docs: fix incorrect 'cyclomatic' label in UnifiedFunctionMetrics JSDoc

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Summary

Fixes a documentation inaccuracy: the complexity field in UnifiedFunctionMetrics was documented as "cyclomatic complexity score" but this extension calculates cognitive complexity per the SonarSource specification.

Change

File: src/metricsAnalyzer/metricsAnalyzerFactory.ts

- /** The total cyclomatic complexity score for this function */
+ /** The total cognitive complexity score for this function */

Why it matters

The JSDoc is the main reference developers see when working with the UnifiedFunctionMetrics type. Using the wrong metric name ("cyclomatic" instead of "cognitive") would confuse anyone extending or integrating the extension.

Test Status

• ✅ npm run compile — no errors
• ✅ npm run lint — no warnings
• ⚠️ npm test — requires VS Code download; not available in sandboxed CI (known infrastructure limitation)

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Pull request overview

This PR corrects the JSDoc for UnifiedFunctionMetrics.complexity to accurately describe the metric produced by this VS Code extension (cognitive complexity per SonarSource), avoiding confusion for contributors and API consumers.

Changes:

• Update the UnifiedFunctionMetrics.complexity field documentation from “cyclomatic” to “cognitive” complexity.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 66.24%. Comparing base (cbdbe51) to head (474dc58).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #293   +/-   ##
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  Coverage   66.24%   66.24%           
=======================================
  Files           9        9           
  Lines        2604     2604           
  Branches      224      224           
=======================================
  Hits         1725     1725           
  Misses        878      878           
  Partials        1        1           

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