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）
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import { getTrigramByNumber, getRelation, WUXING_SHENG, WUXING_KE } from './trigrams.js';
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import { getHexagram, getChangedHexagram, getMutualHexagram } from './hexagrams.js';
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// 获取当前节气（用于判断旺衰）
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function getCurrentJieqi() {
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const now = new Date();
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const month = now.getMonth() + 1;
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// 简化版：按月份判断大致季节
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if (month >= 3 && month <= 4)
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return '春（寅卯月）';
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if (month >= 5 && month <= 6)
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return '夏（巳午月）';
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if (month >= 7 && month <= 8)
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return '夏末（未申月）';
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if (month >= 9 && month <= 10)
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return '秋（酉戌月）';
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if (month >= 11 || month <= 1)
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return '冬（亥子月）';
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return '冬末（丑寅月）';
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}
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// 判断五行在当季旺衰
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function isElementWang(element, season) {
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if (season.includes('春') && element === '木')
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return true;
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if (season.includes('夏') && element === '火')
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return true;
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if (season.includes('秋') && element === '金')
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return true;
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if (season.includes('冬') && element === '水')
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return true;
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if (season.includes('末') && element === '土')
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return true;
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return false;
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}
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// 核心排盘
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export function calculateHua(input) {
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let upperNum, lowerNum, dongYao;
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if (input.method === 'number' && input.numbers) {
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// 数字起卦
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const nums = input.numbers;
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upperNum = nums[0] % 8 || 8;
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lowerNum = nums[1] % 8 || 8;
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dongYao = nums.length >= 3 ? (nums[0] + nums[1] + nums[2]) % 6 || 6 : (nums[0] + nums[1]) % 6 || 6;
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}
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else if (input.method === 'time') {
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// 时间起卦：年月日时
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const now = new Date();
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const year = now.getFullYear();
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const month = now.getMonth() + 1;
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const day = now.getDate();
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const hour = now.getHours();
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const minute = now.getMinutes();
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upperNum = (year + month + day) % 8 || 8;
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lowerNum = (year + month + day + hour) % 8 || 8;
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dongYao = (year + month + day + hour + minute) % 6 || 6;
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}
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else if (input.method === 'observation' && input.observedTrigrams) {
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// 梅花心易：从外应推导
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const nums = input.observedTrigrams;
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upperNum = nums[0] % 8 || 8;
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lowerNum = nums[1] % 8 || 8;
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dongYao = nums.length >= 3 ? nums[2] % 6 || 6 : (nums[0] + nums[1]) % 6 || 6;
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}
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else {
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throw new Error('无效的起卦参数');
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}
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const upperTrigram = getTrigramByNumber(upperNum);
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const lowerTrigram = getTrigramByNumber(lowerNum);
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const mainHex = getHexagram(upperNum, lowerNum);
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// 体用判断：动爻在下卦(1-3)则下卦为用、上卦为体；动爻在上卦(4-6)则上卦为用、下卦为体
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const tiPosition = dongYao <= 3 ? 'upper' : 'lower';
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const yongPosition = dongYao <= 3 ? 'lower' : 'upper';
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const tiTrigram = tiPosition === 'upper' ? upperTrigram : lowerTrigram;
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const yongTrigram = yongPosition === 'upper' ? upperTrigram : lowerTrigram;
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// 变卦
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const changedHex = getChangedHexagram(upperNum, lowerNum, dongYao);
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// 互卦
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const mutualHex = getMutualHexagram(upperNum, lowerNum);
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// 五行分析
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const relation = getRelation(tiTrigram.element, yongTrigram.element);
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let verdict = '';
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if (WUXING_SHENG[yongTrigram.element] === tiTrigram.element) {
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verdict = '用生体：外来助力，事易成，有人帮助。';
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}
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else if (WUXING_SHENG[tiTrigram.element] === yongTrigram.element) {
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verdict = '体生用：我泄气于外，耗损之象，需付出较多。';
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}
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else if (WUXING_KE[yongTrigram.element] === tiTrigram.element) {
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verdict = '用克体：外来压力大，受制于人，事难成。';
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}
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else if (WUXING_KE[tiTrigram.element] === yongTrigram.element) {
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verdict = '体克用：我能制外，事可成但需努力。';
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}
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else {
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verdict = '体用比和：势均力敌，事可成，和合之象。';
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}
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// 旺衰
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const season = getCurrentJieqi();
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const tiWang = isElementWang(tiTrigram.element, season);
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const yongWang = isElementWang(yongTrigram.element, season);
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const wangAnalysis = `当令${season}。体卦${tiTrigram.element}${tiWang ? '旺' : '衰'}，用卦${yongTrigram.element}${yongWang ? '旺' : '衰'}。`;
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return {
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mainHexagram: { upper: upperTrigram, lower: lowerTrigram, hexagram: mainHex },
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tiGua: { trigram: tiTrigram, position: tiPosition },
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yongGua: { trigram: yongTrigram, position: yongPosition },
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dongYao,
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changedHexagram: changedHex,
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mutualHexagram: mutualHex,
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wuxingAnalysis: { tiElement: tiTrigram.element, yongElement: yongTrigram.element, relation, verdict },
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wangShuai: { season, tiWang, yongWang, analysis: wangAnalysis },
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meta: {
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method: input.method,
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inputNumbers: input.numbers || [],
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question: input.question,
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timestamp: new Date().toISOString(),
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},
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};
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}
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