Add RPC-backed transaction history

[Jim8y]

Summary

• Route the wallet Records entry to an in-app transaction history page instead of sending users to the explorer.
• Load NEP-17 and NEP-11 transfers directly from RPC for the selected wallet address.
• Resolve token metadata in memory for readable asset/activity rows without adding local transaction storage.

Validation

• dotnet build OneGateApp/OneGateApp.csproj -f net10.0-android -p:AndroidSdkDirectory=/opt/homebrew/share/android-commandlinetools -p:EmbedAssembliesIntoApk=true
• dotnet build OneGateApp/OneGateApp.csproj -f net10.0-ios -p:RuntimeIdentifier=iossimulator-arm64 -p:CodesignKey=- -p:CodesignProvision=
• iOS and Android simulator screenshots will be posted in a PR comment before marking ready for review.

Notes

• Scope is intentionally limited to transaction history navigation and RPC-backed display.
• The page does not persist transaction history locally; it queries RPC on demand to avoid introducing a new record store.

[Jim8y]

Simulator validation completed for this PR.

Validation run:

• iOS build passed: dotnet build OneGateApp/OneGateApp.csproj -f net10.0-ios -p:RuntimeIdentifier=iossimulator-arm64 -p:CodesignKey=- -p:CodesignProvision= (3 existing NU1903 SQLite warnings, 0 errors).
• Android build passed: RuntimeIdentifiers=android-arm64;android-x64 dotnet build OneGateApp/OneGateApp.csproj -f net10.0-android -p:AndroidSdkDirectory=/opt/homebrew/share/android-commandlinetools -p:EmbedAssembliesIntoApk=true (9 existing NU1903 SQLite warnings, 0 errors).
• iOS Simulator: installed and launched on iPhone 17 Pro / iOS 26.5, launch returned PID 6358.
• Android Emulator: installed and launched on emulator-5554, created a temporary local test wallet by private-key import, opened Wallet -> History, and confirmed the RPC-backed empty transaction state rendered. App PID 11549, crash buffer empty.
• Sensitive mnemonic/private-key setup screens were not uploaded; only non-sensitive screenshots are attached.

Screenshots:

[Copilot]

Pull request overview

This PR adds an in-app, RPC-backed transaction history experience for the wallet, replacing the previous “Records” behavior that navigated users out to an external explorer. It queries NEP-17 and NEP-11 transfers on demand via RPC and resolves token metadata in-memory for display.

Changes:

• Routed Wallet “Records” tap to a new in-app TransactionHistoryPage (//wallet/transactions) and registered the Shell route.
• Implemented TransactionHistoryPage (UI + code-behind) to load NEP-17/NEP-11 transfers from RPC and render them as activity rows.
• Added new localized string keys for empty/error/retry transaction history states across all .resx files and updated Strings.Designer.cs.

Reviewed changes

Copilot reviewed 20 out of 21 changed files in this pull request and generated 15 comments.

