Data Lake
The Data Lake is the raw landing zone. Every report — regardless of topic, format or maturity — is written here first, in a flat, chronologically ordered list. Nothing is filtered out. Search and sort tools let you find a document quickly without imposing a structure on the data.
- Schema-on-read: organisation is applied at query time, not at ingest.
- Append-only: items are added but never silently mutated.
- Single source of truth for downstream curation.
Data Vault
The Data Vault is the curated, categorised tier. Documents from the lake are placed into themed vaults — intelligence, strategy, technology, health, financial, the Continuum Times, operational and defensive — to make the corpus navigable by purpose.
- Stable categorisation that survives re-imports.
- Each vault is independently browsable.
- Designed for narrative use: pick a theme, get the dossier.
Architecture
CIDA — Constantine's Intelligent Data Architecture — is a Mayleven-only static archive. Documents are served as direct PDF downloads over HTTPS from Cloudflare's edge network. Access is gated by a client-side passphrase; the application does not transmit credentials over the network. Headers enforce X-Frame-Options: DENY, X-Content-Type-Options: nosniff, Referrer-Policy: no-referrer and a restrictive Permissions-Policy.
Mayleven access only. Unauthorised access is prohibited.