# Performance Review Report

**Branch**: feat/ollama-runtime-integration-translate-proxy -> main
**Date**: 2026-05-04

## Issues in Your Changes (BLOCKING)

### MEDIUM

**Redundant `loadAgentConfig` calls in `agentsConfigSet` — up to 4 synchronous file reads per invocation** - `src/cli/commands/agents.ts:189,210,218,222`
**Confidence**: 85%
- Problem: When `key === 'proxy'` and `value !== ''`, the function calls `loadAgentConfig(agent)` up to 3 separate times after the `saveAgentConfig` call (lines 189, 210, 222), each performing `existsSync` + `readFileSync` + `JSON.parse` on the same file. The new `runtime` path adds a 4th call (line 218). These are independent conditional blocks that each reload the config file from disk.
- Fix: Load the config once after save and reuse it across all warning checks:
```typescript
// After saveAgentConfig and success message (line 185):
const postSaveConfig = loadAgentConfig(agent);

// Then replace all subsequent loadAgentConfig calls with postSaveConfig:
if ((key === 'baseUrl' || key === 'apiKey' || key === 'proxy') && value !== '') {
  const effectiveBaseUrl = key === 'baseUrl' ? value : postSaveConfig.baseUrl;
  // ...
}

if (key === 'proxy' && value !== '') {
  if (!postSaveConfig.baseUrl) ui.note('proxy requires baseUrl to be set', 'Warning');
  if (!postSaveConfig.apiKey) ui.note('proxy requires apiKey to be set', 'Warning');
  if (!postSaveConfig.model) ui.note('proxy requires model to be set', 'Warning');
}

if (key === 'runtime' && value !== '') {
  if (postSaveConfig.proxy) ui.note('runtime and proxy are mutually exclusive...', 'Warning');
}
if (key === 'proxy' && value !== '') {
  if (postSaveConfig.runtime) ui.note('runtime and proxy are mutually exclusive...', 'Warning');
}
```

**Redundant `loadAgentConfig('claude')` in bootstrap proxy path** - `src/bootstrap.ts:412` + `src/translation/proxy/proxy-manager.ts:66`
**Confidence**: 82%
- Problem: Bootstrap calls `loadAgentConfig('claude')` at line 412, then when `claudeConfig.runtime` is falsy, calls `loadProxyConfig('claude')` which internally calls `loadAgentConfig('claude')` again (proxy-manager.ts:66). This results in two synchronous file reads of the same config file within the same code path. This is a pre-existing pattern that this PR makes slightly more visible by introducing the early `loadAgentConfig` call.
- Fix: Pass the already-loaded `claudeConfig` to `loadProxyConfig` instead of having it reload:
```typescript
// Option 1: Create a loadProxyConfigFromAgentConfig overload
const proxyConfig = claudeConfig.runtime ? null : loadProxyConfigFromAgentConfig(claudeConfig);

// Option 2: Refactor loadProxyConfig to accept optional AgentConfig
export function loadProxyConfig(provider: AgentProvider, agentConfig?: AgentConfig): ProxyConfig | null {
  if (provider !== 'claude') return null;
  const config = agentConfig ?? loadAgentConfig(provider);
  // ...
}
```

## Issues in Code You Touched (Should Fix)

(none)

## Pre-existing Issues (Not Blocking)

### LOW

**`isCommandInPath` uses synchronous `spawnSync('which')` in hot paths** - `src/core/agents.ts:212`
**Confidence**: 80%
- Problem: `isCommandInPath` calls `spawnSync('which', [command])` which forks a child process synchronously. In the new code this is called: (1) in `checkAgents` inside a loop for each agent with runtime set (agents.ts:101), and (2) in every `spawn()` call (base-agent-adapter.ts:241). The spawn path is the more concerning one since it blocks the event loop during process creation. However, this is pre-existing behavior (the function existed before this PR), and the new code does not change how frequently it is called in the spawn path -- it merely changes which binary name is checked.
- Impact: Low practical impact. The spawn path already does synchronous file I/O (`loadAgentConfig`) and the `spawnSync('which')` is bounded (one call per spawn, not in a loop). The CLI `checkAgents` path runs once and exits.

## Suggestions (Lower Confidence)

- **`saveAgentConfig` performs full read-modify-write cycle on config.json** - `src/core/configuration.ts:319` (Confidence: 65%) -- When setting `runtime`, a user may also set `model` in the same CLI session via sequential `beat agents config set` commands. Each call does `readFileSync` + `JSON.parse` + `writeFileSync`. Not a concern for CLI usage (single-digit calls), but worth noting if batch config updates are ever needed.

## Summary
| Category | CRITICAL | HIGH | MEDIUM | LOW |
|----------|----------|------|--------|-----|
| Blocking | 0 | 0 | 2 | 0 |
| Should Fix | 0 | 0 | 0 | 0 |
| Pre-existing | 0 | 0 | 0 | 1 |

**Performance Score**: 8/10
**Recommendation**: APPROVED_WITH_CONDITIONS

The new code introduces minimal performance overhead. The runtime resolution (`resolveRuntime`) is a pure in-memory lookup against a frozen const record -- negligible cost. The proxy skip logic in bootstrap (`claudeConfig.runtime ? null : ...`) is a fast boolean check that avoids unnecessary proxy startup. The two MEDIUM findings are about redundant synchronous file I/O in CLI paths, which are not hot paths but represent unnecessary work that is straightforward to consolidate. No N+1 queries, no memory leaks, no blocking I/O in request handlers, and no algorithmic issues detected.
