[Feature] Embedded Search Results (Live Query Blocks)

[CodeWithInferno]

📋 Description

Add support for embedded search result blocks that auto-update when matching notes change, similar to Dataview queries in Obsidian.

🎯 Goal

Allow users to create dynamic note sections that display search results inline, automatically updating as the workspace changes.

✨ Use Cases

1. Dashboard Pages

# My Dashboard

## Recent Work Notes
```query
tag:#work modified:last-7-days

High Priority Tasks

[ ] tag:#urgent

### 2. Project Indexes
```markdown
# Project X

## All Related Notes
```query
tag:#project-x OR [[Project X]]

### 3. Content Collections
```markdown
# Reading List

```query
tag:#book status:unread

## 🔧 Implementation

### Phase 1: Basic Search Queries

```javascript
// src/core/search/QueryBlock.jsx
const QueryBlock = ({ query }) => {
  const [results, setResults] = useState([]);
  
  useEffect(() => {
    const search = async () => {
      const matches = await searchEngine.query(query);
      setResults(matches);
    };
    
    search();
    
    // Re-run when workspace changes
    const unsubscribe = workspaceEvents.on('file-changed', search);
    return unsubscribe;
  }, [query]);
  
  return (
    <div className="query-results">
      {results.map(result => (
        <QueryResultItem key={result.path} result={result} />
      ))}
    </div>
  );
};

Phase 2: Advanced Query Syntax

Support operators:

• tag:#work - Filter by tag
• modified:last-7-days - Time-based filters
• folder:Projects - Folder filters
• AND, OR, NOT - Boolean logic
• [ ] - Incomplete tasks only
• [x] - Completed tasks only

Phase 3: Display Options

```query
tag:#work
---
format: list | table | cards
sort: modified | created | title
limit: 10
show: title, preview, tags

## 📚 Similar Features

- **Obsidian Dataview**: Complex query language with tables
- **Logseq**: Live query blocks with advanced queries
- **Notion**: Database views with filters

## 🎨 UI Design

Query blocks should:
- Have distinct visual style (border, background)
- Show "Live" indicator
- Display result count
- Allow edit query inline
- Show loading state during search

## ✅ Success Criteria

- [ ] Basic query syntax parser
- [ ] Live-updating results
- [ ] Multiple display formats
- [ ] Performance optimized (debounced)
- [ ] Edit query in place
- [ ] Export query results
- [ ] Tests added

## 🔗 Related Features

- Builds on existing search (#73)
- Works with Bases system (#159)
- Integrates with tags (#58)

## 📊 Priority

**MEDIUM** - Powerful feature but not critical, can be added after basic search is solid.