Method detectChunkTrend

src/core/search.ts:307–336

* Detect pattern trend from chunk content

(chunk: CodeChunk)

   * Detect pattern trend from chunk content
   */
  private detectChunkTrend(chunk: CodeChunk): {
    trend: 'Rising' | 'Stable' | 'Declining' | undefined;
    warning?: string;
  } {
    if (!this.patternIntelligence || chunk.content == null) {
      return { trend: undefined };
    }

    const content = chunk.content.toLowerCase();
    const { decliningPatterns, risingPatterns, patternWarnings } = this.patternIntelligence;

    // Check for declining patterns
    for (const pattern of decliningPatterns) {
      if (content.includes(pattern)) {
        return {
          trend: 'Declining',
          warning: patternWarnings.get(pattern)
        };
      }
    }

    // Check for rising patterns
    for (const pattern of risingPatterns) {
      if (content.includes(pattern)) {
        return { trend: 'Rising' };
      }
    }

    return { trend: 'Stable' };
  }

  private isTestFile(filePath: string): boolean {
    const normalized = filePath.toLowerCase().replace(/\\/g, '/');