# Regression Review Report

**Branch**: feat/ollama-runtime-integration-translate-proxy -> main
**Date**: 2026-05-04T00:21
**PR**: #157

## Issues in Your Changes (BLOCKING)

### CRITICAL

(none)

### HIGH

**Existing config files with `translate` key silently lose proxy configuration on upgrade** - `src/core/configuration.ts:298`
**Confidence**: 85%
- Problem: `loadAgentConfig()` reads `record.proxy` from the config JSON. Any user who previously configured `translate: "openai"` in their `~/.autobeat/config.json` will have that field silently ignored after this upgrade — `loadAgentConfig` no longer reads `record.translate`. The proxy will stop working with no error message or migration path.
- Impact: Users who had a working translation proxy setup via `translate: "openai"` will find it broken after upgrade. The system will silently fall back to direct Anthropic API calls (which will fail with the wrong API key/model), producing confusing downstream errors.
- Fix: Add a migration shim in `loadAgentConfig()` that reads `record.translate` as a fallback when `record.proxy` is absent. Optionally, `saveAgentConfig` could auto-migrate by writing the value under the new `proxy` key on next save. Alternatively, document the breaking change in CHANGELOG with a one-liner migration command: `beat agents config set claude proxy openai`.

```typescript
// In loadAgentConfig, after reading record.proxy:
const proxyRaw = record.proxy ?? record.translate; // backward compat
proxy: (PROXY_TARGETS as readonly string[]).includes(proxyRaw as string)
  ? (proxyRaw as ProxyTarget)
  : undefined,
```

## Issues in Code You Touched (Should Fix)

### MEDIUM

**Unused `type AgentConfig` import in proxy-manager.ts** - `src/translation/proxy/proxy-manager.ts:24`
**Confidence**: 82%
- Problem: The explicit `AgentConfig` type annotation was removed from line 66 (`const agentConfig: AgentConfig =` became `const agentConfig =`), but the `type AgentConfig` import on line 24 was not removed. It only appears in JSDoc comments now (lines 36, 48), which TypeScript does not track as usage.
- Impact: Dead import. No runtime effect (it's a type-only import erased at compile time), but inconsistent with the codebase's otherwise clean import hygiene. `noUnusedLocals` is currently false in tsconfig so this won't block compilation.
- Fix: Remove `type AgentConfig` from the import and update the JSDoc comments to use `{@link AgentConfig}` or inline the type name as plain text.

## Pre-existing Issues (Not Blocking)

(none)

## Suggestions (Lower Confidence)

- **MCP ConfigureAgent `translate` field not rejected with helpful error** - `src/adapters/mcp-adapter.ts:384` (Confidence: 70%) — An MCP client that sends `{ translate: "openai" }` (the old field name) will get no error — the field is simply ignored by Zod's schema (unknown keys stripped). A helpful migration hint could improve UX, but this is not a bug since Zod's default behavior is to strip unknown keys.

- **No test for backward-compatible config migration** - `tests/unit/implementations/agent-config.test.ts` (Confidence: 65%) — The `agent-config.test.ts` tests validate `proxy` and `runtime` save/load, and the "drop unknown proxy targets" test covers unknown values. However, there is no explicit test for the upgrade scenario where a config file has `translate: "openai"` and the system should either read it or warn about it. This is directly related to the HIGH finding above.

## Summary

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

**Regression Score**: 7/10
**Recommendation**: CHANGES_REQUESTED

### Rationale

The PR introduces two well-scoped features: (1) renaming `translate` to `proxy` for clarity, and (2) adding `ollama` runtime support. The implementation is thorough — the rename is complete across all source files, tests, MCP schemas, CLI commands, MCP instructions, and bootstrap logic. The ollama runtime integration follows the existing adapter pattern cleanly with proper exhaustive guards.

The sole blocking concern is backward compatibility for the `translate` -> `proxy` rename. Users with existing `config.json` files containing `translate: "openai"` will experience a silent regression: their proxy stops working with no error or migration guidance. This is a breaking change in user-facing configuration that needs either a migration shim in `loadAgentConfig` or explicit documentation as a breaking change with migration instructions.

All other aspects of the change are regression-safe:
- No exports were removed (old names replaced with new names, all consumers updated)
- The `saveAgentConfig` key union was widened (additive, not breaking)
- The `AgentConfig` interface was modified additively (`proxy` replaces `translate`, `runtime` added)
- Bootstrap correctly skips proxy when runtime is set
- The exhaustive `never` guard in `resolveRuntime` protects against future runtime additions without handler code
- Test coverage is comprehensive: 11 new runtime tests, 3 new proxy config tests, 1 new bootstrap integration test
- Commit messages accurately match implementation
