Clean up unused logging infrastructure

.changeset/cleanup-unused-logging.md

@@ -0,0 +1,5 @@
+---
+'@cloudflare/sandbox': patch
+---
+
+Remove unused logging infrastructure (getLogger, runWithLogger) that was never called

CLAUDE.md

@@ -331,9 +331,22 @@ shared package for consistency across the SDK.
 
 ### Logging
 
-- Centralized logger from `@repo/shared`
-- Structured logging with component context
-- Configurable via `SANDBOX_LOG_LEVEL` and `SANDBOX_LOG_FORMAT` env vars
+**Pattern**: Explicit logger passing via constructor injection throughout the codebase.
+
+```typescript
+class MyService {
+  constructor(private logger: Logger) {}
+
+  async doWork() {
+    const childLogger = this.logger.child({ operation: 'work' });
+    childLogger.info('Working', { context });
+  }
+}
+```
+
+**Configuration**: `SANDBOX_LOG_LEVEL` (debug|info|warn|error) and `SANDBOX_LOG_FORMAT` (json|pretty) env vars, read at startup.
+
+**Testing**: Use `createNoOpLogger()` from `@repo/shared` in tests.
 
 ### Session Management
 

packages/sandbox-container/src/config.ts

@@ -1,20 +1,3 @@
-/**
- * Log level for the sandbox container.
- *
- * Default: info
- * Environment variable: SANDBOX_LOG_LEVEL
- */
-const SANDBOX_LOG_LEVEL = process.env.SANDBOX_LOG_LEVEL || 'info';
-
-/**
- * Log format for the sandbox container.
- *
- * Default: json
- * Set to "pretty" to enable colored, human-readable output.
- * Environment variable: SANDBOX_LOG_FORMAT
- */
-const SANDBOX_LOG_FORMAT = process.env.SANDBOX_LOG_FORMAT || 'json';
-
 /**
  * How long to wait for an interpreter process to spawn and become ready.
  * If an interpreter doesn't start within this time, something is fundamentally
@@ -82,8 +65,6 @@ const STREAM_CHUNK_DELAY_MS = 100;
 const DEFAULT_CWD = '/workspace';
 
 export const CONFIG = {
-  SANDBOX_LOG_LEVEL,
-  SANDBOX_LOG_FORMAT,
   INTERPRETER_SPAWN_TIMEOUT_MS,
   INTERPRETER_EXECUTION_TIMEOUT_MS,
   COMMAND_TIMEOUT_MS,