docs: adopt anti-rot debt ledger and ADR directory

[alawein]

Adopt anti-rot artifacts

Adds docs/DEBT.md (technical-debt ledger) and docs/adr/ (Architecture Decision Records) per the alawein anti-rot primitives standard. See alawein/alawein docs/governance/anti-rot.md.

Docs-only change. Satisfies the new validate-repo-framework anti-rot check that requires these artifacts in code-archetype repos. Part of the Phase 7 fleet rollout.

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Note

Low Risk
Documentation-only additions and a heading punctuation change; no runtime, auth, or application code affected.

Overview
Adopts anti-rot governance docs so the repo can pass fleet validate-repo-framework checks: a tracked technical debt ledger (docs/DEBT.md) and an ADR area with copy-from template (docs/adr/0000-template.md).

Also adds canonical ops docs for QubeML as a notebooks-only repo: architecture (layout, optional pyproject extras, no runtime), deployment/release (merge to main, tags, Colab), and troubleshooting (extras installs, Colab limits, pytest).

AGENTS.md title punctuation only: em dash → hyphen in the heading.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: bc037640-f54c-4cc5-b24a-6dd5f9d448e4

📥 Commits

Reviewing files that changed from the base of the PR and between 612a859 and f551a01.

📒 Files selected for processing (6)

• AGENTS.md
• docs/DEBT.md
• docs/adr/0000-template.md
• docs/architecture.md
• docs/deployment.md
• docs/troubleshooting.md

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/anti-rot

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