feat(game): match Ref nation basic card

app/game-api/src/services/mainNationProjection.ts

@@ -0,0 +1,75 @@
+import { asRecord } from '@sammo-ts/common';
+
+const STRATEGIC_COMMAND_NAMES = [
+    '필사즉생',
+    '백성동원',
+    '수몰',
+    '허보',
+    '의병모집',
+    '이호경식',
+    '급습',
+    '피장파장',
+] as const;
+
+const readFiniteNumber = (value: unknown, fallback = 0): number => {
+    if (typeof value === 'number' && Number.isFinite(value)) return value;
+    if (typeof value === 'string') {
+        const parsed = Number(value);
+        if (Number.isFinite(parsed)) return parsed;
+    }
+    return fallback;
+};
+
+const clamp = (value: number, min: number, max: number): number => Math.min(max, Math.max(min, value));
+
+export const splitNationTraitInfo = (info: string): { pros: string; cons: string } => {
+    const tokens = info.trim().split(/\s+/u).filter(Boolean);
+    return {
+        pros: tokens.filter((token) => token.endsWith('↑')).join(' '),
+        cons: tokens.filter((token) => token.endsWith('↓')).join(' '),
+    };
+};
+
+export const resolveMainNationTech = (options: {
+    tech: number;
+    currentYear: number;
+    worldConfig: unknown;
+    worldMeta: unknown;
+}): { level: number; limited: boolean } => {
+    const config = asRecord(options.worldConfig);
+    const constValues = asRecord(config.const ?? config.consts);
+    const scenarioMeta = asRecord(asRecord(options.worldMeta).scenarioMeta);
+    const maxLevel = Math.max(1, Math.floor(readFiniteNumber(constValues.maxTechLevel, 12)));
+    const initialLevel = Math.max(1, Math.floor(readFiniteNumber(constValues.initialAllowedTechLevel, 1)));
+    const increaseYears = Math.max(1, Math.floor(readFiniteNumber(constValues.techLevelIncYear, 5)));
+    const startYear = readFiniteNumber(scenarioMeta.startYear, options.currentYear);
+    const relativeMaximum = clamp(
+        Math.floor((options.currentYear - startYear) / increaseYears) + initialLevel,
+        1,
+        maxLevel
+    );
+    const level = clamp(Math.floor(options.tech / 1000), 0, maxLevel);
+    return { level, limited: level >= relativeMaximum };
+};
+
+export const resolveImpossibleStrategicCommands = (
+    nationMeta: unknown,
+    currentYear: number,
+    currentMonth: number
+): Array<{ name: string; remainingTurns: number; availableYear: number; availableMonth: number }> => {
+    const meta = asRecord(nationMeta);
+    const currentYearMonth = Math.floor(currentYear) * 12 + Math.floor(currentMonth) - 1;
+    const result: Array<{ name: string; remainingTurns: number; availableYear: number; availableMonth: number }> = [];
+
+    for (const name of STRATEGIC_COMMAND_NAMES) {
+        const nextAvailable = Math.floor(readFiniteNumber(meta[`next_execute_${name}`], 0));
+        if (nextAvailable <= currentYearMonth) continue;
+        result.push({
+            name,
+            remainingTurns: nextAvailable - currentYearMonth,
+            availableYear: Math.floor(nextAvailable / 12),
+            availableMonth: (nextAvailable % 12) + 1,
+        });
+    }
+    return result;
+};