Refine learning-os thesis around cognitive ledgers

[kmosoti]

Summary

Refines the learning-os thesis around a ledger-first model of learning.

Key changes:

• Treats the syllabus as a delivery schedule, not a complete cognitive model.
• Defines learning-os as a source-grounded cognitive ledger system.
• Adds prerequisite debt, failure modes, readiness evidence, and next-action planning to the project thesis.
• Updates the README demo target around prerequisite ledgers and failure-mode tracking.
• Expands the project brief with thesis commitments, ledger types, and MVP completion criteria.

Rationale

The current architecture already separates source, domain, outcome, learner, evidence, and planner layers. This update sharpens why those layers exist: to expose hidden prerequisite debt and map course materials to how a learner actually builds toward advanced topics.

Verification

• Compared thesis/cognitive-ledgers against main.
• Branch is ahead by 2 commits and behind by 0.
• Changed files: README.md, docs/00-project-brief.md.

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Record an ADR before making ledgers mandatory

This makes the prerequisite and failure-mode ledgers part of the “Non-Negotiable Architecture Principle,” which changes learner-state semantics and creates durable storage/modeling boundaries, but there is no matching ADR or decision-log update. The repo’s ADR guidance requires a full ADR for significant decisions, including learner-state semantics or expensive-to-change choices, so implementation cards will now see a mandatory architecture that has not passed the governance gate.

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