Show a summary per file

File	Description
OneGateApp/Properties/Strings.resx	Adds transaction history empty/error/retry strings (neutral culture).
OneGateApp/Properties/Strings.de.resx	Adds transaction history strings for German locale.
OneGateApp/Properties/Strings.es.resx	Adds transaction history strings for Spanish locale.
OneGateApp/Properties/Strings.fr.resx	Adds transaction history strings for French locale.
OneGateApp/Properties/Strings.id.resx	Adds transaction history strings for Indonesian locale.
OneGateApp/Properties/Strings.it.resx	Adds transaction history strings for Italian locale.
OneGateApp/Properties/Strings.ja.resx	Adds transaction history strings for Japanese locale.
OneGateApp/Properties/Strings.ko.resx	Adds transaction history strings for Korean locale.
OneGateApp/Properties/Strings.nl.resx	Adds transaction history strings for Dutch locale.
OneGateApp/Properties/Strings.pt-BR.resx	Adds transaction history strings for Brazilian Portuguese locale.
OneGateApp/Properties/Strings.ru.resx	Adds transaction history strings for Russian locale.
OneGateApp/Properties/Strings.tr.resx	Adds transaction history strings for Turkish locale.
OneGateApp/Properties/Strings.vi.resx	Adds transaction history strings for Vietnamese locale.
OneGateApp/Properties/Strings.zh-Hans.resx	Adds transaction history strings for Simplified Chinese locale.
OneGateApp/Properties/Strings.zh-Hant.resx	Adds transaction history strings for Traditional Chinese locale.
OneGateApp/Properties/Strings.Designer.cs	Exposes new TransactionHistory* resource accessors.
OneGateApp/Pages/WalletPage.xaml	Changes “Records” tap to navigate in-app to transaction history route.
OneGateApp/AppShell.xaml.cs	Registers the new wallet/transactions Shell route.
OneGateApp/Pages/TransactionHistoryPage.xaml	Adds UI for list/empty/error/loading states with pull-to-refresh.
OneGateApp/Pages/TransactionHistoryPage.xaml.cs	Implements RPC transfer loading, token metadata caching, and row formatting.
OneGateApp/Models/TransactionHistoryItem.cs	Adds a simple UI model for transaction history rows.

Files not reviewed (1)

• OneGateApp/Properties/Strings.Designer.cs: Generated file

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[Jim8y]

Review feedback fixes pushed in c6ec0fc.

Validation after the update:

• Android: dotnet build OneGateApp/OneGateApp.csproj -f net10.0-android -c Debug -p:AndroidSdkDirectory=/opt/homebrew/share/android-commandlinetools -p:JavaSdkDirectory=/opt/homebrew/Cellar/openjdk@17/17.0.19/libexec/openjdk.jdk/Contents/Home -p:EmbedAssembliesIntoApk=true passed with existing SQLitePCLRaw NU1903 warnings only.
• Android emulator: installed with adb install --no-incremental, launched on emulator-5554, PID 14362, AndroidRuntime crash buffer empty.
• iOS: DEVELOPER_DIR=/Applications/Xcode-26.5.0.app/Contents/Developer dotnet build OneGateApp/OneGateApp.csproj -f net10.0-ios -c Debug -p:RuntimeIdentifier=iossimulator-arm64 -p:CodesignKey=- -p:CodesignProvision= -p:ProvisioningType=automatic passed with existing SQLitePCLRaw NU1903 warnings only.
• iOS Simulator: installed and launched on iPhone 17 Pro / iOS 26.5, PID 43940.

Screenshots:

[erikzhang]

I tested it, but the historical transaction records were not displayed.

[Jim8y]

Addressed Erik's latest review requests in 7d880da.

Changes:

• Transaction history now queries NEP-17 and NEP-11 transfer history with an explicit all-history time range: 0 through current UTC milliseconds. This avoids the transfer tracker defaulting to a recent-only window and hiding older wallet activity.
• Updated the empty-state copy to avoid implementation terminology. It now says transfers appear after they are available from the network instead of mentioning an RPC node.
• Applied the empty-state copy update across all localized resource files.

Validation:

• Verified the configured RPC endpoint accepts getnep17transfers/getnep11transfers with [address, 0, endTime] and returns the expected address/received/sent shape.
• git diff --check passed.
• Localized .resx key parity passed across all 15 resource files.
• Verified TransactionHistoryEmptyText values no longer mention RPC.
• Android build passed: dotnet build OneGateApp/OneGateApp.csproj -f net10.0-android -r android-arm64 ....
• iOS simulator build passed: dotnet restore/build OneGateApp/OneGateApp.csproj -f net10.0-ios -r iossimulator-arm64 ....

No screenshots were committed to the repository.

[erikzhang]

It still doesn't work.

[Jim8y]

Follow-up fix pushed in 615ce49.

Root cause:

• The transfer history query was using startTime = 0 for getnep17transfers / getnep11transfers.
• On the current public RPC, that returns empty arrays for addresses that do have transfer history.

