Method buildSection

src/mcp/tools.ts:3628–3650

(c: { start: number; end: number; hasSpine?: boolean; spineCallLine?: number })

      const OVERSIZE_SPINE_LINES = 200;
      const SPINE_WINDOW = 28; // lines each side of the next-hop call site
      const buildSection = (c: { start: number; end: number; hasSpine?: boolean; spineCallLine?: number }): string => {
        if (c.hasSpine && c.spineCallLine && (c.end - c.start + 1) > OVERSIZE_SPINE_LINES) {
          const call = c.spineCallLine;
          const winStart = Math.max(c.start, call - SPINE_WINDOW);
          const winEnd = Math.min(c.end, call + SPINE_WINDOW);
          const parts: string[] = [];
          // Signature head, only when it sits clearly above the window (else the
          // window already covers the method opening).
          const headEnd = Math.min(c.start + 4, winStart - 2);
          if (headEnd >= c.start) {
            const head = fileLines.slice(c.start - 1, headEnd).join('\n');
            parts.push(withLineNumbers ? numberSourceLines(head, c.start) : head);
          }
          const win = fileLines.slice(winStart - 1, winEnd).join('\n');
          parts.push(withLineNumbers ? numberSourceLines(win, winStart) : win);
          return parts.join(GAP_MARKER);
        }
        const startIdx = Math.max(0, c.start - 1 - contextPadding);
        const endIdx = Math.min(fileLines.length, c.end + contextPadding);
        const slice = fileLines.slice(startIdx, endIdx).join('\n');
        // startIdx is 0-based, so the slice's first line is line startIdx + 1.
        return withLineNumbers ? numberSourceLines(slice, startIdx + 1) : slice;
      };

      // Rank clusters for inclusion under the per-file cap. Entry-point
      // clusters come first: a cluster containing a query entry point