feat(plugins): add Wise plugin with multi-currency account grouping

[CWZMorro]

Summary

• Adds a Wise plugin that scrapes transactions from both the /all-transactions and /home pages
• Introduces TransactionGroup to support plugins returning multiple named account groups, with auto-wrapping for single-group plugins
• Wise transactions are automatically split into separate groups per currency (e.g. "Wise CAD", "Wise MYR") so each can be exported independently to a different ActualBudget account
• SyncAccountsButton now accepts a group prop and stages only that group's transactions before opening ActualBudget, enabling per-account export
• Correctly handles currency conversions: "To CAD" creates a deposit in the target currency and a withdrawal in the source; auto-converted purchases (e.g. paying CNY from MYR balance) are recorded only against the wallet currency

Test plan

• Open Wise /all-transactions — transactions appear split by currency group
• Open Wise /home — recent transactions are scraped correctly
• Perform "Export to X" on a single currency group — only that group's transactions are imported into ActualBudget
• Download CSV — all groups are flattened into one file
• Non-Wise plugins still work (single group, no regression)
• Conversion transactions ("To CAD") appear as deposit in CAD group and withdrawal in source currency group
• Auto-converted purchases appear only in wallet currency group (no phantom negative balances)

[Copilot]

Pull request overview

Adds a new Wise scraper plugin and extends the transaction model to support multiple named account groups (e.g., per-currency Wise balances), enabling per-group export to ActualBudget while keeping CSV export as a flattened list.

Changes:

• Added Wise plugin that scrapes /all-transactions with a /home fallback and groups transactions by currency.
• Introduced TransactionGroup and migrated the frontend storage/UI to use transactionStore.groups (auto-wrapping single-group plugins).
• Updated export flow to stage only a selected group’s transactions via exportGroup in Chrome storage, and updated CSV export to flatten groups.

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
packages/plugins/src/Wise.ts	New Wise scraper that returns multiple currency-based transaction groups.
packages/plugins/src/index.ts	Exports the new Wise plugin from the plugins package.
packages/frontend/src/config.ts	Registers Wise plugin and broadens scrape return type to allow grouped results.
packages/frontend/src/components/EmptyState/EmptyState.tsx	Adds Wise to the supported plugin list shown in the empty state.
packages/frontend/src/components/ActionButtons/SyncAccountsButton.tsx	Makes export per-group by writing exportGroup before opening ActualBudget.
packages/frontend/src/components/ActionButtons/DownloadCsvButton.tsx	Flattens grouped transactions before CSV export.
packages/frontend/src/components/ActionButtons/ActionButtons.tsx	Removes global export button (now per-group in App.tsx), leaving only CSV.
packages/frontend/src/App.tsx	Adapts UI/storage to grouped transactions and renders per-group tables + export buttons.
packages/core/src/types/openbanker.ts	Adds TransactionGroup, changes TransactionList to groups, adds exportGroup in storage type.
packages/chrome/src/background.ts	Exports CSV from either exportGroup (preferred) or flattened transactionStore.groups, then clears exportGroup.

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[james-yap]

Code Review

Overall this is a clean, well-structured feature. The TransactionGroup abstraction is solid and the Wise plugin handles a lot of date format edge cases nicely. Two issues need addressing before merge — see inline comments.

🔴 Warnings (should fix)

• Wise.ts — Negative amount regex may silently drop withdrawal transactions
• background.ts — exportGroup cleanup is fire-and-forget with no error handling

💡 Suggestions (non-blocking)

• App.tsx — Duck-typing for group detection is fragile long-term
• Wise.ts — Transactions with unparseable dates are still added (empty date string)
• Wise.ts — Silent catch (_) {} on base64 decode swallows errors

✅ Looks Good

• NGPF /g flag removal is a correct bugfix (stateful regex reuse bug)
• Write-then-open sequencing in SyncAccountsButton is properly async
• Per-group CSV fallback logic in background.ts is clean
• Date parsing covers a solid range of Wise format variants

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Reviewed by Hermes Agent

[james-yap]

Inline notes

packages/plugins/src/Wise.ts — parseAmount negative regex

cleaned still contains a leading - for withdrawals (e.g. - 150.00 CAD), but the regex only matches digits [\d,]+, so it silently drops those transactions. Consider:

const cleaned = rawText.replace(/^[+\-]\s*/, '').trim();

Then derive isDeposit from the stripped sign rather than just the positive span.

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packages/chrome/src/background.ts — fire-and-forget remove

chrome.storage[CHROME_STORAGE_STRATEGY].remove("exportGroup");

No callback / await. If the service worker is terminated before it completes, stale exportGroup persists and corrupts the next per-group export. The handler is already async, so:

await chrome.storage[CHROME_STORAGE_STRATEGY].remove("exportGroup");

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packages/frontend/src/App.tsx — duck-typing for group detection

if (Array.isArray(raw) && raw.length > 0 && 'account' in raw[0])

Works today, but breaks silently if Transaction ever gains an account field. Better to have all plugins return TransactionGroup[] and wrap flat-array plugins at the plugin layer.

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packages/plugins/src/Wise.ts — empty-date transactions

parseDate returns "" with a console.warn on failure, but the transaction is still added. Consider if (!date) continue; to avoid passing empty dates to ActualBudget.

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Reviewed by Hermes Agent

[james-yap]

great refactorization!

[james-yap]

Initial smoke tests are good, except for one regression on the extension UI