Add oeo_9r_8d_base v1: canonical US 9-region v4 OEO input DB

[SutubraResearch]

Adds oeo_9r_8d_base v1 — the US 9-region, 8-day Temoa v4 input database produced by the v3→v4 migration.

• sha256: 44b6f7dd74a2484c0cddf3d2b57ad563f1fe321a2c41f5f1882418f18f5fbd86 (uploaded to staging)
• Solves on TemoaProject/temoa 9d26bd57 (unstable, 2026-07-10) — verified by a full 9-region myopic solve (Gurobi, 7 windows) reproducing the v3-Cost-Paper-validated results.
• Install note: use pyomo<6.10 — pyomo 6.10.x has a sparse_keys performance regression (~200× slower model builds at this scale; fix pending in Fix sparse_keys function to bypass slow keys() call unless needed Pyomo/pyomo#3971).
• Input-only: all output tables empty.
• Validated end-to-end against the v3 Cost Paper at $0 and $400/t CO₂; full change ledger (migration fixes, v3.1 source-data errata repairs, model updates) lives in the migration repo's CHANGELOG.

Summary by CodeRabbit

• New Features
  • Added manifest tracking for the oeo_9r_8d_base.sqlite release.
  • Recorded version 1 metadata, including integrity information and release history.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: f015e103-bf7e-46cc-a105-afa1b18e1fc1

📥 Commits

Reviewing files that changed from the base of the PR and between 5b7c945 and 17bda2b.

📒 Files selected for processing (1)

• manifest.json

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📝 Walkthrough

Walkthrough

Adds a v1 manifest entry for oeo_9r_8d_base.sqlite with storage, hash, timestamp, and pending-merge metadata.

Changes

Manifest registration

Layer / File(s)	Summary
Add database manifest entry manifest.json	Registers oeo_9r_8d_base.sqlite at version v1 with its history and associated metadata.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Suggested reviewers: github-actions[bot], particularlypythonicbs

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely matches the added oeo_9r_8d_base v1 manifest entry and database release.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/add-oeo-9r-8d-base

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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