Phase 6: Translate User Pages - exchange, trades, invites, profile

- Expand exchange.json with all exchange page strings (page, steps, detailsStep, bookingStep, confirmationStep, priceDisplay)
- Create trades.json translation files for es, en, ca
- Create invites.json translation files for es, en, ca
- Create profile.json translation files for es, en, ca
- Translate exchange page and all components (ExchangeDetailsStep, BookingStep, ConfirmationStep, StepIndicator, PriceDisplay)
- Translate trades page (titles, sections, buttons, status labels)
- Translate invites page (titles, sections, status badges, copy button)
- Translate profile page (form labels, hints, placeholders, messages)
- Update IntlProvider to load all new namespaces
- All frontend tests passing

frontend/locales/en/exchange.json

@@ -8,10 +8,70 @@
   },
   "direction": {
     "buy": "BUY BTC",
-    "sell": "SELL BTC"
+    "sell": "SELL BTC",
+    "buyShort": "Buy BTC",
+    "sellShort": "Sell BTC"
   },
   "transferMethod": {
     "onchain": "Onchain",
     "lightning": "Lightning"
+  },
+  "page": {
+    "title": "Exchange Bitcoin",
+    "subtitle": "Buy or sell Bitcoin with a 5% premium",
+    "viewExistingTrade": "View your existing trade →"
+  },
+  "steps": {
+    "details": "Exchange Details",
+    "booking": "Book Appointment",
+    "confirm": "Confirm"
+  },
+  "detailsStep": {
+    "paymentMethod": "Payment Method",
+    "required": "*",
+    "lightningThreshold": "Lightning payments are only available for amounts up to €{max}",
+    "amount": "Amount (EUR)",
+    "summaryBuy": "You buy {sats}, you sell {eur}",
+    "summarySell": "You buy {eur}, you sell {sats}",
+    "continueToBooking": "Continue to Booking"
+  },
+  "bookingStep": {
+    "yourExchange": "Your Exchange",
+    "edit": "Edit",
+    "buy": "Buy",
+    "sell": "Sell",
+    "receiveVia": "Receive via",
+    "sendVia": "Send via",
+    "selectDate": "Select a Date",
+    "existingTradeWarning": "You already have a trade booked on this day. You can only book one trade per day.",
+    "viewExistingTrade": "View your existing trade →",
+    "availableSlots": "Available Slots for",
+    "loadingSlots": "Loading slots...",
+    "noSlots": "No available slots for this date"
+  },
+  "confirmationStep": {
+    "appointment": "Appointment",
+    "edit": "Edit",
+    "confirmTrade": "Confirm Trade",
+    "time": "Time:",
+    "direction": "Direction:",
+    "eur": "EUR:",
+    "btc": "BTC:",
+    "rate": "Rate:",
+    "payment": "Payment:",
+    "receiveVia": "Receive via",
+    "sendVia": "Send via",
+    "booking": "Booking...",
+    "priceStale": "Price Stale",
+    "confirmBuy": "Confirm Buy",
+    "confirmSell": "Confirm Sell",
+    "back": "Back"
+  },
+  "priceDisplay": {
+    "loading": "Loading price...",
+    "market": "Market:",
+    "ourPrice": "Our price:",
+    "updated": "Updated",
+    "stale": "(stale)"
   }
 }

frontend/locales/en/invites.json

@@ -0,0 +1,17 @@
+{
+  "page": {
+    "title": "My Invites",
+    "subtitle": "Share your invite codes with friends to let them join",
+    "noInvites": "You don't have any invites yet.",
+    "noInvitesHint": "Contact an admin if you need invite codes to share.",
+    "available": "Available ({count})",
+    "availableHint": "Share these links with people you want to invite",
+    "used": "Used ({count})",
+    "revoked": "Revoked ({count})",
+    "copyLink": "Copy Link",
+    "copied": "Copied!",
+    "usedBy": "by {email}",
+    "usedStatus": "Used",
+    "revokedStatus": "Revoked"
+  }
+}

frontend/locales/en/profile.json

@@ -0,0 +1,33 @@
+{
+  "page": {
+    "title": "My Profile",
+    "subtitle": "Manage your contact information"
+  },
+  "form": {
+    "email": "Email",
+    "emailHint": "This is your login email and cannot be changed here.",
+    "invitedBy": "Invited By",
+    "invitedByHint": "The user who invited you to join.",
+    "readOnly": "Read only",
+    "contactDetails": "Contact Details",
+    "contactDetailsHint": "These are for communication purposes only — they won't affect your login.",
+    "contactEmail": "Contact Email",
+    "telegram": "Telegram",
+    "signal": "Signal",
+    "nostrNpub": "Nostr (npub)",
+    "saving": "Saving...",
+    "saveChanges": "Save Changes"
+  },
+  "messages": {
+    "loadError": "Failed to load profile",
+    "saveSuccess": "Profile saved successfully!",
+    "fixErrors": "Please fix the errors below",
+    "networkError": "Network error. Please try again."
+  },
+  "placeholders": {
+    "contactEmail": "alternate@example.com",
+    "telegram": "@username",
+    "signal": "username.01",
+    "nostrNpub": "npub1..."
+  }
+}

frontend/locales/en/trades.json

@@ -0,0 +1,16 @@
+{
+  "page": {
+    "title": "My Trades",
+    "subtitle": "View and manage your Bitcoin trades",
+    "loadingTrades": "Loading trades...",
+    "noTrades": "You don't have any trades yet.",
+    "startTrading": "Start trading",
+    "upcoming": "Upcoming ({count})",
+    "history": "History ({count})"
+  },
+  "trade": {
+    "rate": "Rate:",
+    "cancel": "Cancel",
+    "viewDetails": "View Details"
+  }
+}