# Task ID: 101

**Title:** Implement mcpctl cache clear Command

**Status:** done

**Dependencies:** 98 ✓

**Priority:** low

**Description:** Add CLI command to clear the proxymodel cache, optionally filtered by project.

**Details:**

Create `src/cli/src/commands/cache-clear.ts`:

```typescript
import { Command } from 'commander';
import { readdir, unlink, rmdir } from 'fs/promises';
import { join } from 'path';

const CACHE_DIR = join(process.env.HOME ?? '', '.mcpctl', 'cache', 'proxymodel');

export function registerCacheClear(program: Command): void {
  program
    .command('cache clear')
    .description('Clear the proxymodel cache')
    .option('--project <name>', 'Clear only cache for a specific project')
    .option('--force', 'Skip confirmation', false)
    .action(async (opts) => {
      try {
        const files = await readdir(CACHE_DIR);
        const toDelete = opts.project 
          ? files.filter(f => f.includes(opts.project))
          : files;
        
        if (toDelete.length === 0) {
          console.log('No cache entries to clear');
          return;
        }
        
        if (!opts.force) {
          console.log(`This will delete ${toDelete.length} cache entries.`);
          // Add confirmation prompt
        }
        
        for (const file of toDelete) {
          await unlink(join(CACHE_DIR, file));
        }
        
        console.log(`Cleared ${toDelete.length} cache entries`);
      } catch {
        console.log('Cache directory does not exist');
      }
    });
}
```

**Test Strategy:**

CLI test: clears all entries without --project, clears filtered entries with --project, confirmation required without --force, --force skips confirmation.