[High] Upgrade Remory integration to use Unix socket instead of CLI spawning

[randomm]

Problem

Current remory integration spawns CLI process for each operation (50-200ms overhead per call).

Research Findings

Remory supports direct Unix socket communication via JSON-RPC protocol:

• Daemon runs at ~/.remory/remory.sock
• 20-100ms after daemon warm-up vs 50-200ms CLI spawn
• Full async/await support
• Rich error handling

Solution

Replace CLI spawning with direct socket client:

```typescript
// packages/opencode/src/memory/remory.ts
import { UnixSocketClient } from './socket-client'

export const remory = {
async add(text: string, userId?: string, infer = false) {
const client = new UnixSocketClient(defaultSocketPath())
const response = await client.send({
method: 'add',
params: { text, user_id: userId, infer }
})
return response.result
}
}
```

Protocol

JSON-RPC 2.0 lite:
```json
{"id": "req-1", "method": "add", "params": {"text": "...", "user_id": "alice"}}
{"id": "req-1", "result": {"id": "mem-123", "event": "added"}}
```

Files

• Rewrite: packages/opencode/src/memory/remory.ts
• Create: packages/opencode/src/memory/socket-client.ts

Reference

Remory codebase at ../remory/ - see remory_daemon/ for protocol details.

Branch

claude/simplify-agentic-loop-2jRSP

[randomm]

COMPLETED: Unix socket client implemented at packages/opencode/src/memory/socket-client.ts with UnixSocketClient class, JSON-RPC communication, and test coverage.