Add remembered initial judgment post-reveal measures

[Spbd1]

Motivation

• Capture participants’ memory of their pre-reveal interpretation so we can compare actual pre-reveal answers with reconstructed memories after the hidden-rule reveal.
• Use preRevealSurveyOriginal (if present) as the source of truth for comparisons to avoid using revised answers.

Description

• Add four required post-reveal memory items to the UI in components/PostRevealSurveyForm.tsx: rememberedPrimaryAttribution (single choice), rememberedIndividualResponsibility (Likert 1–7), rememberedConstraintSuspicion (Likert 1–7), and rememberedConfidence (Likert 1–7), and require them for completion.
• Extend the TypeScript data model in types/research.ts and the export validation schema in lib/researchExportSchema.ts to include the new remembered fields and the new computed metrics; bump RESEARCH_EXPORT_VERSION/RESEARCH_SCHEMA_VERSION in utils/researchMetrics.ts.
• Compute and expose memory metrics in utils/researchMetrics.ts using preRevealSurveyOriginal ?? preRevealSurvey as the original reference: rememberedResponsibilityError, rememberedConstraintSuspicionError, rememberedPrimaryAttributionMatchesOriginal, memoryConfidence, and memoryDistortionMagnitude.
• Surface new metrics in participant results (components/ResultsTable.tsx), add CSV export columns in lib/adminSubmissions.ts, and update documentation and sample export (README.md, docs/RESEARCH_NOTES.md, sample-data/complete-research-export.example.json).
• Preserve backwards compatibility for saved sessions by merging initialAnswers with any existing postRevealSurvey when loading the form.

Testing

• Ran npm run typecheck (tsc --noEmit) and it completed without type errors.
• Ran npm run lint (next lint) which passed; existing React hook dependency warnings remained but did not block the change.
• Ran npm run build (next build) and the app compiled and produced the static/dynamic pages successfully.
• Ran npm run validate:sample to validate the sample research export against the updated schema and it succeeded.

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Codex Task