Restructure skill numbering: SEO 11-30, GTM 60-69, reserve 19-28 for future skills

Renumber 12 existing skills to new ranges:
- SEO: 11→13, 12→18, 13→16, 14→17, 15→14, 16→15, 17→29, 18→30, 19→12
- GTM: 20→60, 21→61, 22→62

Update cross-references in gateway architect/builder skills, GTM guardian
README, CLAUDE.md (skill tables + directory layout), and AGENTS.md
(domain routing ranges).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

custom-skills/30-seo-gateway-builder/code/config/locations.json

@@ -0,0 +1,235 @@
+{
+  "locations": [
+    {
+      "id": "gangnam",
+      "name_en": "Gangnam",
+      "name_kr": "강남",
+      "name_cn": "江南",
+      "district": "Gangnam-gu",
+      "city": "Seoul",
+      "full_address_kr": "서울특별시 강남구 테헤란로 123",
+      "full_address_en": "123 Teheran-ro, Gangnam-gu, Seoul",
+      "postal_code": "06234",
+      "latitude": 37.4979,
+      "longitude": 127.0276,
+      "landmarks": [
+        "COEX Mall",
+        "Gangnam Station",
+        "Samsung Station",
+        "Bongeunsa Temple"
+      ],
+      "subway_stations": [
+        {
+          "name": "Gangnam Station",
+          "lines": ["Line 2", "Sinbundang Line"],
+          "exit": "Exit 11",
+          "walking_time": "3 minutes"
+        },
+        {
+          "name": "Sinnonhyeon Station",
+          "lines": ["Line 9"],
+          "exit": "Exit 6",
+          "walking_time": "5 minutes"
+        }
+      ],
+      "bus_routes": ["146", "341", "360", "740"],
+      "demographics": "Young professionals, affluent residents, business district",
+      "population": "approximately 570,000",
+      "average_age": "38.5",
+      "key_industries": ["IT", "Finance", "Medical", "Education"],
+      "nearby_hospitals": ["Samsung Medical Center", "Gangnam Severance Hospital"],
+      "parking": {
+        "available": true,
+        "type": "Underground",
+        "capacity": 50,
+        "fee": "Free for patients"
+      }
+    },
+    {
+      "id": "myeongdong",
+      "name_en": "Myeongdong",
+      "name_kr": "명동",
+      "name_cn": "明洞",
+      "district": "Jung-gu",
+      "city": "Seoul",
+      "full_address_kr": "서울특별시 중구 명동길 456",
+      "full_address_en": "456 Myeongdong-gil, Jung-gu, Seoul",
+      "postal_code": "04537",
+      "latitude": 37.5636,
+      "longitude": 126.9869,
+      "landmarks": [
+        "Myeongdong Cathedral",
+        "Lotte Department Store",
+        "Shinsegae Department Store",
+        "N Seoul Tower"
+      ],
+      "subway_stations": [
+        {
+          "name": "Myeongdong Station",
+          "lines": ["Line 4"],
+          "exit": "Exit 8",
+          "walking_time": "2 minutes"
+        },
+        {
+          "name": "Euljiro 1-ga Station",
+          "lines": ["Line 2"],
+          "exit": "Exit 5",
+          "walking_time": "7 minutes"
+        }
+      ],
+      "bus_routes": ["104", "421", "463", "507"],
+      "demographics": "Tourists, young shoppers, office workers",
+      "population": "approximately 13,000",
+      "average_age": "42.3",
+      "key_industries": ["Retail", "Tourism", "Banking", "Hospitality"],
+      "nearby_hospitals": ["Seoul Medical Center", "Asan Medical Center"],
+      "parking": {
+        "available": true,
+        "type": "Building parking",
+        "capacity": 30,
+        "fee": "2,000 KRW per hour"
+      }
+    },
+    {
+      "id": "hongdae",
+      "name_en": "Hongdae",
+      "name_kr": "홍대",
+      "name_cn": "弘大",
+      "district": "Mapo-gu",
+      "city": "Seoul",
+      "full_address_kr": "서울특별시 마포구 와우산로 789",
+      "full_address_en": "789 Wausan-ro, Mapo-gu, Seoul",
+      "postal_code": "04104",
+      "latitude": 37.5563,
+      "longitude": 126.9220,
+      "landmarks": [
+        "Hongik University",
+        "Hongdae Shopping Street",
+        "Sangsang Madang",
+        "Hongdae Free Market"
+      ],
+      "subway_stations": [
+        {
