[split-required] Split 58 monoliths across Python, Go, TypeScript (Phases 1-3)

Phase 1 — Python (klausur-service): 5 monoliths → 36 files
- dsfa_corpus_ingestion.py (1,828 LOC → 5 files)
- cv_ocr_engines.py (2,102 LOC → 7 files)
- cv_layout.py (3,653 LOC → 10 files)
- vocab_worksheet_api.py (2,783 LOC → 8 files)
- grid_build_core.py (1,958 LOC → 6 files)

Phase 2 — Go (edu-search-service, school-service): 8 monoliths → 19 files
- staff_crawler.go (1,402 → 4), policy/store.go (1,168 → 3)
- policy_handlers.go (700 → 2), repository.go (684 → 2)
- search.go (592 → 2), ai_extraction_handlers.go (554 → 2)
- seed_data.go (591 → 2), grade_service.go (646 → 2)

Phase 3 — TypeScript (admin-lehrer): 45 monoliths → 220+ files
- sdk/types.ts (2,108 → 16 domain files)
- ai/rag/page.tsx (2,686 → 14 files)
- 22 page.tsx files split into _components/ + _hooks/
- 11 component files split into sub-components
- 10 SDK data catalogs added to loc-exceptions
- Deleted dead backup index_original.ts (4,899 LOC)

All original public APIs preserved via re-export facades.
Zero new errors: Python imports verified, Go builds clean,
TypeScript tsc --noEmit shows only pre-existing errors.

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

admin-lehrer/components/ocr-pipeline/FineTuneSlider.tsx

@@ -0,0 +1,55 @@
+'use client'
+
+/** A single slider row for fine-tuning. */
+export function FineTuneSlider({
+  label,
+  value,
+  onChange,
+  min,
+  max,
+  step,
+  unit = '\u00B0',
+  radioName,
+  radioChecked,
+  onRadioChange,
+}: {
+  label: string
+  value: number
+  onChange: (v: number) => void
+  min: number
+  max: number
+  step: number
+  unit?: string
+  radioName?: string
+  radioChecked?: boolean
+  onRadioChange?: () => void
+}) {
+  return (
+    <div className="flex items-center gap-2">
+      {radioName !== undefined && (
+        <input
+          type="radio"
+          name={radioName}
+          checked={radioChecked}
+          onChange={onRadioChange}
+          className="w-3.5 h-3.5 accent-teal-500"
+        />
+      )}
+      <span className="text-xs text-gray-500 dark:text-gray-400 w-36 shrink-0">{label}</span>
+      <span className="text-xs text-gray-400 w-8 text-right">{min}{unit}</span>
+      <input
+        type="range"
+        min={min * 100}
+        max={max * 100}
+        step={step * 100}
+        value={Math.round(value * 100)}
+        onChange={(e) => onChange(parseInt(e.target.value) / 100)}
+        className="flex-1 h-1.5 bg-gray-200 rounded-lg appearance-none cursor-pointer dark:bg-gray-700 accent-teal-500"
+      />
+      <span className="text-xs text-gray-400 w-8">+{max}{unit}</span>
+      <span className="font-mono text-xs w-14 text-right tabular-nums">
+        {value >= 0 ? '+' : ''}{value.toFixed(2)}{unit}
+      </span>
+    </div>
+  )
+}