Phase 1a: Tool-Repo-Skelett + Vault-Pfad-Discovery

- package.json mit Scripts (build, dev, test, init-vault, index, ingest, sync)
- TypeScript-Config (tsconfig.json) + Vitest-Config
- CLI-Entry (bin/mindomat.mjs + src/cli/index.ts)
- Vault-Pfad-Discovery (1.2) mit CLI-Arg + Env-Var Fallback
- 10 Unit-Tests fuer Vault-Pfad-Discovery (alle gruen)
- Stubs fuer init-vault, index, ingest, sync (Placeholder, volle Implementierung in 1.3/1.5/2.3/1.8)
- webapp/-Stubs (Phase 1.6 Vorbereitung)
- README mit Install-Anleitung aktualisiert

Smoke-Tests:
- mindomat --version      => mindomat 0.1.0
- mindomat --help         => vollstaendige Hilfe
- mindomat index          => Fehler 'Vault-Pfad fehlt' (Exit 2)
- mindomat index --vault  => Stub-Aufruf (Exit 0)

package.json

@@ -0,0 +1,51 @@
+{
+  "name": "mindomat",
+  "version": "0.1.0",
+  "description": "Lokales Second-Brain-System für Obsidian-kompatible Markdown-Vaults",
+  "type": "module",
+  "bin": {
+    "mindomat": "./bin/mindomat.mjs"
+  },
+  "main": "./dist/index.js",
+  "types": "./dist/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "import": "./dist/index.js"
+    }
+  },
+  "files": [
+    "bin",
+    "dist",
+    "README.md"
+  ],
+  "scripts": {
+    "build": "tsc",
+    "dev": "tsc --watch",
+    "test": "vitest run",
+    "test:watch": "vitest",
+    "init-vault": "npm run build && node bin/mindomat.mjs init-vault",
+    "index": "npm run build && node bin/mindomat.mjs index",
+    "ingest": "npm run build && node bin/mindomat.mjs ingest",
+    "sync": "npm run build && node bin/mindomat.mjs sync"
+  },
+  "keywords": [
+    "second-brain",
+    "obsidian",
+    "markdown",
+    "knowledge-management",
+    "pkm"
+  ],
+  "license": "MIT",
+  "engines": {
+    "node": ">=22.0.0"
+  },
+  "dependencies": {
+    "gray-matter": "^4.0.3"
+  },
+  "devDependencies": {
+    "@types/node": "^22.0.0",
+    "typescript": "^5.6.0",
+    "vitest": "^2.1.0"
+  }
+}