feat: integrate invite API and improve notification handling

- Add invite code display and binding functionality via API
- Fix notification unread count sync on auth state change
- Improve notification mark read with server state validation
- Add auth state listener to trigger notification refresh
- Add YaoCoinConverter for coin-to-yao type conversion
- Remove YaoLegend from divination screens (UI cleanup)
- Abbreviate relation labels in yao detail view
- Add re-register notice to account delete screen
- Update 'coins' terminology to 'points' in localization
- Fix backend points consumption to only run in CHAT mode
- Add HttpxAuthNoiseFilter to suppress auth endpoint logging
- Fix notification static_schema import path
- Add test coverage for notification bloc error handling
- Update AGENTS.md page header rules and image handling
- Delete deprecated run-dev.sh script

apps/lib/l10n/app_en.arb

@@ -146,6 +146,7 @@
   "settingsDeleteAccountSubtitle": "Permanently delete your account and personal data",
   "settingsDeleteAccountWarningTitle": "Please confirm before deleting",
   "settingsDeleteAccountWarningBody": "After deletion, related data including profile, history, and points will be permanently removed and cannot be restored.",
+  "settingsDeleteAccountReRegisterNotice": "Important: if you delete and re-register with the same email, consumed points will not be reset or refunded.",
   "settingsDeleteAccountScopeProfile": "Profile and account information will be deleted",
   "settingsDeleteAccountScopeHistory": "Divination history records will be deleted",
   "settingsDeleteAccountScopePoints": "Points account and ledger records will be deleted",
@@ -295,7 +296,7 @@
   "questionTypeSearch": "Search",
   "questionTypeOther": "Other",
   "toastPleaseInputQuestion": "Please enter your question",
-  "toastCoinInsufficient": "Insufficient coins",
+  "toastCoinInsufficient": "Insufficient points",
   "divinationCostDialogTitle": "Confirm divination",
   "divinationCostDialogBody": "This run costs {cost} credits. Available balance: {balance} credits. Continue?",
   "@divinationCostDialogBody": {