context loading, path resolution, form state, dynamic rules, and provider-neutral assessment runner/cache boundary

src/markitect_tool/extension/builtins.py

@@ -14,6 +14,9 @@ def builtin_extension_registry() -> ExtensionRegistry:
     for descriptor in _processor_descriptors() + [
         _local_sqlite_backend_descriptor(),
         _workflow_engine_descriptor(),
+        _runtime_context_descriptor(),
+        _runtime_form_state_descriptor(),
+        _runtime_assessment_descriptor(),
     ]:
         registry.register(descriptor)
     return registry
@@ -120,3 +123,68 @@ def _workflow_engine_descriptor() -> ExtensionDescriptor:
         docs=["docs/workflow-definition-standard.md"],
         examples=["examples/workflows/adr-release-notes.workflow.md"],
     )
+
+
+def _runtime_context_descriptor() -> ExtensionDescriptor:
+    return ExtensionDescriptor(
+        id="runtime.context",
+        kind="runtime",
+        summary="YAML/JSON runtime context loader for document contracts.",
+        capabilities=[
+            ProcessingCapability(id="context", kind="read"),
+            ProcessingCapability(id="json-schema", kind="validate"),
+            ProcessingCapability(id="diagnostics", kind="emit"),
+        ],
+        safety={"reads_files": True, "network": False},
+        input_contract="YAML/JSON runtime context file",
+        output_contract="RuntimeContext",
+        diagnostics_namespace="runtime.context",
+        provenance_prefix="runtime.context",
+        cli={"commands": ["mkt contract check --context", "mkt contract form-state"]},
+        docs=["docs/runtime-context-forms-assessments.md"],
+        examples=["examples/runtime/business-letter.context.yaml"],
+    )
+
+
+def _runtime_form_state_descriptor() -> ExtensionDescriptor:
+    return ExtensionDescriptor(
+        id="runtime.form-state",
+        kind="runtime",
+        summary="UI-neutral field prefill, validation, and dynamic rule engine.",
+        capabilities=[
+            ProcessingCapability(id="forms", kind="evaluate"),
+            ProcessingCapability(id="rules", kind="evaluate"),
+            ProcessingCapability(id="contracts", kind="validate"),
+            ProcessingCapability(id="diagnostics", kind="emit"),
+        ],
+        safety={"reads_files": False, "network": False},
+        input_contract="Document + DocumentContract + RuntimeContext",
+        output_contract="FormState",
+        diagnostics_namespace="runtime",
+        provenance_prefix="runtime.form_state",
+        cli={"commands": ["mkt contract form-state"]},
+        docs=["docs/runtime-context-forms-assessments.md"],
+        examples=["examples/runtime/workplan-dynamic.contract.md"],
+    )
+
+
+def _runtime_assessment_descriptor() -> ExtensionDescriptor:
+    return ExtensionDescriptor(
+        id="runtime.assessment",
+        kind="assessment-runner",
+        summary="Provider-neutral rubric assessment request, result, and cache boundary.",
+        capabilities=[
+            ProcessingCapability(id="assessment", kind="execute"),
+            ProcessingCapability(id="rubrics", kind="read"),
+            ProcessingCapability(id="cache-key", kind="compute"),
+            ProcessingCapability(id="diagnostics", kind="emit"),
+        ],
+        safety={"network": "adapter-only", "provider_calls": "adapter-only"},
+        input_contract="AssessmentRequest",
+        output_contract="AssessmentResult",
+        diagnostics_namespace="runtime.assessment",
+        provenance_prefix="runtime.assessment",
+        docs=["docs/runtime-context-forms-assessments.md"],
+        examples=["examples/runtime/concept-note-assessment.contract.md"],
+        metadata={"provider_implementation": "external adapter required"},
+    )