failed — leave a note
       repair.buildOutput += '\n\n⚠️ Auto-revert also failed. Source may be in a modified state.';

src/tools/stt.ts

@@ -43,7 +43,7 @@ async function convertAudioToWav(
         outputPath,
       ]);
       let stderr = '';
-      ffmpeg.stderr.on('data', (d: Buffer) => { stderr += d.toString(); });
+      ffmpeg.stderr.on('data', (d: Buffer) => { stderr += d.toString('utf8'); });
       ffmpeg.on('close', (code) => {
         if (code === 0) resolve();
         else reject(new Error(`ffmpeg exited ${code}: ${stderr}`));
@@ -85,8 +85,8 @@ export async function transcribeAudio(
       const whisper = spawn(config.whisperPath, args);
       let stdout = '';
       let stderr = '';
-      whisper.stdout.on('data', (d: Buffer) => { stdout += d.toString(); });
-      whisper.stderr.on('data', (d: Buffer) => { stderr += d.toString(); });
+      whisper.stdout.on('data', (d: Buffer) => { stdout += d.toString('utf8'); });
+      whisper.stderr.on('data', (d: Buffer) => { stderr += d.toString('utf8'); });
       whisper.on('close', (code) => {
         if (code !== 0) {
           reject(new Error(`whisper-cli exited ${code}: ${stderr.slice(0, 500)}`));

src/tools/tts.ts

@@ -49,7 +49,7 @@ export async function synthesizeSpeech(text: string): Promise<Buffer> {
     await new Promise<void>((resolve, reject) => {
       const piper = spawn(config.piperPath, piperArgs);
       let stderr = '';
-      piper.stderr.on('data', (d: Buffer) => { stderr += d.toString(); });
+      piper.stderr.on('data', (d: Buffer) => { stderr += d.toString('utf8'); });
       piper.stdin.write(truncatedText);
       piper.stdin.end();
       piper.on('close', (code) => {
@@ -68,7 +68,7 @@ export async function synthesizeSpeech(text: string): Promise<Buffer> {
         oggPath,
       ]);
       let stderr = '';
-      ffmpeg.stderr.on('data', (d: Buffer) => { stderr += d.toString(); });
+      ffmpeg.stderr.on('data', (d: Buffer) => { stderr += d.toString('utf8'); });
       ffmpeg.on('close', (code) => {
         if (code === 0) resolve();
         else reject(new Error(`ffmpeg exited ${code}: ${stderr}`));