Tier-1 reproducibility bundle (Record A): wCDM inferential-geometry — MCMC chains, frozen statistics, Python code, docker

**What is inside (after unzip)** Top-level folder **`wcdm_4d_tier1/`** mirroring the repository layout, including at least:- **`chains/`** — joint / low-*z* / high-*z* MCMC chains (HDF5).- **`data/`** — Tier-1 BAO and *f*σ₈ compilation inputs used with the frozen likelihood.- **`freeze/`** — protocol manifests, convergence and discordance tables, z-cut scan exports, **and** `ZENODO_RECORD_A_CHECKSUMS.sha256` (byte gate for listed artifacts).- **`likelihood/`**, **`plotting/`**, **`scripts/`**, **`theory/`**, **`docker/`** — full trees for reproduction and container build (pip pins under `docker/`; see `README.md` and `environment.yml`).- Root helpers **`chain_io.py`**, **`run_pipeline.py`** as in the file list.**Byte verification (recommended immediately after download)** From the unzipped `wcdm_4d_tier1` directory:```powershellpowershell -NoProfile -ExecutionPolicy Bypass -File scripts\verify_zenodo_record_a.ps1Expected: Checked: 26 Failed: 0 against freeze/ZENODO_RECORD_A_CHECKSUMS.sha256. Companion PDFs (human reading / citation layout)Publication-ready PDFs are not the arithmetic source of truth for this programme. See Zenodo Record B for the curated PDF bundle (manuscripts + supplements + SHA256 list):https://doi.org/10.5281/zenodo.20049205 External vendor bytesPantheon+ SH0ES public .dat / covariance files are documented in freeze/data_manifest.md §2; set TIER1_PANTHEON_DAT / TIER1_PANTHEON_COV or place files per README.md if you extend reruns beyond the bundled Tier-1 tables. KeywordsHubble tension; inferential geometry; cosmology; MCMC; wCDM; Pantheon+; BAO; reproducibility; docker