refactor(lint): fix lint errors - unused imports and variables

- Add *.d.ts to oxlint ignore patterns
- Remove unused imports from test files
- Prefix unused variables with underscore
- Fix floating promises with void operator

Co-Authored-By: Claude <noreply@anthropic.com>

.oxlintrc.json

@@ -8,5 +8,5 @@
   "categories": {
     "correctness": "error"
   },
-  "ignorePatterns": ["src/canvas-host/a2ui/a2ui.bundle.js"]
+  "ignorePatterns": ["src/canvas-host/a2ui/a2ui.bundle.js", "**/*.d.ts"]
 }

src/response/discord-reply.ts

@@ -7,7 +7,6 @@
 import type { Message } from "@buape/carbon";
 
 import type { ReplyOptions, ReplyData, ReplyEmbed, QuoteMetadata, ReplyAuthor } from "./types.js";
-import { ResponseFormat } from "./types.js";
 
 /**
  * Discordリプライオプション拡張

src/review/codex-reviewer.test.ts

@@ -4,7 +4,6 @@
 
 import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
 import {
-  runCodexReview,
   parseCodexOutput,
   createReviewRequest,
   evaluateReview,

src/review/codex-reviewer.ts

@@ -6,7 +6,7 @@
 
 import { exec } from "child_process";
 import { promisify } from "util";
-import { mkdtempSync, writeFileSync, unlinkSync, rmSync, rmdirSync } from "node:fs";
+import { mkdtempSync, writeFileSync, unlinkSync, rmdirSync } from "node:fs";
 import { join } from "node:path";
 import type {
   CodexReview,

src/session/manager.test.ts

@@ -3,7 +3,6 @@
  */
 
 import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
-import { SessionStatus } from "./types.js";
 
 // DynamoDBモック
 vi.mock("@aws-sdk/client-dynamodb");

src/session/recovery.ts

@@ -69,7 +69,7 @@ export async function recoverPendingSessions(
   // 期限切れチェック
   const validSessions = sessions.filter((s) => {
     if (Date.now() > s.metadata.expiresAt * 1000) {
-      deleteSession(s.metadata.sessionId);
+      void deleteSession(s.metadata.sessionId);
       result.expired++;
       return false;
     }

src/theta/execute.ts

@@ -204,7 +204,7 @@ function withTimeout<T>(
       }, timeoutMs);
 
       // Promiseが解決したらクリアンアップ（キャンセルされても実行）
-      promise.finally?.(() => clearTimeout(timeoutId));
+      void promise.finally?.(() => clearTimeout(timeoutId));
     }),
   ]);
 }

src/theta/index.ts

@@ -63,7 +63,10 @@ import { ThetaPhase } from "./types.js";
 /**
  * 新しいθサイクル状態を作成する
  */
-export function createThetaCycleState(runId: string, options?: ThetaCycleOptions): ThetaCycleState {
+export function createThetaCycleState(
+  runId: string,
+  _options?: ThetaCycleOptions,
+): ThetaCycleState {
   return {
     runId,
     startTime: Date.now(),
@@ -127,7 +130,7 @@ export async function runThetaCycle<T = unknown>(
   const improveState = improveResult.state;
 
   // サマリー生成
-  const summary = generateCycleSummary(improveState);
+  const _summary = generateCycleSummary(improveState);
 
   // オプションのコールバック
   if (options?.onEvent) {

test/integration/agent-flow.test.ts

@@ -467,7 +467,7 @@ ${handoff.context}
       // Simulate θサイクル
       ["observe", "analyze", "decide", "allocate", "execute", "improve"].forEach(() => {
         // Simulate phase
-        1 + 1;
+        void 1;
       });
 
       const cycleEnd = Date.now();

test/unit/agent.test.ts

@@ -9,8 +9,8 @@
  * - Session-based agent selection
  */
 
-import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
-import { mkdirSync, rmSync, existsSync, writeFileSync } from "fs";
+import { afterEach, beforeEach, describe, expect, it } from "vitest";
+import { mkdirSync, rmSync, existsSync } from "fs";
 import { join } from "path";
 import { tmpdir } from "os";
 import { randomBytes } from "crypto";

test/unit/engine.test.ts

@@ -42,7 +42,6 @@ import {
   getModelRefStatus,
   resolveAllowedModelRef,
   resolveThinkingDefault,
-  type ModelRef,
   type ThinkLevel,
 } from "../../src/agents/model-selection.js";
 
@@ -864,7 +863,7 @@ describe("Engine Unit Tests", () => {
         },
       });
 
-      const primary = resolveAgentModelPrimary(cfg, "main");
+      const _primary = resolveAgentModelPrimary(cfg, "main");
       const fallbacks = resolveAgentModelFallbacksOverride(cfg, "main");
 
       // main agent has no model override, so it inherits from defaults

test/unit/mcp.test.ts

@@ -9,7 +9,7 @@
  * - Error handling and retries
  */
 
-import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+import { afterEach, beforeEach, describe, expect, it } from "vitest";
 
 // Mock MCP tool types
 interface MCPTool {