+          "name": "Hongik University Station",
+          "lines": ["Line 2", "Airport Railroad", "Gyeongui-Jungang Line"],
+          "exit": "Exit 9",
+          "walking_time": "1 minute"
+        },
+        {
+          "name": "Sangsu Station",
+          "lines": ["Line 6"],
+          "exit": "Exit 1",
+          "walking_time": "8 minutes"
+        }
+      ],
+      "bus_routes": ["271", "602", "603", "760"],
+      "demographics": "University students, young adults, artists, indie culture",
+      "population": "approximately 385,000",
+      "average_age": "35.2",
+      "key_industries": ["Entertainment", "Arts", "Cafes", "Fashion"],
+      "nearby_hospitals": ["Severance Hospital", "Sinchon Severance Hospital"],
+      "parking": {
+        "available": false,
+        "type": "Street parking only",
+        "capacity": 0,
+        "fee": "Public parking nearby"
+      }
+    },
+    {
+      "id": "apgujeong",
+      "name_en": "Apgujeong",
+      "name_kr": "압구정",
+      "name_cn": "狎鸥亭",
+      "district": "Gangnam-gu",
+      "city": "Seoul",
+      "full_address_kr": "서울특별시 강남구 압구정로 321",
+      "full_address_en": "321 Apgujeong-ro, Gangnam-gu, Seoul",
+      "postal_code": "06001",
+      "latitude": 37.5311,
+      "longitude": 127.0403,
+      "landmarks": [
+        "Galleria Department Store",
+        "Apgujeong Rodeo Street",
+        "Dosan Park",
+        "K-Star Road"
+      ],
+      "subway_stations": [
+        {
+          "name": "Apgujeong Station",
+          "lines": ["Line 3"],
+          "exit": "Exit 2",
+          "walking_time": "4 minutes"
+        },
+        {
+          "name": "Apgujeong Rodeo Station",
+          "lines": ["Suin-Bundang Line"],
+          "exit": "Exit 5",
+          "walking_time": "3 minutes"
+        }
+      ],
+      "bus_routes": ["145", "301", "362", "472"],
+      "demographics": "High-income residents, luxury shoppers, K-beauty enthusiasts",
+      "population": "approximately 24,000",
+      "average_age": "41.7",
+      "key_industries": ["Luxury retail", "Beauty", "Plastic surgery", "Fashion"],
+      "nearby_hospitals": ["Chung-Ang University Hospital", "Seoul St. Mary's Hospital"],
+      "parking": {
+        "available": true,
+        "type": "Valet service",
+        "capacity": 40,
+        "fee": "Complimentary for VIP patients"
+      }
+    },
+    {
+      "id": "jamsil",
+      "name_en": "Jamsil",
+      "name_kr": "잠실",
+      "name_cn": "蚕室",
+      "district": "Songpa-gu",
+      "city": "Seoul",
+      "full_address_kr": "서울특별시 송파구 올림픽로 240",
+      "full_address_en": "240 Olympic-ro, Songpa-gu, Seoul",
+      "postal_code": "05554",
+      "latitude": 37.5132,
+      "longitude": 127.1001,
+      "landmarks": [
+        "Lotte World Tower",
+        "Lotte World",
+        "Seokchon Lake",
+        "Olympic Park"
+      ],
+      "subway_stations": [
+        {
+          "name": "Jamsil Station",
+          "lines": ["Line 2", "Line 8"],
+          "exit": "Exit 4",
+          "walking_time": "5 minutes"
+        },
+        {
+          "name": "Jamsilsaenae Station",
+          "lines": ["Line 2"],
+          "exit": "Exit 9",
+          "walking_time": "10 minutes"
+        }
+      ],
+      "bus_routes": ["2415", "3217", "3313", "3414"],
+      "demographics": "Families, middle-class residents, sports enthusiasts",
+      "population": "approximately 660,000",
+      "average_age": "40.1",
+      "key_industries": ["Retail", "Entertainment", "Sports", "Tourism"],
+      "nearby_hospitals": ["Asan Medical Center", "Seoul Paik Hospital"],
+      "parking": {
+        "available": true,
+        "type": "Multi-level parking",
+        "capacity": 100,
+        "fee": "First 2 hours free"
+      }
+    }
+  ],
+  "metadata": {
+    "last_updated": "2024-11-19",
+    "total_locations": 5,
+    "coverage_area": "Seoul Metropolitan Area",
+    "coordinate_system": "WGS84"
+  }
+}