feat: Script Generator Phase 1+2 — backend, engine, API, frontend, template editor, parameter detector

Complete Script Generator feature including:

Backend:
- ScriptCategory, ScriptTemplate, ScriptGeneration models
- ScriptTemplateEngine with substitution, filters, sanitization
- CRUD + share API endpoints with permission checks
- Integration tests for permissions and sharing
- Migration 057 with AD User Management seed templates

Frontend — Script Library:
- Browse templates with category tabs and search
- Configure pane with parameter form and script generation
- Script preview with live substitution and copy/download
- scriptGeneratorStore Zustand store

Frontend — Template Editor:
- Full CRUD form with metadata, script body (Monaco Editor), parameters
- ParameterSchemaBuilder with visual builder + JSON toggle
- ScriptManagePage with routing and nav link

Frontend — Parameter Detector:
- Client-side PowerShell parameter detection engine
- Detects script-level param() blocks and variable assignments
- Type inference from PS type annotations and value patterns
- ParameterDetectorStepper one-by-one review UI with accept/skip

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/components/common/ErrorBoundary.tsx

@@ -1,5 +1,5 @@
 import * as Sentry from '@sentry/react'
-import { type ReactNode } from 'react'
+import { type ReactNode, useEffect, useRef } from 'react'
 import { Button } from '@/components/ui/Button'
 
 interface FallbackProps {
@@ -18,17 +18,20 @@ function isChunkLoadError(error: Error): boolean {
 }
 
 function DefaultFallback({ error, resetError }: FallbackProps) {
+  const reloadingRef = useRef(false)
+
   // Auto-reload on stale chunk errors (happens after deployments)
-  if (isChunkLoadError(error)) {
+  useEffect(() => {
+    if (!isChunkLoadError(error)) return
     const key = 'rf_boundary_chunk_reload'
     const lastReload = sessionStorage.getItem(key)
     const now = Date.now()
     if (!lastReload || now - Number(lastReload) > 10_000) {
       sessionStorage.setItem(key, String(now))
+      reloadingRef.current = true
       window.location.reload()
-      return null
     }
-  }
+  }, [error])
 
   return (
     <div className="flex min-h-[400px] flex-col items-center justify-center p-8">