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Six-tier sovereignty matrix

The PointSav monorepo organises every directory by purpose, not by programming language or compile format. Each directory at the repository root belongs to one of six tiers — app-, asset-, moonshot-, os-, service-, or system- — identified by a fixed prefix. A contributor reading the prefix knows immediately what layer a directory operates at without opening a file. This article covers the six tiers, the decision rule for classifying new directories, the kebab-case constraint that makes the taxonomy portable across operating systems and container registries, and the legacy names the taxonomy supersedes.

The six tiers

Every directory at the monorepo root falls into one of the following tiers:

Tier Prefix Purpose Example components
1 — Application app- User-facing surfaces — the personality cartridges that define how a job looks and feels app-console-input, app-mediakit-marketing, app-orchestration-command
2 — Asset asset- Non-code resources — fonts, icons, 3D models, design tokens, brand assets asset-brand-pointsav, asset-brand-wcp
3 — Moonshot moonshot- Research and development experiments not yet promoted to production moonshot-gpu
4 — OS os- Operating-system compositions — the runtime containers that load other components os-console, os-totebox, os-orchestration
5 — Service service- Background business-logic daemons service-slm, service-content, service-email, service-people
6 — System system- Foundational technology — drivers, networking, foundation utilities system-foundation, system-driver-network, system-audit

The word "library" is explicitly retired as a category label. It describes how code is compiled, not what it does.

The rule of purpose

A new directory is classified by its purpose, not its format. The decision is short:

Question Tier
Does it talk to the computer — date parsing, networking, math, filesystem? system-*
Does it talk to the user's life — contacts, email, photos, accounting? service-*
Does it define the look and feel for a specific job? app-*
Is it a non-code resource — a font, an icon, a design token? asset-*
Is it speculative research not yet committed to production? moonshot-*
Does it compose other components into a runtime container? os-*

Why the prefix discipline scales

Three structural advantages emerge from the taxonomy:

Advantage Effect
Discoverability A new contributor reading a directory name knows immediately what layer it operates at without opening a file
Dependency hygiene app-* may depend on service-* and system-*; service-* may depend on system-*; system-* has no upward dependencies — cyclic dependencies are mechanically impossible
Composition over inheritance An operating system is an os-* composition that loads app-* cartridges and connects to service-* daemons; the OS contains no feature-specific code

This is the filesystem-level expression of composition over inheritance: the OS is a generic engine; the application is the personality.

Strict kebab-case

All six tiers use lowercase ASCII with hyphens. Capital letters are not permitted. The constraint holds across Docker registries, case-sensitive Linux filesystems, case-insensitive macOS filesystems, and DNS subdomains.

Form Status Reason
os-totebox Canonical Lowercase kebab-case
Totebox-OS Not permitted Mixed case creates phantom drift across operating systems
Totebox_OS Not permitted Underscores are not standard in repository or container names
toteboxos Not permitted Loses readability without a delimiter

Uppercase is preserved only for a small set of root-level operational files — README, LICENSE, CLAUDE.md, AGENT.md — where the convention predates the kebab-case rule.

Name supersession

The taxonomy took several generations to settle. Earlier names appear throughout the source archive and are normalised when content is migrated:

Earlier name Current canonical
lib-pointsav-* package-* (shared libraries)
software-pdfs, software-wordprocessing app-workplace-pdfs, app-workplace-wordprocessor
console-people, node-console-people app-console-people
sys-marketing, sys-knowledge, sys-distro app-mediakit-marketing, app-mediakit-knowledge, app-mediakit-distribution
fleet-infrastructure-*, gateway-interface-*, route-network-admin app-infrastructure-onprem / -leased / -cloud, app-orchestration-command, app-network-admin

See also

Important Information

Important Information

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