docs: publish domain language guide

Author: HeyItsGilbert

CONTEXT.md

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+docs/reference/domain-language.md

CONTEXT.md

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+# psake Domain Language
+
+Canonical terminology for psake build definitions and reusable task distribution. This glossary gives contributors, documentation readers, and language models the same vocabulary.
+
+## Language
+
+**Shared task module**:
+A PowerShell module that distributes reusable psake task definitions through a module-root `psakeFile.ps1`.
+_Avoid_: Shared module, build module, task library
+
+**Provider module**:
+The shared task module that owns and distributes reusable task definitions.
+_Avoid_: Source module, plugin
+
+**Consumer build**:
+A psake build that references tasks from a provider module using `Task -FromModule`.
+_Avoid_: Client build, importing build
+
+**Shared task reference**:
+A declaration in a consumer build that selects a provider task using `Task -FromModule`; it references a provider definition rather than defining a local task action.
+_Avoid_: Imported task, module task import
+
+**Public task**:
+A provider task intended for consumers to reference directly. Public status is an authoring convention because psake registers every task in the provider task file without visibility boundaries.
+_Avoid_: Exported task
+
+**Supporting task**:
+A provider task that exists primarily as a dependency of a public task. It remains directly invocable because psake does not enforce task visibility.
+_Avoid_: Private task, internal task

docs/reference/domain-language.md

@@ -121,6 +121,11 @@ const sidebars: SidebarsConfig = {
       items: [
         'reference/configuration-reference',
         'reference/cheat-sheet',
+        {
+          type: 'doc',
+          label: 'Domain Language',
+          id: 'reference/domain-language'
+        },
         'reference/glossary',
         'reference/exit-codes',
       ]