fix(orchestrator): resolve all M6 remediation issues (#260-#269)

Addresses all 10 quality remediation issues for the orchestrator module:

TypeScript & Type Safety:
- #260: Fix TypeScript compilation errors in tests
- #261: Replace explicit 'any' types with proper typed mocks

Error Handling & Reliability:
- #262: Fix silent cleanup failures - return structured results
- #263: Fix silent Valkey event parsing failures with proper error handling
- #266: Improve error context in Docker operations
- #267: Fix secret scanner false negatives on file read errors
- #268: Fix worktree cleanup error swallowing

Testing & Quality:
- #264: Add queue integration tests (coverage 15% → 85%)
- #265: Fix Prettier formatting violations
- #269: Update outdated TODO comments

All tests passing (406/406), TypeScript compiles cleanly, ESLint clean.

Fixes #260, Fixes #261, Fixes #262, Fixes #263, Fixes #264
Fixes #265, Fixes #266, Fixes #267, Fixes #268, Fixes #269

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/orchestrator/src/queue/queue.module.ts

@@ -1,7 +1,7 @@
-import { Module } from '@nestjs/common';
-import { ConfigModule } from '@nestjs/config';
-import { QueueService } from './queue.service';
-import { ValkeyModule } from '../valkey/valkey.module';
+import { Module } from "@nestjs/common";
+import { ConfigModule } from "@nestjs/config";
+import { QueueService } from "./queue.service";
+import { ValkeyModule } from "../valkey/valkey.module";
 
 @Module({
   imports: [ConfigModule, ValkeyModule],