## What
Adds **saved filters** on the transactions page so users can name a set
of filters and reuse them later. The whole feature is gated behind a new
\`transaction-analysis\` Pennant feature flag (off by default).
## Why
Reusing the same filter combinations (e.g. "Japan trip", "Utilities") is
currently manual every time. This ports the saved-filters work from the
\`analysis-page\` branch, scoped down to **only** the transactions page
— the analysis screen and unrelated query changes from that branch are
intentionally left out.
## Changes
**Feature flag**
- \`App\Features\TransactionAnalysis\` — class-based flag, resolves
\`false\` by default.
- Shared to the frontend as \`features.transactionAnalysis\` and added
to the \`Features\` type.
**Backend (saved filters)**
- \`SavedFilter\` model (UUID, \`filters\` json cast, user belongsTo) +
migration + factory.
- \`Api\SavedFilterController\` — user-scoped index/store/update/destroy
under \`/api/saved-filters\`, ownership enforced with \`abort_unless\`.
- \`StoreSavedFilterRequest\` / \`UpdateSavedFilterRequest\` — name
unique per user, snake_case filter rules.
**Frontend**
- \`transaction-filter-serialization.ts\` —
serialize/deserialize/fingerprint between UI filter state and the
persisted snake_case shape.
- \`SavedFilters\` dropdown — load/save/update/delete with active +
dirty indicators.
- Integrated into the filter bar via an opt-in \`enableSavedFilters\`
prop, so it renders **only** on the transactions page (budgets/accounts
reuse the same component and stay unchanged). Render is also gated by
the feature flag.
**Filter bar UX**
- Split search + filters + saved searches onto their own row, separate
from the actions row (Categorize / Add transactions / columns), which
were getting cramped.
- On mobile, the text search moves into the filters popover.
## Reviewer notes
- Backend endpoints are **not** flag-gated; only the UI is, per the
request.
- Two-layer scoping: page opt-in prop **and** feature flag — flag off
means no UI anywhere.
- Translation keys fall back to the key (English); \`es.json\` entries
not added, matching the source branch.
## Testing
- \`tests/Feature/SavedFilterTest.php\` — 9 passing (auth, per-user
listing/uniqueness, ownership on update/delete).
- Pint, Prettier, ESLint clean. No new TypeScript errors introduced.
## Summary
- Add `GET /api/transactions?encrypted=true` endpoint for paginated
listing of encrypted transactions
- Add `PATCH /api/transactions/bulk` endpoint for batch-updating
decrypted transaction data (max 50 per request, bypasses model events)
- Add `useDecryptTransactions` hook that mirrors the existing account
name decryption flow: fetches encrypted transactions page-by-page,
decrypts `description`/`notes` client-side via Web Crypto API, sends
plaintext back and clears IVs
- Wire the hook into `AppSidebarLayout` so decryption runs automatically
when the user unlocks their encryption key
- Once all transactions (and accounts) are decrypted, the encryption key
button in the header disappears automatically
## Test plan
- [x] 11 Pest tests covering encrypted/plaintext filtering, pagination,
user scoping, bulk update, authorization, validation, nullable notes,
guest access, and no-model-events behavior
- [x] Manual: create encrypted transactions, unlock encryption key,
verify transactions get decrypted and the key button disappears
## Summary
- Store account names in plaintext instead of encrypting them
client-side. Encryption remains only for transaction descriptions and
notes.
- Existing encrypted account names are silently migrated when the user
unlocks their encryption key, via a new `useDecryptAccountNames` hook
that calls API endpoints to update each account.
- New `AccountName` component handles rendering both encrypted (legacy)
and plaintext accounts across the app.
## Test plan
- [x] Create a new account — name should be stored in plaintext
(`encrypted = false`, `name_iv = null`)
- [x] Unlock encryption key with existing encrypted accounts — they
should auto-migrate silently
- [x] After migration, verify accounts show `encrypted = false` in DB
and names are readable plaintext
- [x] Edit a migrated account — should work without encryption
- [x] Verify all account name displays work across dashboard, account
details, transactions, settings