chore: 初始化 trans-form 项目脚手架

- 基于 grill-me Q1-Q61 决策
- Vitest 测试与 CI workflow
- middleware: parseFilters 核心实现
- component: Vue3 TransForm 基础组件 + Storybook

Co-authored-by: Cursor <cursoragent@cursor.com>

README.md

@@ -0,0 +1,62 @@
+# @windychen/trans-form-middleware
+
+Node.js ESM library that parses filter arrays emitted by `@windychen/trans-form-component` into structured conditions. **Does not generate SQL** — ORM adapters consume the output.
+
+## Install
+
+```bash
+npm install @windychen/trans-form-middleware
+```
+
+## Usage
+
+```js
+import { parseFilters } from '@windychen/trans-form-middleware';
+
+const componentOutput = [
+  { field: 'name', value: 'xx', query: 'EQ' },
+  { field: 'tags', value: 'a,b,c', query: 'IN', logic: 'OR' },
+];
+
+const filters = parseFilters(componentOutput, {
+  allowedFields: ['name', 'tags', 'status'],
+  mode: 'pass-through',
+  unknownField: 'error',
+  skipEmpty: false,
+});
+```
+
+See `DESIGN.md` for the full protocol and grill-me decisions (Q1–Q61).
+
+## API
+
+| Export | Description |
+|--------|-------------|
+| `parseFilters(conditions, options)` | Main parser |
+| `mapOperators(query, operatorMap?)` | Map EQ/GT/… to op symbols |
+| `toTree(flat)` | Nest flat array by logic |
+| `splitMultiValue(query, value)` | Parse comma-separated multi-values |
+| `DEFAULT_OPERATOR_MAP` | Built-in operator mapping |
+
+### parseOptions
+
+| Option | Default | Description |
+|--------|---------|-------------|
+| `allowedFields` | *(required)* | Whitelist of field names |
+| `mode` | `'pass-through'` | `'flat'` \| `'tree'` \| `'pass-through'` |
+| `unknownField` | `'error'` | `'error'` \| `'skip'` |
+| `strict` | `false` | Validate item shape |
+| `operatorMap` | `{}` | Merge/override operator mapping |
+| `skipFlags` | `['disabled','hidden']` | Skip items with these truthy flags |
+| `skipEmpty` | `false` | Skip items with `empty: true` |
+
+## Development
+
+```bash
+npm install
+npm test
+```
+
+## License
+
+MIT