Add incoming message visibility and shell command execution to Aider runner
- Emit 'input' events so agents show received prompts in their console - Execute detected shell commands (btmsg, bttask, etc.) from LLM output - Feed command results back to aider for iterative autonomous work - Detect commands in code blocks, bare btmsg/bttask lines, and $ prefixes - More robust THINKING/ANSWER marker detection (multiple unicode variants) - Adapter handles new 'input' and 'tool_result' event types Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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DexterFromLab
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2 changed files with 141 additions and 9 deletions
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@ -145,6 +145,19 @@ function shouldSuppress(line: string): boolean {
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return t === '' || SUPPRESS_RE.some(p => p.test(t));
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}
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// --- Shell command execution ---
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// Runs a shell command and returns {stdout, stderr, exitCode}
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function execShell(cmd: string, env: Record<string, string>, cwd: string): { stdout: string; exitCode: number } {
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try {
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const result = execSync(cmd, { env, cwd, timeout: 30000, encoding: 'utf-8', stdio: ['pipe', 'pipe', 'pipe'] });
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return { stdout: result.trim(), exitCode: 0 };
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} catch (e: unknown) {
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const err = e as { stdout?: string; stderr?: string; status?: number };
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return { stdout: (err.stdout ?? err.stderr ?? String(e)).trim(), exitCode: err.status ?? 1 };
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}
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}
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// --- Turn output parsing ---
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// Parses complete turn output into structured blocks:
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// thinking, answer text, shell commands, cost info
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@ -154,6 +167,9 @@ interface TurnBlock {
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content: string;
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}
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// Known shell command patterns — commands from btmsg/bttask/common tools
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const SHELL_CMD_RE = /^(btmsg |bttask |cat |ls |find |grep |mkdir |cd |cp |mv |rm |pip |npm |git |curl |wget |python |node |bash |sh )/;
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function parseTurnOutput(buffer: string): TurnBlock[] {
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const blocks: TurnBlock[] = [];
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const lines = buffer.split('\n');
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@ -162,23 +178,26 @@ function parseTurnOutput(buffer: string): TurnBlock[] {
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let answerLines: string[] = [];
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let inThinking = false;
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let inAnswer = false;
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let inCodeBlock = false;
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let codeBlockLang = '';
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let codeBlockLines: string[] = [];
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for (const line of lines) {
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const t = line.trim();
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// Skip suppressed lines
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if (shouldSuppress(line)) continue;
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if (shouldSuppress(line) && !inCodeBlock) continue;
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// Prompt markers — skip
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if (PROMPT_RE.test(t)) continue;
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// Thinking block markers
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if (t === '► THINKING' || t === '► THINKING') {
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// Thinking block markers (handle various unicode arrows and spacing)
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if (/^[►▶⯈❯>]\s*THINKING$/i.test(t)) {
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inThinking = true;
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inAnswer = false;
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continue;
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}
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if (t === '► ANSWER' || t === '► ANSWER') {
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if (/^[►▶⯈❯>]\s*ANSWER$/i.test(t)) {
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if (thinkingLines.length > 0) {
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blocks.push({ type: 'thinking', content: thinkingLines.join('\n') });
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thinkingLines = [];
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@ -188,15 +207,44 @@ function parseTurnOutput(buffer: string): TurnBlock[] {
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continue;
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}
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// Code block detection (```bash, ```shell, ```)
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if (t.startsWith('```') && !inCodeBlock) {
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inCodeBlock = true;
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codeBlockLang = t.slice(3).trim().toLowerCase();
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codeBlockLines = [];
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continue;
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}
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if (t === '```' && inCodeBlock) {
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inCodeBlock = false;
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// If this was a bash/shell code block, extract commands
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if (['bash', 'shell', 'sh', ''].includes(codeBlockLang)) {
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for (const cmdLine of codeBlockLines) {
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const cmd = cmdLine.trim().replace(/^\$ /, '');
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if (cmd && SHELL_CMD_RE.test(cmd)) {
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if (answerLines.length > 0) {
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blocks.push({ type: 'text', content: answerLines.join('\n') });
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answerLines = [];
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}
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blocks.push({ type: 'shell', content: cmd });
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}
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}
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}
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codeBlockLines = [];
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continue;
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}
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if (inCodeBlock) {
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codeBlockLines.push(line);
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continue;
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}
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// Cost line
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if (/^Tokens: .+Cost:/.test(t)) {
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blocks.push({ type: 'cost', content: t });
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continue;
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}
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// Shell command
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// Shell command ($ prefix or Running prefix)
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if (t.startsWith('$ ') || t.startsWith('Running ')) {
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// Flush accumulated answer text first
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if (answerLines.length > 0) {
