refactor: wave 1 - extract leaf modules, rename catch-all files, split index.ts hooks

- Split 25+ index.ts files into hook.ts + extracted modules
- Rename all catch-all utils.ts/helpers.ts to domain-specific names
- Split src/tools/lsp/ into ~15 focused modules
- Split src/tools/delegate-task/ into ~18 focused modules
- Separate shared types from implementation
- 155 files changed, 60+ new files created
- All typecheck clean, 61 tests pass

src/hooks/delegate-task-retry/guidance.ts

@@ -0,0 +1,45 @@
+import { DELEGATE_TASK_ERROR_PATTERNS, type DetectedError } from "./patterns"
+
+function extractAvailableList(output: string): string | null {
+  const availableMatch = output.match(/Available[^:]*:\s*(.+)$/m)
+  return availableMatch ? availableMatch[1].trim() : null
+}
+
+export function buildRetryGuidance(errorInfo: DetectedError): string {
+  const pattern = DELEGATE_TASK_ERROR_PATTERNS.find(
+    (p) => p.errorType === errorInfo.errorType
+  )
+
+  if (!pattern) {
+    return `[task ERROR] Fix the error and retry with correct parameters.`
+  }
+
+  let guidance = `
+ [task CALL FAILED - IMMEDIATE RETRY REQUIRED]
+ 
+ **Error Type**: ${errorInfo.errorType}
+ **Fix**: ${pattern.fixHint}
+ `
+
+  const availableList = extractAvailableList(errorInfo.originalOutput)
+  if (availableList) {
+    guidance += `\n**Available Options**: ${availableList}\n`
+  }
+
+  guidance += `
+ **Action**: Retry task NOW with corrected parameters.
+ 
+ Example of CORRECT call:
+ \`\`\`
+ task(
+   description="Task description",
+   prompt="Detailed prompt...",
+   category="unspecified-low",  // OR subagent_type="explore"
+   run_in_background=false,
+   load_skills=[]
+ )
+ \`\`\`
+ `
+
+  return guidance
+}