[GoGoKo699]

The owner selected Demkov–Ostrovskii (1988) as the single external teaching foundation. Readers now have a focused route from that book to the repository's existing result.

Changes:

• Add TUTORIAL.md with exact chapter locations, learning checkpoints and an honest access ledger: publisher contents plus the openings of Chapters 8–10, without claiming a complete reading.
• Add research/TUTORIAL_BRIDGE.md explaining the rank-one lattice model, essential binding, causal energy equation, physical return normalization, logarithmic matching and joint limits.
• Update README navigation, status, workspace guidance and the current work order.

The Hamiltonian, observable, coefficient, quantifiers, A–D proof files, original scientific/history inputs, tests, references, dependencies and verification policy are unchanged. Research papers retain their attribution role; the book is the one tutorial prerequisite. No manuscript drafting or outside contact is initiated.

Validation completed:

• Documentation integrity passed: 27 preserved inputs and 239 local links. Only six teaching/navigation files changed; candidate and merged tree are 10292ca2d353567f90377cb249aadcee25ad4681.
• All 60 supplementary checks passed locally and in both hosted runs.
• Fresh local verification passed all 5 suites / 28 groups / 272 controls after installing the already pinned dependencies in an isolated environment. Its only differences from the saved JSON are the Python-version metadata (3.12.14 versus 3.13.5); numerical fields agree.
• The initial local attempt is retained as failed: missing SymPy prevented five supplementary modules and suite 07 from importing. Its raw logs and failed REPORT.json were preserved, not replaced by the successful retry. Local evidence directory: tutorial-verification-2026-10-06 beside the checkout.
• PR run 37499372352 succeeded on test-merge b7d8937. All five scientific outputs were byte-identical to saved references. Artifact 11429083099, SHA256 9a2c3c58e896ec0e1e7a0f87a732cc215e0cd32f721b73d549e42939c42d8b96.
• Post-merge run 37500033734 succeeded on e4b3eec. All five scientific outputs were again byte-identical. Artifact 11429472081, SHA256 4d651ee48c52661c8b5016250c79adda7ef4995b4ff52d46c7dca281b4332096.
• Actual checkout identities, job steps, detailed suite logs and uploaded artifacts were inspected. Artifact retention ends 20 October 2026.

PR verification · Post-merge verification

The teaching formulas were checked against the existing A–D notes. This is internal editorial checking and execution evidence, not independent scientific review.