fix: Restore all files lost during destructive rebase

A previous `git pull --rebase origin main` dropped 177 local commits,
losing 3400+ files across admin-v2, backend, studio-v2, website,
klausur-service, and many other services. The partial restore attempt
(660295e2) only recovered some files.

This commit restores all missing files from pre-rebase ref 98933f5e
while preserving post-rebase additions (night-scheduler, night-mode UI,
NightModeWidget dashboard integration).

Restored features include:
- AI Module Sidebar (FAB), OCR Labeling, OCR Compare
- GPU Dashboard, RAG Pipeline, Magic Help
- Klausur-Korrektur (8 files), Abitur-Archiv (5+ files)
- Companion, Zeugnisse-Crawler, Screen Flow
- Full backend, studio-v2, website, klausur-service
- All compliance SDKs, agent-core, voice-service
- CI/CD configs, documentation, scripts

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

admin-v2/components/ocr/index.ts

@@ -0,0 +1,13 @@
+/**
+ * OCR Components
+ *
+ * Components for OCR grid detection and visualization.
+ */
+
+export { GridOverlay, GridStats, GridLegend, getCellBlockNumber } from './GridOverlay'
+export type { GridCell, GridData, CellStatus } from './GridOverlay'
+
+export { CellCorrectionDialog } from './CellCorrectionDialog'
+
+export { BlockReviewPanel, BlockReviewSummary } from './BlockReviewPanel'
+export type { BlockStatus, MethodResult, BlockReviewData } from './BlockReviewPanel'