refactor: remove ~70 low-value comments across 13 files

- Remove empty section markers (// === ... ===, // --- ... ---) that duplicate JSDoc or function names
- Remove "what" comments that restate the next line of code (e.g. // Save to disk, // Check for retryable patterns)
- Remove file-level descriptions that restate the filename (e.g. // Pure functions for formatting console output)
- Fix "Added by client" comment referencing implementation history → "Used for audit correlation"
- Preserve all WHY comments: error classification groups, billing/session limit explanations, ESM interop, exactOptionalPropertyTypes, mutex reasoning

src/temporal/shared.ts

@@ -3,15 +3,13 @@ import { defineQuery } from '@temporalio/workflow';
 export type { AgentMetrics } from '../types/metrics.js';
 import type { AgentMetrics } from '../types/metrics.js';
 
-// === Types ===
-
 export interface PipelineInput {
   webUrl: string;
   repoPath: string;
   configPath?: string;
   outputPath?: string;
   pipelineTestingMode?: boolean;
-  workflowId?: string; // Added by client, used for audit correlation
+  workflowId?: string; // Used for audit correlation
   sessionId?: string; // Workspace directory name (distinct from workflowId for named workspaces)
   resumeFromWorkspace?: string; // Workspace name to resume from
   terminatedWorkflows?: string[]; // Workflows terminated during resume
@@ -62,6 +60,4 @@ export interface VulnExploitPipelineResult {
   error: string | null;
 }
 
-// === Queries ===
-
 export const getProgress = defineQuery<PipelineProgress>('getProgress');