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blocks.push({ type: 'text', content: answerLines.join('\n') });
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answerLines = [];
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@ -205,6 +253,19 @@ function parseTurnOutput(buffer: string): TurnBlock[] {
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continue;
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}
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// Detect bare btmsg/bttask commands in answer text
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if (inAnswer && SHELL_CMD_RE.test(t) && !t.includes('`') && !t.startsWith('#')) {
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if (answerLines.length > 0) {
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blocks.push({ type: 'text', content: answerLines.join('\n') });
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answerLines = [];
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}
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blocks.push({ type: 'shell', content: t });
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continue;
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}
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// Aider's "Applied edit" / flake8 output — suppress from answer text
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if (/^Applied edit to |^Fix any errors|^Running: /.test(t)) continue;
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// Accumulate into thinking or answer
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if (inThinking) {
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thinkingLines.push(line);
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@ -249,6 +310,13 @@ async function handleQuery(msg: QueryMessage) {
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send({ type: 'agent_started', sessionId });
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// Show the incoming prompt in the console
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send({
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type: 'agent_event',
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sessionId,
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event: { type: 'input', prompt },
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});
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// Pre-fetch fresh context for follow-up turns too
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const ctx = prefetchContext(existing.env, existing.cwd);
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const fullPrompt = `${ctx}\n\nNow act on the above. Your current task:\n${prompt}`;
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@ -294,6 +362,13 @@ async function handleQuery(msg: QueryMessage) {
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event: { type: 'system', subtype: 'init', session_id: sessionId, model: aiderModel, cwd },
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});
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// Show the incoming prompt in the console
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send({
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type: 'agent_event',
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sessionId,
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event: { type: 'input', prompt },
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});
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const child = spawn(aiderPath, args, {
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cwd,
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env,
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@ -355,7 +430,9 @@ async function handleQuery(msg: QueryMessage) {
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const duration = Date.now() - session.turnStartTime;
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const blocks = parseTurnOutput(session.turnBuffer);
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// Emit structured blocks
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// Emit structured blocks and execute shell commands
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const shellResults: string[] = [];
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for (const block of blocks) {
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switch (block.type) {
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case 'thinking':
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@ -376,18 +453,40 @@ async function handleQuery(msg: QueryMessage) {
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}
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break;
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case 'shell':
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case 'shell': {
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const cmdId = `shell-${Date.now()}-${Math.random().toString(36).slice(2, 6)}`;
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// Emit tool_use (command being run)
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send({
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type: 'agent_event',
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sessionId,
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event: {
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type: 'tool_use',
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id: `shell-${Date.now()}`,
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id: cmdId,
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name: 'Bash',
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input: { command: block.content },
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},
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});
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// Actually execute the command
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log(`[exec] Running: ${block.content}`);
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const result = execShell(block.content, session.env, session.cwd);
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const output = result.stdout || '(no output)';
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// Emit tool_result (command output)
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send({
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type: 'agent_event',
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sessionId,
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event: {
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type: 'tool_result',
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tool_use_id: cmdId,
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content: output,
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},
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});
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shellResults.push(`$ ${block.content}\n${output}`);
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break;
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}
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case 'cost':
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// Parsed below for the result event
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@ -416,6 +515,17 @@ async function handleQuery(msg: QueryMessage) {
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send({ type: 'agent_stopped', sessionId, exitCode: 0, signal: null });
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session.turnBuffer = '';
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// If commands were executed, feed results back to aider for next turn
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if (shellResults.length > 0 && child.exitCode === null) {
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const feedback = `The following commands were executed and here are the results:\n\n${shellResults.join('\n\n')}\n\nBased on these results, continue your work. If the task is complete, say "DONE".`;
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log(`[exec] Feeding ${shellResults.length} command results back to aider`);
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session.turnBuffer = '';
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session.turnStartTime = Date.now();
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session.turns++;
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send({ type: 'agent_started', sessionId });
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child.stdin?.write(feedback + '\n');
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}
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});
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child.stderr?.on('data', (data: Buffer) => {
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