Add initial romance game design data

data/progression.json

@@ -0,0 +1,79 @@
+{
+  "version": "0.1.0",
+  "player": {
+    "age": 25,
+    "role": "male_protagonist"
+  },
+  "relationship_stages": [
+    {
+      "stage": 0,
+      "id": "stranger",
+      "name": "모르는 사이",
+      "requirements": []
+    },
+    {
+      "stage": 1,
+      "id": "acquaintance",
+      "name": "안면 있는 사이",
+      "requirements": ["first_encounter_complete"]
+    },
+    {
+      "stage": 2,
+      "id": "contact",
+      "name": "연락 가능한 사이",
+      "requirements": ["contact_exchanged", "affection >= 15"]
+    },
+    {
+      "stage": 3,
+      "id": "dating",
+      "name": "데이트 단계",
+      "requirements": ["trust >= 20", "date_invite_accepted"]
+    },
+    {
+      "stage": 4,
+      "id": "intimate_trust",
+      "name": "깊은 신뢰",
+      "requirements": ["date_stage_2_complete", "trust >= 45", "tension >= 25"]
+    },
+    {
+      "stage": 5,
+      "id": "lovers",
+      "name": "연인",
+      "requirements": ["date_stage_3_complete", "commitment >= 50", "confession_success"]
+    },
+    {
+      "stage": 6,
+      "id": "after_story",
+      "name": "애프터 스토리",
+      "requirements": ["lovers", "route_clear"]
+    }
+  ],
+  "adult_event_requirements": {
+    "minimum_character_age": 19,
+    "required_flags": ["lovers", "consent_confirmed"],
+    "recommended_stats": ["trust >= 55", "commitment >= 45"],
+    "presentation_modes": ["suggestive_cg", "fade_to_black", "afterglow_dialogue"]
+  },
+  "date_result_rules": {
+    "great": {
+      "affection": 12,
+      "trust": 8,
+      "tension": 6
+    },
+    "good": {
+      "affection": 8,
+      "trust": 5,
+      "tension": 3
+    },
+    "awkward": {
+      "affection": 2,
+      "trust": -2,
+      "tension": 1
+    },
+    "failed": {
+      "affection": -5,
+      "trust": -8,
+      "tension": -3
+    }
+  }
+}