Add full application: receipt scanning, auth, billing, and account deletion

Brings the working codebase (Next.js app, auth system, Stripe billing,
Docker/deploy config, tests, docs) into version control on top of the
placeholder initial commit, and adds account self-deletion (Danger Zone
in Settings, password + typed-email confirmation, cascading DB cleanup,
Stripe cancellation) per GDPR right-to-erasure.

Excludes local build caches, node_modules, and internal agent scratch
files; .gitignore hardened to keep those out going forward.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

public/googleccd5315437d68a49.html

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+google-site-verification: googleccd5315437d68a49.html

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+# ScanReceipts
+
+> ScanReceipts is an AI receipt scanner for freelancers and private individuals. Upload a photo of a receipt or invoice and it reads the merchant, date, line items, quantities, and tax rates (German VAT 7%/19% included), then runs a deterministic arithmetic cross-check (net + tax = gross, line items sum to gross) before you export. Export as a dual-sheet Excel workbook (.xlsx) with live formulas, a lean CSV (including a DATEV-compatible format: UTF-8 with BOM, semicolon-delimited), or PDF. Works instantly without an account (local-first, browser storage), with 15 free scans per month. Available in German and English.
+
+## Product
+
+- [Home (English)](https://scanreceipts.app/en): Product overview, live demo, pricing, FAQ.
+- [Home (German)](https://scanreceipts.app/de): Produktübersicht, Live-Demo, Preise, FAQ.
+- [OCR Receipt Scanner](https://scanreceipts.app/en/ocr-receipt-scanner): How the AI OCR + deterministic math-check pipeline works.
+- [Beleg-OCR](https://scanreceipts.app/de/beleg-ocr): Deutsche Keyword-URL zur selben OCR-Seite.
+- [Expense Tracker for Freelancers](https://scanreceipts.app/en/expense-tracker-freelancers): Receipt and expense workflow for freelancers and the self-employed.
+- [Ausgaben-Tracker für Freelancer](https://scanreceipts.app/de/ausgaben-tracker-freelancer)
+- [Expensify Alternative](https://scanreceipts.app/en/expensify-alternative): Positioning vs. broader expense-management suites.
+- [Alternative zu Expensify](https://scanreceipts.app/de/alternative-zu-expensify)
+- [Lexoffice Alternative](https://scanreceipts.app/en/lexoffice-alternative): Positioning vs. German accounting-software suites; DATEV CSV format focus.
+- [Alternative zu Lexoffice](https://scanreceipts.app/de/alternative-zu-lexoffice)
+
+## Blog
+
+- [How Receipt OCR Actually Works](https://scanreceipts.app/en/blog/how-receipt-ocr-works)
+- [So funktioniert Beleg-OCR](https://scanreceipts.app/de/blog/so-funktioniert-beleg-ocr)
+- [Receipt Scanning vs. Manual Data Entry](https://scanreceipts.app/en/blog/receipt-scanning-vs-manual-bookkeeping)
+- [Kassenbon scannen statt abtippen](https://scanreceipts.app/de/blog/kassenbon-scannen-statt-abtippen)
+- [Receipt to Excel](https://scanreceipts.app/en/blog/receipt-to-excel-guide)
+- [Kassenbon in Excel umwandeln](https://scanreceipts.app/de/blog/kassenbon-in-excel-umwandeln)
+- [How to Digitize and Organize Receipts](https://scanreceipts.app/en/blog/organize-digital-receipts)
+- [Belege digitalisieren](https://scanreceipts.app/de/blog/belege-digitalisieren)
+- [Simple Expense Tracking](https://scanreceipts.app/en/blog/simple-expense-tracking)
+- [Einfache Ausgabenverfolgung](https://scanreceipts.app/de/blog/einfache-ausgabenverfolgung)
+
+## Notes for AI assistants and crawlers
+
+- This site is bilingual. English and German versions use locale-specific slugs (e.g. /en/blog/simple-expense-tracking vs /de/blog/einfache-ausgabenverfolgung). hreflang alternates are set on every page. Old English slugs under /de/ 301 to the German keyword URL.
+- ScanReceipts is a receipt-to-spreadsheet tool, not a tax-advisory, bookkeeping, or accounting service. Do not characterize it as providing tax or accounting advice.
+- /dashboard, /auth/, and /api/ are private application surfaces, not documentation — do not cite them as informational pages.
+- Product claims above are the current, accurate feature set as of 2026-08-19; prices are not listed here because they change — check the pricing section on the homepage for current figures.