feat: add versioned skill configuration

backend/apps/skills/schemas.py

@@ -0,0 +1,53 @@
+from datetime import datetime
+from typing import Any
+
+from ninja import Schema
+
+
+class SkillCreateIn(Schema):
+    code: str
+    name: str
+    description: str = ""
+    prompt_template: str = ""
+    input_schema: dict[str, Any] = {"type": "object"}
+    output_schema: dict[str, Any] = {"type": "object"}
+    example_input: dict[str, Any] = {}
+
+
+class SkillDefinitionUpdateIn(Schema):
+    name: str | None = None
+    description: str | None = None
+
+
+class SkillDraftUpdateIn(Schema):
+    prompt_template: str | None = None
+    input_schema: dict[str, Any] | None = None
+    output_schema: dict[str, Any] | None = None
+    example_input: dict[str, Any] | None = None
+
+
+class SkillVersionOut(Schema):
+    id: int
+    version: int
+    status: str
+    prompt_template: str
+    input_schema: dict[str, Any]
+    output_schema: dict[str, Any]
+    example_input: dict[str, Any]
+    created_at: datetime
+    updated_at: datetime
+    published_at: datetime | None
+
+
+class SkillDefinitionOut(Schema):
+    id: int
+    code: str
+    name: str
+    description: str
+    active_version: int | None
+    draft_version: int | None
+    updated_at: datetime
+
+
+class SkillDetailOut(SkillDefinitionOut):
+    versions: list[SkillVersionOut]