Fix: Remove broken getKlausurApiUrl and clean up empty lines

sed replacement left orphaned hostname references in story page
and empty lines in getApiBase functions.

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

admin-lehrer/app/(admin)/ai/rag-pipeline/useRagPipeline.ts

@@ -0,0 +1,147 @@
+'use client'
+
+import { useState, useEffect } from 'react'
+import type { TrainingJob, TrainingConfig, DatasetStats, DataSource } from './types'
+import {
+  MOCK_JOBS,
+  MOCK_STATS,
+  MOCK_DATA_SOURCES,
+  fetchJobs,
+  fetchDatasetStats,
+  createTrainingJob,
+  pauseJob,
+  resumeJob,
+  cancelJob,
+} from './api'
+
+export type TabType = 'dashboard' | 'architecture' | 'sources'
+
+export interface RagPipelineState {
+  activeTab: TabType
+  setActiveTab: (tab: TabType) => void
+  jobs: TrainingJob[]
+  stats: DatasetStats
+  dataSources: DataSource[]
+  showNewTrainingModal: boolean
+  setShowNewTrainingModal: (show: boolean) => void
+  selectedJob: TrainingJob | null
+  setSelectedJob: (job: TrainingJob | null) => void
+  isLoading: boolean
+  error: string | null
+  setError: (error: string | null) => void
+  handleStartTraining: (config: Partial<TrainingConfig>) => Promise<void>
+  handlePauseJob: (jobId: string) => Promise<void>
+  handleResumeJob: (jobId: string) => Promise<void>
+  handleCancelJob: (jobId: string) => Promise<void>
+}
+
+export function useRagPipeline(): RagPipelineState {
+  const [activeTab, setActiveTab] = useState<TabType>('dashboard')
+  const [jobs, setJobs] = useState<TrainingJob[]>([])
+  const [stats, setStats] = useState<DatasetStats>(MOCK_STATS)
+  const [dataSources] = useState<DataSource[]>(MOCK_DATA_SOURCES)
+  const [showNewTrainingModal, setShowNewTrainingModal] = useState(false)
+  const [selectedJob, setSelectedJob] = useState<TrainingJob | null>(null)
+  const [isLoading, setIsLoading] = useState(true)
+  const [error, setError] = useState<string | null>(null)
+
+  useEffect(() => {
+    async function loadData() {
+      setIsLoading(true)
+      try {
+        const [jobsData, statsData] = await Promise.all([
+          fetchJobs(),
+          fetchDatasetStats(),
+        ])
+        setJobs(jobsData)
+        setStats(statsData)
+        setError(null)
+      } catch (err) {
+        console.error('Failed to load data:', err)
+        setError('Verbindung zum Backend fehlgeschlagen')
+        setJobs(MOCK_JOBS)
+        setStats(MOCK_STATS)
+      } finally {
+        setIsLoading(false)
+      }
+    }
+    loadData()
+  }, [])
+
+  useEffect(() => {
+    const hasActiveJob = jobs.some(j => j.status === 'training' || j.status === 'preparing')
+    if (!hasActiveJob) return
+
+    const interval = setInterval(async () => {
+      try {
+        const updatedJobs = await fetchJobs()
+        setJobs(updatedJobs)
+      } catch (err) {
+        console.error('Failed to refresh jobs:', err)
+      }
+    }, 2000)
+
+    return () => clearInterval(interval)
+  }, [jobs])
+
+  const handleStartTraining = async (config: Partial<TrainingConfig>) => {
+    try {
+      await createTrainingJob(config)
+      const updatedJobs = await fetchJobs()
+      setJobs(updatedJobs)
+      setShowNewTrainingModal(false)
+    } catch (err) {
+      console.error('Failed to start training:', err)
+      setError(err instanceof Error ? err.message : 'Indexierung konnte nicht gestartet werden')
+    }
+  }
+
+  const handlePauseJob = async (jobId: string) => {
+    try {
+      await pauseJob(jobId)
+      const updatedJobs = await fetchJobs()
+      setJobs(updatedJobs)
+    } catch (err) {
+      console.error('Failed to pause job:', err)
+    }
+  }
+
+  const handleResumeJob = async (jobId: string) => {
+    try {
+      await resumeJob(jobId)
+      const updatedJobs = await fetchJobs()
+      setJobs(updatedJobs)
+    } catch (err) {
+      console.error('Failed to resume job:', err)
+    }
+  }
+
+  const handleCancelJob = async (jobId: string) => {
+    try {
+      await cancelJob(jobId)
+      const updatedJobs = await fetchJobs()
+      setJobs(updatedJobs)
+    } catch (err) {
+      console.error('Failed to cancel job:', err)
+    }
+  }
+
+  return {
+    activeTab,
+    setActiveTab,
+    jobs,
+    stats,
+    dataSources,
+    showNewTrainingModal,
+    setShowNewTrainingModal,
+    selectedJob,
+    setSelectedJob,
+    isLoading,
+    error,
+    setError,
+    handleStartTraining,
+    handlePauseJob,
+    handleResumeJob,
+    handleCancelJob,
+  }
+}