fix: remove unused safeChannel import + apply Prettier formatting

ESLint flagged 'safeChannel' as defined but never used in engine.ts —
removed from the import. Four files reformatted to satisfy CI format:check.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: sharon77242

packages/agent/src/diagnostic-agent.ts

@@ -5,10 +5,7 @@ import {
   type RuntimeMonitorOptions,
   type ProfilerEvent,
 } from "./profiling/runtime-monitor.ts";
-import {
-  InstrumentationEngine,
-  type InstrumentationOptions,
-} from "./instrumentation/engine.ts";
+import { InstrumentationEngine, type InstrumentationOptions } from "./instrumentation/engine.ts";
 import { MetricsAggregator, type AggregatorEvent } from "./export/aggregator.ts";
 import { OTLPExporter, type ExporterConfig } from "./export/exporter.ts";
 import { EntropyChecker } from "./sanitization/entropy-checker.ts";
@@ -60,10 +57,7 @@ import { writeExpirySignal } from "./licensing/expiry-signal.ts";
 import { GracefulShutdown, type GracefulShutdownOptions } from "./profiling/graceful-shutdown.ts";
 import { buildAgentProfile } from "./internal/profile-factory.ts";
 import { createQueryHandler } from "./internal/query-handler.ts";
-import {
-  installConsoleLogger,
-  type DebugListener,
-} from "./internal/console-logger.ts";
+import { installConsoleLogger, type DebugListener } from "./internal/console-logger.ts";
 
 // WeakMap-based private storage for license claims — avoids exposing internal field on agent
 const licenseClaims = new WeakMap<DiagnosticAgent, LicenseClaims>();

packages/agent/src/instrumentation/engine.ts

@@ -1,6 +1,6 @@
 import { EventEmitter } from "node:events";
 import { performance } from "node:perf_hooks";
-import { safeChannel, dcSubscribe, dcUnsubscribe } from "./safe-channel.ts";
+import { dcSubscribe, dcUnsubscribe } from "./safe-channel.ts";
 import { AstSanitizer } from "../sanitization/ast-sanitizer.ts";
 import { getCurrentContext } from "./correlation.ts";
 

packages/agent/src/internal/console-logger.ts

@@ -92,7 +92,9 @@ export function installConsoleLogger(
       };
       const hints = ev.suggestions?.map((s) => s.message).join(" | ");
       const suffix = hints ? `\n  ⚠ ${hints}` : "";
-      console.log(`${prefix} QUERY   [${ev.durationMs.toFixed(1)}ms] ${ev.sanitizedQuery}${suffix}`);
+      console.log(
+        `${prefix} QUERY   [${ev.durationMs.toFixed(1)}ms] ${ev.sanitizedQuery}${suffix}`,
+      );
     });
     add("http", (r) => {
       const ev = r as { method: string; url: string; statusCode?: number; durationMs: number };

packages/agent/src/internal/query-handler.ts

@@ -39,10 +39,9 @@ export function createQueryHandler(deps: QueryHandlerDeps): (traced: TracedQuery
     if (adaptiveSampler && !adaptiveSampler.shouldSample("query")) return;
 
     // 2. Query analysis — enrich with fix suggestions
-    const enriched =
-      queryAnalyzer
-        ? { ...traced, suggestions: queryAnalyzer.analyze(traced.sanitizedQuery) }
-        : traced;
+    const enriched = queryAnalyzer
+      ? { ...traced, suggestions: queryAnalyzer.analyze(traced.sanitizedQuery) }
+      : traced;
 
     // 3. Slow query monitor — driver may be absent for manual traceQuery() calls
     if (slowQueryMonitor) {
@@ -56,7 +55,11 @@ export function createQueryHandler(deps: QueryHandlerDeps): (traced: TracedQuery
         traced.traceId,
       );
       if (slow) {
-        aggregator.record("slow-query", slow.durationMs, slow as unknown as Record<string, unknown>);
+        aggregator.record(
+          "slow-query",
+          slow.durationMs,
+          slow as unknown as Record<string, unknown>,
+        );
         emit("slow-query", slow);
       }
     }

packages/agent/tests/analysis/static-scanner.test.ts

@@ -8,10 +8,7 @@ import type { ScanResult } from "../../src/analysis/types.ts";
 // tsconfig.json. Using process.cwd() (the full agent project) is fragile
 // because the agent's tsconfig includes tests/, so any TS issue introduced
 // in ANY test file would cause this assertion to fail non-deterministically.
-const CLEAN_FIXTURE_DIR = join(
-  import.meta.dirname,
-  "../fixtures/static-scanner-clean",
-);
+const CLEAN_FIXTURE_DIR = join(import.meta.dirname, "../fixtures/static-scanner-clean");
 
 describe("StaticScanner", () => {
   it("should run TypeScript scan and return a ScanResult", async () => {