docs: add design for cleaner history full-level search

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/plans/2026-04-17-cleaner-history-search-design.md

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+# Cleaner Operation History - Full-Level Search Design
+
+Date: 2026-04-17
+
+## Summary
+
+Add a full-level search feature to `CleanerOperationHistoryModal` that allows users to search across batches, orders, and materials by entering a single keyword. A new backend search API returns pre-joined three-level nested data, and the frontend renders it with keyword highlighting.
+
+## Interaction Design
+
+- **Search bar**: placed in the toolbar area, above the user filter chips, with a search icon and clear button.
+- **Trigger**: press Enter or click the search button (no per-keystroke requests).
+- **Search mode behavior**:
+  - Hides pagination controls (results are cross-page).
+  - Matching batches auto-expand with orders and materials displayed directly.
+  - Non-matching levels are hidden.
+  - Clearing the search box returns to normal browse mode.
+- **Highlighting**: matched text wrapped in `<mark>` with yellow background.
+- **Empty result**: shows "未找到匹配的记录" message.
+- **Result cap**: backend limits to 20 batches; if truncated, shows a hint.
+
+## Search Fields
+
+| Level | Searchable fields |
+|-------|-------------------|
+| Batch | `batchId`, `username`, `status` |
+| Order | `orderNumber`, `productionId` |
+| Material | `materialCode`, `materialName` |
+
+## Data Flow
+
+```
+renderer: window.electron.cleaner.searchHistoryRecords(query, options)
+  → preload: expose searchHistoryRecords
+    → main IPC handler: cleaner:searchHistoryRecords
+      → service/DAO: searchCleanerHistory(searchQuery, options)
+        → DB query (JOIN batches + orders + materials, LIKE filter)
+```
+
+### Input Types
+
+```typescript
+interface SearchCleanerHistoryOptions {
+  query: string
+  usernames?: string[]    // admin-only user scope
+  limit?: number          // default 20
+}
+```
+
+### Response Type
+
+```typescript
+interface CleanerHistorySearchResult {
+  batches: Array<{
+    batch: CleanerHistoryBatchStats
+    executions: ExecutionRecord[]
+    orders: Array<{
+      order: CleanerHistoryOrderRecord
+      materials: CleanerHistoryMaterialRecord[]
+    }>
+  }>
+  totalMatches: number
+}
+```
+
+## Frontend Changes
+
+1. **Modal top-level**: add `searchMode` / `searchQuery` state; switch data source between search API and paginated API.
+2. **Toolbar**: add search input with Search icon and clear button.
+3. **BatchItem**: accept optional pre-loaded `orders` + `materials` props; skip lazy-loading in search mode.
+4. **Highlight utility**: `highlightText(text: string, query: string)` wraps matches in `<mark>` tags.
+5. **Footer**: hide pagination in search mode; show "找到 X 个批次" + "清除搜索" button.
+
+## Backend Changes
+
+| File | Change |
+|------|--------|
+| `src/main/types/cleaner-history.types.ts` | Add `SearchCleanerHistoryOptions`, `CleanerHistorySearchResult` types |
+| DAO (cleaner history) | Add `searchCleanerHistory` method with SQL LIKE across joined tables |
+| Service (cleaner) | Add `searchHistoryRecords` method |
+| IPC handler | Register `cleaner:searchHistoryRecords` channel |
+| Preload | Expose `searchHistoryRecords` method |
+| `src/renderer/src/hooks/cleaner/types.ts` | Sync search result types |
+
+## Affected Files
+
+- `src/main/types/cleaner-history.types.ts` — new types
+- `src/main/services/database/cleaner-history-dao.ts` (or similar) — new search method
+- `src/main/services/cleaner-service.ts` (or similar) — new search method
+- `src/main/ipc/cleaner-handler.ts` (or similar) — new IPC channel
+- `src/preload/index.ts` (or cleaner-specific) — expose search API
+- `src/renderer/src/hooks/cleaner/types.ts` — sync types
+- `src/renderer/src/components/CleanerOperationHistoryModal.tsx` — search UI + state
+- `src/renderer/src/components/cleaner-history-highlight.ts` — highlight utility (new file)