Harden and productize Read Between v4.2

[Roblis0n]

What changed

• fixed Windows non-UTF-8 validator output and expanded the real behavior test suite;
• removed false validator noise and replaced calendar/attempt quotas with event-bound evidence and stop conditions;
• rewrote bilingual onboarding with exact install and $read-between invocation, proof preview, limits, and three synthetic worked examples;
• added project-specific community health files, Codex UI/plugin metadata, and a coherent privacy-first visual family;
• repaired structured-memory privacy controls: pause blocks writes, resume restores them, undo reverses the latest reversible record transactionally, forget cascades all object data/audit, and destroy removes the store;
• added Windows PowerShell 5.1 parsing/smokes for all eight scripts;
• added a deterministic Git-index plugin builder with staged full/runtime/PowerShell and schema validation.

Why

The prior Windows CI failure, relationship-threshold drift, and memory-store behavior could undermine both reproducibility and high-sensitivity privacy promises.

User impact

Users now get evidence-aware guidance without mind-reading or manipulation, event-bound next actions, safety-first routing, honest privacy controls, reproducible examples, and an installable plugin artifact.

Validation

• python -X utf8 -B -m unittest discover -s scripts/tests -p "test_*.py" -v — 26/26 passed on the final branch
• Ubuntu and Windows GitHub Actions passed on the release-ready head
• full/runtime validators and the PowerShell contract passed
• eight PowerShell scripts parsed in Windows PowerShell 5.1; redaction and memory smokes passed
• independent pause/resume/undo/forget/migration/destroy behavior checks passed
• root and packaged official Codex skill/plugin validators passed
• two 102-file builds produced identical tree metadata and identical ZIP bytes
• all tracked Markdown links, image checks, and diff checks passed