Add AI travel day summaries via OpenRouter for skippers.

Skipper-only proxy with per-entry rate limiting, encrypted payload storage, CSV export, and Plausible tracking.

Co-authored-by: Cursor <cursoragent@cursor.com>

client/src/i18n/locales/da.json

@@ -371,6 +371,16 @@
       "share_csv": "CSV andel",
       "export_pdf": "Download PDF.",
       "exporting_pdf": "PDF er genereret...",
+      "ai_summary_title": "AI-resumé",
+      "ai_summary_empty": "Intet resumé endnu.",
+      "ai_summary_generate": "Generér resumé",
+      "ai_summary_regenerate": "Generér igen",
+      "ai_summary_generating": "Genererer…",
+      "ai_summary_attempts_remaining": "{{remaining}} af {{max}} forsøg tilbage",
+      "ai_summary_error": "AI-resumé mislykkedes. Prøv igen senere.",
+      "ai_summary_error_no_key": "Ingen OpenRouter API-nøgle konfigureret på serveren.",
+      "ai_summary_error_rate_limited": "Maksimalt antal genereringer nået for denne rejsedag.",
+      "ai_summary_error_forbidden": "Kun skipperen må generere AI-resuméer.",
       "photos_title": "Vedhæftede billeder (E2E-krypteret)",
       "photo_caption_label": "Fotobeskrivelse/etiket (valgfrit)",
       "photo_caption_placeholder": "f.eks. at sætte sejl nær indsejlingen til havnen",