Domain creation [Flow]

# Domain creation `[Flow]`

Every on-ramp terminates in the same canonical Domain record. The UI's `CreationWizard` and the headless
operations differ only in how they prepare the input; a malformed model response is a failed generation,
not a second repair path.

```mermaid
flowchart LR
  New([New Domain]) --> Form["Title · paradigm · premise<br/>optional source text"]
  Form --> Path{On-ramp}
  Path -->|Start blank| Blank[buildBlankDomain] --> Add
  Path -->|Generate| Generate[generateDomain<br/>streamed reasoning + validated output] --> Tree[fileTreeBuildTime<br/>self-organises topic tree] --> Add
  Path -->|From text corpus| Extract[extract-text operation] --> Add
  Add[["ADD_DOMAIN / createDoc"]] --> Open([Open Domain])
  Open --> Loop([Enter the daily loop])
```

Headless equivalents: `create-domain` (title + premise), `extract-text` (corpus → Domain), and
`extend-domain-from-text` / `run-interview` (enrich an existing Domain).

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