fix: pass assistantName to container agent instead of hardcoding 'Andy'

The container agent-runner had 'Andy' hardcoded as the sender name in
archived conversation transcripts. This ignored the configurable
ASSISTANT_NAME setting, so users who changed their assistant's name
(via .env or config) would still see 'Andy' in transcripts.

- Add assistantName field to ContainerInput interface (both host and
  container copies)
- Pass ASSISTANT_NAME from config through to container in index.ts
  and task-scheduler.ts
- Thread assistantName through createPreCompactHook and
  formatTranscriptMarkdown in the agent-runner
- Use 'AssistantNameMissing' as fallback instead of 'Andy' so a
  missing name is visible rather than silently wrong

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

container/agent-runner/src/index.ts

@@ -26,6 +26,7 @@ interface ContainerInput {
   chatJid: string;
   isMain: boolean;
   isScheduledTask?: boolean;
+  assistantName?: string;
   secrets?: Record<string, string>;
 }
 
@@ -142,7 +143,7 @@ function getSessionSummary(sessionId: string, transcriptPath: string): string |
 /**
  * Archive the full transcript to conversations/ before compaction.
  */
-function createPreCompactHook(): HookCallback {
+function createPreCompactHook(assistantName?: string): HookCallback {
   return async (input, _toolUseId, _context) => {
     const preCompact = input as PreCompactHookInput;
     const transcriptPath = preCompact.transcript_path;
@@ -172,7 +173,7 @@ function createPreCompactHook(): HookCallback {
       const filename = `${date}-${name}.md`;
       const filePath = path.join(conversationsDir, filename);
 
-      const markdown = formatTranscriptMarkdown(messages, summary);
+      const markdown = formatTranscriptMarkdown(messages, summary, assistantName);
       fs.writeFileSync(filePath, markdown);
 
       log(`Archived conversation to ${filePath}`);
@@ -252,7 +253,7 @@ function parseTranscript(content: string): ParsedMessage[] {
   return messages;
 }
 
-function formatTranscriptMarkdown(messages: ParsedMessage[], title?: string | null): string {
+function formatTranscriptMarkdown(messages: ParsedMessage[], title?: string | null, assistantName?: string): string {
   const now = new Date();
   const formatDateTime = (d: Date) => d.toLocaleString('en-US', {
     month: 'short',
@@ -271,7 +272,7 @@ function formatTranscriptMarkdown(messages: ParsedMessage[], title?: string | nu
   lines.push('');
 
   for (const msg of messages) {
-    const sender = msg.role === 'user' ? 'User' : 'Andy';
+    const sender = msg.role === 'user' ? 'User' : (assistantName || 'AssistantNameMissing');
     const content = msg.content.length > 2000
       ? msg.content.slice(0, 2000) + '...'
       : msg.content;
@@ -449,7 +450,7 @@ async function runQuery(
         },
       },
       hooks: {
-        PreCompact: [{ hooks: [createPreCompactHook()] }],
+        PreCompact: [{ hooks: [createPreCompactHook(containerInput.assistantName)] }],
         PreToolUse: [{ matcher: 'Bash', hooks: [createSanitizeBashHook()] }],
       },
     }