refactor: replace TypeScript with ESM JavaScript

Remove index.ts and tsconfig.json, update package.json, and install dependencies.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

bun.lock

@@ -14,7 +14,6 @@
         "winston": "^3.11.0",
       },
       "devDependencies": {
-        "@types/bun": "latest",
         "drizzle-kit": "^0.31.10",
       },
     },
@@ -96,8 +95,6 @@
 
     "@telegraf/types": ["@telegraf/types@7.1.0", "", {}, "sha512-kGevOIbpMcIlCDeorKGpwZmdH7kHbqlk/Yj6dEpJMKEQw5lk0KVQY0OLXaCswy8GqlIVLd5625OB+rAntP9xVw=="],
 
-    "@types/bun": ["@types/bun@1.3.14", "", { "dependencies": { "bun-types": "1.3.14" } }, "sha512-h1hFqFVcvAvD9j9K7ZW7vd82aSA+rTdznZa+5bwvCwqSB1jmmfLcbIWhOLx1/+boy/xmjgCs/OMUL8hRJSmnPw=="],
-
     "@types/node": ["@types/node@25.8.0", "", { "dependencies": { "undici-types": ">=7.24.0 <7.24.7" } }, "sha512-TCFSk8IZh+iLX1xtksoBVtdmgL+1IX0fC9BeU4QqFSuNdN/K+HUlhqOzEmSYYpZUVsLYcPqc9KX+60iDuninSQ=="],
 
     "@types/triple-beam": ["@types/triple-beam@1.3.5", "", {}, "sha512-6WaYesThRMCl19iryMYP7/x2OVgCtbIVflDGFpWnb9irXI3UjYE4AzmYuiUKY1AJstGijoY+MgUszMgRxIYTYw=="],

index.ts

@@ -1 +0,0 @@
-console.log("Hello via Bun!");

package.json

@@ -18,7 +18,6 @@
     "winston": "^3.11.0"
   },
   "devDependencies": {
-    "@types/bun": "latest",
     "drizzle-kit": "^0.31.10"
   }
 }

tsconfig.json

@@ -1,30 +0,0 @@
-{
-  "compilerOptions": {
-    // Environment setup & latest features
-    "lib": ["ESNext"],
-    "target": "ESNext",
-    "module": "Preserve",
-    "moduleDetection": "force",
-    "jsx": "react-jsx",
-    "allowJs": true,
-    "types": ["bun"],
-
-    // Bundler mode
-    "moduleResolution": "bundler",
-    "allowImportingTsExtensions": true,
-    "verbatimModuleSyntax": true,
-    "noEmit": true,
-
-    // Best practices
-    "strict": true,
-    "skipLibCheck": true,
-    "noFallthroughCasesInSwitch": true,
-    "noUncheckedIndexedAccess": true,
-    "noImplicitOverride": true,
-
-    // Some stricter flags (disabled by default)
-    "noUnusedLocals": false,
-    "noUnusedParameters": false,
-    "noPropertyAccessFromIndexSignature": false
-  }
-}