feat: add memo filter and enhance description filter with regex matching

- Add new memo filter to transaction page (searches :transaction/memo)
- Enhance existing description filter to use case-insensitive regex
- Both filters support wildcard matching via .* pattern
- Add e2e tests for filter functionality
- Update test data with memo fields

docs/superpowers/specs/2026-05-26-memo-description-filter-design.md

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+# Design: Memo and Description Filters for Transaction Page
+
+## Overview
+
+Add a new **Memo** filter to the transaction page and enhance the existing **Description** filter to support wildcard matching. Both filters should be case-insensitive.
+
+## Changes
+
+### 1. New Memo Filter
+
+- Add a text input field in the filter sidebar
+- Search against `:transaction/memo` attribute
+- Convert user input to regex pattern `.*input.*` with `(?i)` flag
+- Use Datomic `re-find` for matching
+- **Place this filter towards the end of the filter list** since regex matching is expensive
+
+### 2. Enhanced Description Filter
+
+- Change from `.contains` substring matching to `re-find` with `(?i)` flag
+- Wrap user input with `.*` on both ends: `.*input.*`
+- Maintains existing UI placement
+
+## Files Modified
+
+- `src/clj/auto_ap/ssr/transaction/common.clj`
+
+### Query Schema Changes
+
+Add `:memo` key to the `query-schema` map:
+```clojure
+[:memo {:optional true} [:maybe [:string {:decode/string strip}]]]
+```
+
+### Filter UI Changes
+
+Add memo filter input in the `filters` function, placed **after** the Amount filter and **before** the Linking filter.
+
+### Query Logic Changes
+
+In `fetch-ids`, add memo filter condition in the `cond->` chain (placed after other cheaper filters like description).
+
+### Description Filter Update
+
+Change the description filter from:
+```clojure
+'[(clojure.string/lower-case ?do) ?do2]
+'[(.contains ?do2 ?description)]]
+```
+
+To:
+```clojure
+'[(re-find ?description-regex ?do)]]
+```
+with args: `[(re-pattern (str "(?i).*" description ".*"))]`
+
+## Behavior
+
+- Both filters are optional (only applied when user enters text)
+- Both are case-insensitive
+- Both support substring matching (e.g., "rent" matches "Monthly Rent Payment")
+- Empty or whitespace-only input is ignored
+
+## Performance Considerations
+
+- Memo filter is placed towards the end of the filter chain since regex operations are more expensive than exact matches
+- Description filter also uses regex, but since it's an existing filter being enhanced, it stays in its current position in the query