Refactor the D&D spells module to apply deterministic fields where appropriate

internal/modules/extract/dnd/spells/assets/schemas/dnd_spells_llm.v1.json

@@ -0,0 +1,60 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "notarius.dnd.spells.llm",
+  "type": "object",
+  "additionalProperties": false,
+  "required": ["spell_casts"],
+  "properties": {
+    "spell_casts": {
+      "type": "array",
+      "items": {
+        "type": "object",
+        "additionalProperties": false,
+        "required": [
+          "caster",
+          "spell",
+          "effect",
+          "narrative_description",
+          "source_refs"
+        ],
+        "properties": {
+          "caster": {
+            "type": "string",
+            "minLength": 1
+          },
+          "spell": {
+            "type": "string",
+            "minLength": 1
+          },
+          "effect": {
+            "type": "string",
+            "minLength": 1
+          },
+          "narrative_description": {
+            "type": "string",
+            "minLength": 1
+          },
+          "source_refs": {
+            "type": "array",
+            "minItems": 1,
+            "items": {
+              "type": "object",
+              "additionalProperties": false,
+              "required": ["start_unit_id", "end_unit_id"],
+              "properties": {
+                "start_unit_id": {
+                  "type": "integer",
+                  "minimum": 1
+                },
+                "end_unit_id": {
+                  "type": "integer",
+                  "minimum": 1
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}