The 490d Unified Chronology Knowledge Catalog is the public entry point for the revised, public-clean repository.
Its purpose is preservation. The repository records approximately 40 years of biblical-numerics, chronology, calendar, and comparative-source research in AI-readable canonical Markdown.
The current public-clean Markdown files are the canonical source layer. WordPress pages, HTML pages, PDFs, DOCX files, JSON, JSONL, RAG records, and Knowledge Graph records are derived publication or extraction layers.
Canonical raw Markdown source
The raw Markdown source index is here:
https://490d.com/source/490d-unified-chronology
That index links to:
- the 60 public-clean repository files;
- the current control documents;
- the publication manifest;
- the non-controlling historical archive.
Main catalog pages
Current control documents
The active reading controls for the repository are:
- 490d Repository Style Guide v2.5;
- Restart Capsule v11.15;
- Project Procedures v3.2;
- State Vocabulary Register v1.17.
These control documents define repository style, modal-state vocabulary, Machine Guards, arithmetic conventions, cross-file dependency boundaries, and state-safe retrieval rules.
Publication manifest
The current publication manifest is:
https://490d.com/source/490d-unified-chronology/manifest/490d_publication_manifest_v3_raw_urls.csv
The manifest records file IDs, filenames, planned WordPress slugs, raw Markdown URLs, publication status, archive pointers, and source-location metadata.
Historical archive
The Repository Change Archive is a non-controlling historical archive. It preserves revision history, pressure-test records, cleanup history, pointer-refresh history, and routed amendment material.
It is not the active control layer.
Reading rule
When interpreting the repository, use the current public-clean Markdown files together with the current Style Guide, Restart Capsule, Project Procedures, and State Vocabulary Register.
Do not treat older legacy pages, archived revision history, or prior raw-source forms as current controls unless a current file explicitly opens that source-history state.