Shellaro extensibility (0.7)

Shellaro 0.7 can be extended in three ways:

Kind	What it is	Code	Permissions
Extension	JavaScript that adds commands and sidebar views and uses the Extension API	yes, isolated	declared, approved at install
Command Pack	Curated commands and runbooks as JSON, shown in the Runbooks sidebar	no	none
Lab Pack	A hands-on lab: setup that breaks something on a cluster you choose, tasks, checks (labs)	no	none

All three are distributed as one file format, .shellaro-ext, and installed from the Marketplace (title bar, Ctrl+Shift+X), from a file, or with the developer CLI.

Documents

Architecture: how the Extension Host, workers and the Marketplace fit together
Tutorial: Hello World: your first extension in five minutes
Manifest: manifest.json reference
Permissions: what each permission allows, and risk levels
Extension API: every API call, event and type
Developer Mode: load, reload and debug extensions
CLI: shellaro ext create | dev | build | validate | install | publish | keygen
Packaging and signing: the .shellaro-ext format, integrity and signatures
Command Packs: pack.json format
Lab Packs: lab.json; doing and writing labs in ../labs.md
Sources: bundled catalog, index.json, folders, the Marketplace API
Marketplace API v1: the HTTP contract for a hosted Marketplace
Security model: isolation, what extensions can and cannot reach, honest limits
Compatibility and versioning

Shellaro's own updates are described in ../updater.md; the one-click local Kubernetes cluster in ../local-cluster.md.

First-party content

Built into the installer's offline catalog:

kubernetes/: the Kubernetes extension (Working)
samples/hello-world/: the smallest extension (Sample)
packs/: eight Command Packs: Kubernetes, Docker, Linux, systemd, Network, Git, Helm, PostgreSQL (Working)
labs/: four Kubernetes labs (Working; see ../labs.md)
catalog.json: status labels, featured items and planned entries