feat(metrics): Clarify energy impact ownership and sampling continuity

[bigtomcat6]

Summary

This branch stabilizes Energy Impact sampling and ownership tracking to avoid stale or inconsistent UI state.

• close ownership gaps by associating samples with explicit process generations
• prevent broken sampling continuity after process churn and baseline resets
• preserve partial sampling state, ranking, and status across updates
• enforce monotonic sample timing to avoid discontinuities
• improve owner attribution, impact presentation, and localized text for affected states

How to test

• Not run automated checks in this task environment.
• Manual verification:
  • Open Energy Impact and verify process owner badges and state labels stay stable during frequent process start/stop.
  • Confirm sampling continuity by leaving the panel open during short spikes and checking no ownership jumps or ranking flicker.
  • Confirm localized labels remain consistent in supported locales (en/de/fr/ja/ko/zh-Hans/zh-Hant).

Release impact

• Type: Changed
• Release note:
  Energy Impact now keeps process ownership and sampling state coherent, reducing stale ownership entries and ranking instability.

Checklist

• I have seen this code, I have run this code, and I take responsibility for this code.
• PR title follows type(scope): Summary.
• Tests or a clear manual verification path are included.
• User-facing changes include release-note wording or Release impact: None.

[bigtomcat6]

@codex review

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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[chatgpt-codex-connector]

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Reviewed commit: 631841d317

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[bigtomcat6]

reivewed