docs(readme): reconcile backend scanner telemetry and frontend core/settings drift

[google-labs-jules]

Generated by: .github/nightly-prompts/05-documentation-readme.md

Reasoning:

[Priority Queue Item]: Drift Reconciler (Step 1) triggered this run to reconcile parent README.md files for modules recently changed in today's nightly pipeline commits.
[Safety Checks]: Confirmed CleanStack Architecture ADR coherence and layers/nomenclature vocabulary compliance.
[Rationale]: Keep core-utils, Settings, and Headhunter Scanner READMEs synchronized with the latest variable naming standardization, mock spec refactoring, and telemetry logging updates.

Changes:

• [Backend/supabase/functions/headhunter-scanner/README.md]: Documented logging and telemetry standards, highlighting standard profiling logs usage of console.log to avoid false-positive severity-based telemetry alerts.
• [Frontend-PWA/src/core/utils/README.md]: Documented getKingLevelRow lookup helper and standardized king level row naming conventions in game.ts.
• [Frontend-PWA/src/features/settings/README.md]: Documented notification settings threshold actions and standard test parameter naming.
• [.github/nightly-logs/05-documentation-readme-coverage.log]: Appended 2026-07-24 stage 5 run record.
• [.github/nightly-logs/00-pr-history.md]: Registered T1 active record for today's run.

Verification:

• [Automated]: Full repository test suite passed with 1409 successful tests. Correctness and CleanStack Architecture ADR constraints validated via code review tool.
• [Automated/Audit]: Verified that all updated README statements perfectly match their respective code artifacts and naming conventions.

Log Updates:

• Updated .github/nightly-logs/05-documentation-readme-coverage.log

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PR created automatically by Jules for task 9101397594331605953 started by @AlbiDR

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[supabase]

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