Fix:

• Use a non-zero earliest transfer timestamp for both NEP-17 and NEP-11 history queries.

Verification:

• Address NN8tbpgAx8zm5BNJZEqvi71Rj2Z8LX2RHh now returns 5 NEP-17 received records with the fixed query range.
• git diff --check passed.
• Android build passed: net10.0-android, android-arm64.
• iOS simulator build passed: net10.0-ios, iossimulator-arm64.
• Android emulator install + launch passed on emulator-5554.
• iOS simulator install + launch passed on iPhone 17 Pro / iOS 26.5.

Screenshots were captured under /tmp/onegate-pr69-20260705/ and were not committed.

[Jim8y]

Update: switched account history loading to use indexed account transactions before falling back to transfer-only RPC data.

What changed:

• Primary source: OneGate Explorer JSON-RPC API at https://explorer.onegate.space/api, method GetRawTransactionByAddress, using the wallet script hash.
• Secondary fallback: N3Index REST API at https://api.n3index.dev/mainnet/accounts/{address}/transactions.
• Final fallback: existing node RPC getnep17transfers / getnep11transfers path.
• Added a 6s timeout per indexed source so a slow indexer does not block the page for the default HttpClient timeout.

Why:

• Standard Neo RPC only exposes NEP-17/NEP-11 transfer history by address.
• Full account transaction history requires an indexer.
• Verified NN8tbpgAx8zm5BNJZEqvi71Rj2Z8LX2RHh returns 7,530 account transactions from OneGate Explorer when queried by script hash 0x9fb28bdacfaa7fcc0a4d660d0dc990b0e7d46118.

Validation:

• git diff --check
• Android build: dotnet build OneGateApp/OneGateApp.csproj -f net10.0-android -r android-arm64 ... passed.
• iOS simulator build: dotnet restore ... -p:TargetFramework=net10.0-ios -r iossimulator-arm64 plus dotnet build ... -f net10.0-ios -r iossimulator-arm64 --no-restore ... passed.
• iOS simulator install/launch passed on iPhone 17 Pro / iOS 26.5.
• Android emulator install/launch passed on emulator-5554.

Screenshots captured outside the repo:

• /tmp/onegate-pr69-indexer-20260705/ios-launch.png
• /tmp/onegate-pr69-indexer-20260705/android-launch-after.png

Note: build warnings are the existing SQLitePCLRaw NU1903 advisory warnings; no new warnings were introduced by this change.

[Jim8y]

Follow-up update pushed in 827bf1e.

Change:

• Removed the node RPC transfer fallback from transaction history.
• The page now only uses bounded indexed account history sources:
  • OneGate Explorer: GetRawTransactionByAddress with Limit=50, Skip=0.
  • N3Index fallback: /accounts/{address}/transactions?limit=50&offset=0.
• No getnep17transfers / getnep11transfers fallback remains, because those RPC methods do not provide a count-based latest-50 query and would require fetching an unbounded time range.

Verification:

• OneGate Explorer test account response: 50 rows returned, totalCount=7533.
• N3Index test account response: 50 rows returned, paging limit=50, offset=0.
• Confirmed TransactionHistoryPage no longer references getnep17transfers, getnep11transfers, or RpcClient.
• git diff --check passed.
• Android build passed.
• iOS simulator build passed.
• iOS simulator install/launch passed.
• Android emulator install passed and app process was confirmed running.

Screenshots captured outside the repository:

• /tmp/onegate-pr69-limit-20260705/ios-launch-after.png
• /tmp/onegate-pr69-limit-20260705/android-launch-after.png

Note: the existing SQLitePCLRaw NU1903 warnings remain unrelated.

[Jim8y]

Current head already addresses the open transaction-history feedback.

Checked in this pass:

• ReadString uses typed JsonValue extraction before falling back to scalar formatting.
• Missing counterparty falls back to Unavailable instead of an asset hash.
• The unused InvertedBoolConverter resource is not present.
• TransactionHistory strings are translated across the existing locale files.

No additional commit was needed in this pass.