U5: Build Archive Trace, living dossier reactions, and debrief

[breadback00-dev]

Parent: #16

Purpose

Make the player see themselves inside the case and understand the moral shape of their ending.

Scope

• Add an Archive Trace / Timeline of Self surface listing major player actions as case events.
• Make People & Entities cards react to pressure, consent choices, and evidence variants.
• Extend reveal/custody with a reflective debrief classifying identity treatment as preservation, appropriation, or dissolution.
• Keep debrief reflective rather than scolding, and keep canonical truth visible.

Target files

• Case Box 001 - The Creator Who Left But Kept Posting/index.html
• Case Box 001 - The Creator Who Left But Kept Posting/src/data/case-001.js
• Case Box 001 - The Creator Who Left But Kept Posting/src/scripts/horror-engine.js
• Case Box 001 - The Creator Who Left But Kept Posting/src/scripts/app.js
• Case Box 001 - The Creator Who Left But Kept Posting/src/styles/components.css
• Case Box 001 - The Creator Who Left But Kept Posting/docs/psychological-horror-playtest.md

Acceptance checks

• Trace records evidence review, tag application, verification, consent choice, reconstruction, and custody.
• Trace is session-local and reset clears it.
• Cast cards show visible reactions for invasive and protective paths.
• Final debrief names identity-treatment mode and key contributing choices.
• Debrief still includes stable canonical Mara/account truth.