feat: 梅花易数 + 梅花心易 算法层 v1.0

- 八卦基础数据（先天数/五行/方位/生克关系）
- 六十四卦完整数据（卦名/卦辞/象辞/吉凶/关键词）
- 体用分析引擎（动爻→体用→五行生克→旺衰判定）
- 变卦/互卦计算
- 三种起卦方式：数字法、时间法、外应法（梅花心易）
- CLI入口：JSON/文本双格式输出
- 断卦分析 prompt + 梅花心易 prompt + 海报版 prompt
- HTML海报模板（古风暗色系）

calculator/node_modules/.package-lock.json

@@ -0,0 +1,39 @@
+{
+  "name": "meihua-calculator",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "node_modules/@types/node": {
+      "version": "26.1.2",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.1.2.tgz",
+      "integrity": "sha512-Vu4a5UFA9rIIFJ7rB/Vaafh9lrCQszopTCx6KjFboXTGQbPNasehVR5TEiithSDGyd1DEiUByggTZsg8jukeIg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "undici-types": "~8.3.0"
+      }
+    },
+    "node_modules/typescript": {
+      "version": "5.9.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
+      "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "bin": {
+        "tsc": "bin/tsc",
+        "tsserver": "bin/tsserver"
+      },
+      "engines": {
+        "node": ">=14.17"
+      }
+    },
+    "node_modules/undici-types": {
+      "version": "8.3.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-8.3.0.tgz",
+      "integrity": "sha512-j375ScV60dom+YkPFIfTLcOiPxkN/buHz5GobjLhixFuANaNs3C9l4GmrWqejgXWJ7BbJcFYpTEUkS1Ge8bpZQ==",
+      "dev": true,
+      "license": "MIT"
+    }
+  }
+}