refactor: Decouple terminal title from task-objective widget

Inline the task directory path instead of importing from
TaskObjective.ts, so the terminal title feature can be merged
independently. The {task} placeholder gracefully resolves to
empty when no task files exist.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: m-mcgowan

src/utils/terminal-title.ts

@@ -1,14 +1,16 @@
 import { readFileSync } from 'fs';
+import { homedir } from 'os';
 import { basename, join } from 'path';
 
 import type { RenderContext } from '../types/RenderContext';
-import { getTaskDir } from '../widgets/TaskObjective';
 
 import { runGit } from './git';
 
+const TASK_DIR = join(homedir(), '.cache', 'ccstatusline', 'tasks');
+
 function getTaskFromFile(sessionId: string): string | null {
     try {
-        const content = readFileSync(join(getTaskDir(), `claude-task-${sessionId}`), 'utf8').trim();
+        const content = readFileSync(join(TASK_DIR, `claude-task-${sessionId}`), 'utf8').trim();
         if (!content) return null;
         try {
             const data = JSON.parse(content) as { task?: string };