feat(core): initial release of financial calculation package with decimal precision

package.json

@@ -0,0 +1,47 @@
+{
+  "name": "@fin.cx/calculation",
+  "version": "1.0.0",
+  "private": false,
+  "description": "A unified, cross-platform financial calculation package with decimal precision for accurate financial computations",
+  "main": "dist_ts/index.js",
+  "type": "module",
+  "scripts": {
+    "test": "(tstest test/ --verbose)",
+    "build": "(tsbuild tsfolders --allowimplicitany && tsbundle npm)",
+    "buildDocs": "tsdoc"
+  },
+  "repository": {
+    "type": "git",
+    "url": "code.foss.global/fin.cx/calculation.git"
+  },
+  "keywords": [
+    "financial",
+    "calculation",
+    "finance",
+    "interest",
+    "amortization",
+    "npv",
+    "irr",
+    "decimal",
+    "precision"
+  ],
+  "author": "fin.cx",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/fin-cx/calculation/issues"
+  },
+  "homepage": "https://github.com/fin-cx/calculation#readme",
+  "devDependencies": {
+    "@git.zone/tsbuild": "^2.6.4",
+    "@git.zone/tsbundle": "^2.4.0",
+    "@git.zone/tsrun": "^1.3.3",
+    "@git.zone/tstest": "^2.3.1",
+    "@push.rocks/tapbundle": "^6.0.3",
+    "@types/node": "^22.7.4"
+  },
+  "dependencies": {
+    "@push.rocks/smartpromise": "^4.2.3",
+    "decimal.js": "^10.4.3"
+  },
+  "packageManager": "pnpm@10.11.0"
+}