## ADDED Requirements

### Requirement: Full-text search
The system SHALL provide a text input that filters knowledge entries in real-time as the user types. Filtering SHALL match against both metadata (title, tags) and the full body text of each knowledge entry.

#### Scenario: Search matches entry title
- **WHEN** user types "matt" in the search input
- **THEN** only entries whose title or body contains "matt" (case-insensitive) are displayed

#### Scenario: Search matches entry body text
- **WHEN** user types "三层加载" in the search input
- **THEN** all entries whose body text contains "三层加载" are displayed

#### Scenario: Search matches tag
- **WHEN** user types "Claude Code" in the search input
- **THEN** all entries tagged with "Claude Code" are displayed, along with entries mentioning it in body text

#### Scenario: No results found
- **WHEN** user types a keyword that matches no entry
- **THEN** the system SHALL display a "没有找到相关条目" (no results) message

#### Scenario: Clearing search restores all entries
- **WHEN** user clears the search input
- **THEN** all entries are displayed again in their original order (date descending)

#### Scenario: Search is case-insensitive
- **WHEN** user types "CLAUDE" or "claude" or "Claude"
- **THEN** the system SHALL return the same results regardless of case

### Requirement: Highlight matched text
The system SHALL visually highlight the portion of text that matched the search query in each displayed result.

#### Scenario: Single word match
- **WHEN** user searches for "skill" and an entry title is "Matt Pocock Skills"
- **THEN** the word "Skills" in the title is visually highlighted

#### Scenario: Multi-word query
- **WHEN** user searches for "ai agent" (two words)
- **THEN** entries containing both words are prioritized and matched text is highlighted