Accept isolated invoice issuance and reproducible PDF delivery

docs/proofs/invoice-concurrency.json

@@ -0,0 +1,7 @@
+{
+    "database": "sgf_tempo_test",
+    "overlapping_processes": 2,
+    "one_invoice_one_replay": true,
+    "numbers_distinct_in_shared_series": true,
+    "prior_documents_preserved": true
+}

docs/proofs/invoice-pdf-results.json

@@ -0,0 +1,8 @@
+{
+    "database": "sgf_tempo_test",
+    "renderer": "sgf-test-invoice-text-v2",
+    "pdf_sha256": "d90162f537ecdccb90a425f82c19642d7c7fb3eb3bf3d26e38289334fdf5caf0",
+    "repeated_download_identical": true,
+    "browser_and_pdf_share_document_lines": true,
+    "synthetic_only": true
+}

docs/proofs/invoice-test-results.json

@@ -0,0 +1,16 @@
+{
+  "database": "sgf_tempo_test",
+  "test_filter": "ServiceInvoiceTest|ServiceFiscalTest|ServiceCalculationTest|DocumentPreviewTest|InternalConfirmationTest|DatabaseSafetyTest",
+  "tests": 53,
+  "assertions": 924,
+  "passed": true,
+  "vite_build_passed": true,
+  "real_issuance_blocked": true,
+  "development_migration_applied": false,
+  "real_grants_applied": false,
+  "synthetic_browser_login": "real_session_with_csrf",
+  "final_pdf_pages": 1,
+  "long_text_pdf_pages": 4,
+  "pdf_notices_per_page": 2,
+  "browser_download_matches_preserved_pdf": true
+}