yusyus f214976ccd fix: apply review fixes from PR #309 and stabilize flaky benchmark test ...

Follow-up to PR #309 (perf: optimize with caching, pre-compiled regex,
O(1) lookups, and bisect line indexing). These fixes were committed to
the PR branch but missed the squash merge.

Review fixes (credit: PR #309 by copperlang2007):
1. Rename _pending_set -> _enqueued_urls to accurately reflect that the
   set tracks all ever-enqueued URLs, not just currently pending ones
2. Extract duplicated _build_line_index()/_offset_to_line() into shared
   build_line_index()/offset_to_line() in cli/utils.py (DRY)
3. Fix pre-existing bug: infer_categories() guard checked 'tutorial'
   but wrote to 'tutorials' key, risking silent overwrites
4. Remove unnecessary _store_results() closure in scrape_page()
5. Simplify parser pre-import in codebase_scraper.py

Benchmark stabilization:
- test_benchmark_metadata_overhead was flaky on CI (106.7% overhead
  observed, threshold 50%) because 5 iterations with mean averaging
  can't reliably measure microsecond-level differences
- Fix: 20 iterations, warm-up run, median instead of mean, threshold
  raised to 200% (guards catastrophic regression, not noise)

Ref: https://github.com/yusufkaraaslan/Skill_Seekers/pull/309

2026-03-14 23:39:23 +03:00

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