refactor(build): extracted shared TypeScript config into tsconfig.base.json

- Created tsconfig.base.json with shared compilerOptions (ESNext, bundler resolution, strict mode, Bun types) and workspace path mappings for all packages.
- Updated root tsconfig.json and all package tsconfigs to extend the base config via `extends`, removing 50 lines of duplicated compiler options.

packages/wow-contexts/tsconfig.json

@@ -1,13 +1,4 @@
 {
-  "compilerOptions": {
-    "target": "ESNext",
-    "module": "ESNext",
-    "moduleResolution": "bundler",
-    "esModuleInterop": true,
-    "strict": true,
-    "noEmit": true,
-    "skipLibCheck": true,
-    "types": ["bun"]
-  },
+  "extends": "../../tsconfig.base.json",
   "include": ["src"]
 }

packages/wow-core/tsconfig.json

@@ -1,13 +1,4 @@
 {
-  "compilerOptions": {
-    "target": "ESNext",
-    "module": "ESNext",
-    "moduleResolution": "bundler",
-    "esModuleInterop": true,
-    "strict": true,
-    "noEmit": true,
-    "skipLibCheck": true,
-    "types": ["bun"]
-  },
+  "extends": "../../tsconfig.base.json",
   "include": ["src"]
 }

packages/wow-inject/tsconfig.json

@@ -1,13 +1,4 @@
 {
-  "compilerOptions": {
-    "target": "ESNext",
-    "module": "ESNext",
-    "moduleResolution": "bundler",
-    "esModuleInterop": true,
-    "strict": true,
-    "noEmit": true,
-    "skipLibCheck": true,
-    "types": ["bun"]
-  },
+  "extends": "../../tsconfig.base.json",
   "include": ["src"]
 }

packages/wow-pi/tsconfig.json

@@ -1,13 +1,4 @@
 {
-  "compilerOptions": {
-    "target": "ESNext",
-    "module": "ESNext",
-    "moduleResolution": "bundler",
-    "esModuleInterop": true,
-    "strict": true,
-    "noEmit": true,
-    "skipLibCheck": true,
-    "types": ["bun"]
-  },
+  "extends": "../../tsconfig.base.json",
   "include": ["src"]
 }