Include experimental session fields in metrics and make MetricsGrid resilient

[Spbd1]

Motivation

• Several optional experimental session fields (delayed reveal, revision flows, explanation frame, pre-reveal commitment, replay) were added but IndividualResults only forwarded a subset into calculateComputedResearchMetrics, causing some participant-facing metrics to be omitted or ambiguous for newer sessions.

Description

• Pass all relevant optional fields into calculateComputedResearchMetrics from IndividualResults, including preRevealSurveyRevisedAfterReveal, revisionAccess, preRevealRevision, revealTimingCondition, preRevealCommitment, explanationFrameCondition, costVisibilityCondition, and replayGame (in addition to the existing preRevealSurveyOriginal).
• Update MetricsGrid to accept the session and render reveal-timing, stand-by commitment, revision-access/attempt/use/deltas, explanation-frame, and replay-completion rows with safe fallbacks such as "Not assigned", "Not attempted", or "Not played" so old sessions render sensibly.
• Add small boolean/format helpers (yesNo, formatOptionalBoolean) used by the grid to clearly distinguish absent assignments from explicit No values, without changing any core research-calculation logic.

Testing

• Ran npm run typecheck and it completed successfully.
• Ran npm run lint and there were no ESLint warnings or errors.
• Ran npm run build and the Next.js production build completed successfully (compiled and generated static pages).

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Codex Task