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arch-init

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Build a repo's first living-architecture model — write the language sections of architecture/index.yaml, scaffold the as-is model from the measured imports (la-arch-scaffold), choose the wedge with the user, draft the principles from the repo's own instructions, map the specs, and get la-arch-check green. Syntax and maintenance are in the la:living-architecture reference.

plugin/skills/arch-init/SKILL.md

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Nov 11, 2026
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**Preflight:** run `la-doctor --plugin <this skill's base directory> --require-config` once per session before using any `la-*` or `dr-*` command. If it reports the missing-config finding (the one naming `/la:init`), run the fast path of the `la:init` skill, then re-run this preflight; stop and show the user its output on anything it still reports, or on any other failure.

# Build the first architecture model

The syntax of the model, `index.yaml`, views and arc42 files, and every check `la-arch-check` runs, are in
the `la:living-architecture` skill; read it first. Everything this skill writes is normative, like tests:
show each model, arc42 and `index.yaml` edit and get the user's OK before landing it.

## 1. Preconditions

- `architecture/index.yaml` does not exist (otherwise this is maintenance: use `la:living-architecture`).
- `openspec: true` in the config means `openspec/` is healthy; if not, run `la:openspec-init` first.
- A type check with a baseline: run `la-typecheck`. If it checks a language that has no baseline, offer
  `la-typecheck --write-baseline` (the one legitimate recording; afterwards the baseline only shrinks). If it
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