# Consistency Review Report

**Branch**: feat/176-tmux-abstraction-layer -> main
**Date**: 2026-05-17

## Issues in Your Changes (BLOCKING)

### MEDIUM

**Mid-file imports in types.ts deviate from codebase convention** - `src/implementations/tmux/types.ts:181-182`
**Confidence**: 90%
- Problem: The `import type { AutobeatError }` and `import type { Result }` statements appear at line 181-182, after 177 lines of type definitions. Every other file in `src/core/` and `src/implementations/` places all imports at the top of the file (e.g., `src/core/interfaces.ts`, `src/core/domain.ts`, `src/implementations/task-repository.ts`).
- Fix: Move lines 181-182 to the top of `types.ts`, immediately after the module docstring:
```typescript
/**
 * Types and constants for the tmux abstraction layer
 * Pure type definitions -- no runtime logic
 */

import type { AutobeatError } from '../../core/errors.js';
import type { Result } from '../../core/result.js';

// --- Session configuration ---
```

**`getSessionEnvironment` is a public method not in the `TmuxSessionManager` interface** - `src/implementations/tmux/tmux-session-manager.ts:237`
**Confidence**: 85%
- Problem: `DefaultTmuxSessionManager.getSessionEnvironment()` is a public method with unit tests and integration tests, but it is not declared on the `TmuxSessionManager` interface in `types.ts`. In the existing codebase, all public repository/manager methods that are tested are part of their interface contract (e.g., `WorkerRepository.updateHeartbeat`, `TaskRepository.findByOrchestratorId`). This means consumers using the interface type will not see this method, and test doubles will not be required to implement it.
- Fix: Add `getSessionEnvironment` to the `TmuxSessionManager` interface in `types.ts`:
```typescript
export interface TmuxSessionManager {
  createSession(config: TmuxSessionConfig): Result<TmuxSessionResult, AutobeatError>;
  destroySession(name: string): Result<void, AutobeatError>;
  sendKeys(name: string, keys: string): Result<void, AutobeatError>;
  isAlive(name: string): Result<boolean, AutobeatError>;
  listSessions(): Result<TmuxSessionInfo[], AutobeatError>;
  /** Retrieve an environment variable from a session. Returns undefined if not set. */
  getSessionEnvironment(name: string, varName: string): Result<string | undefined, AutobeatError>;
}
```

## Issues in Code You Touched (Should Fix)

(none)

## Pre-existing Issues (Not Blocking)

(none)

## Suggestions (Lower Confidence)

- **Import extensions inconsistency in test files** - `tests/unit/implementations/tmux/*.test.ts` (Confidence: 65%) -- The new tmux test files use `.js` extensions on all relative imports (e.g., `from '../../../../src/core/errors.js'`), while the majority of existing test files in `tests/unit/implementations/` omit them (e.g., `from '../../../src/core/domain'`). Both work with the current build config, so this is not blocking, but it creates a split convention. The source files in `src/` consistently use `.js` extensions, so using them in tests is arguably more correct for ESM -- but it does not match the dominant test convention.

- **Manual try/catch vs tryCatch utility** - `src/implementations/tmux/tmux-hooks.ts`, `src/implementations/tmux/tmux-connector.ts` (Confidence: 60%) -- Repository implementations (`task-repository.ts`, `worker-repository.ts`, `loop-repository.ts`) use `tryCatch()`/`tryCatchAsync()` with `operationErrorHandler` for structured error wrapping. The tmux module uses manual try/catch with domain-specific error factories. This is a defensible choice (the tmux module is infrastructure, not a repository, and its error factories are more specific), but it is a different pattern from the rest of the codebase.

- **`TmuxConnector` class has no corresponding interface** - `src/implementations/tmux/tmux-connector.ts:113` (Confidence: 62%) -- The other three tmux classes (`DefaultTmuxSessionManager`, `DefaultTmuxHooks`, `DefaultTmuxValidator`) each implement an interface defined in `types.ts` and carry the `Default` prefix. `TmuxConnector` has neither an interface nor the prefix. This is consistent with some existing implementations (e.g., `EventDrivenWorkerPool` implements `WorkerPool` but `Database` does not implement an interface). The absence of an interface for `TmuxConnector` is fine if it is always used directly, but if it will need test doubles or alternative implementations in the future, an interface would be helpful.

## Summary

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

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

The tmux abstraction layer is well-aligned with the existing autobeat codebase patterns. Key consistency strengths:

- Result types used correctly throughout (never throws in business logic)
- Error factory functions follow the established pattern in `src/core/errors.ts` with proper ErrorCode enum entries, JSDoc comments, and context objects
- DI pattern matches codebase convention (constructor deps objects, injectable functions)
- Naming conventions (PascalCase classes, camelCase methods/functions, UPPER_CASE constants) are consistent
- `readonly` modifiers on immutable private fields match existing patterns
- Barrel `index.ts` properly separates type-only re-exports from value exports
- DESIGN DECISION JSDoc comments match the established documentation pattern
- Test structure (describe blocks, helper factories, Result assertion pattern with `if (!result.ok) return`) matches existing tests

Two MEDIUM blocking items should be addressed before merge: (1) imports at the top of `types.ts`, (2) adding `getSessionEnvironment` to the `TmuxSessionManager` interface.
