fix: point JSDoc package exports to src/ not dist/

JSDoc packages (config-loader, rollup-plugin-copy,
rollup-plugin-import-meta-assets) have CJS source in src/,
not compiled output in dist/. The exports map must point to
src/ for runtime resolution to work.

Assisted-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: bennypowers

packages/config-loader/package.json

@@ -41,7 +41,7 @@
   "exports": {
     ".": {
       "types": "./dist/index.d.ts",
-      "default": "./dist/index.js"
+      "default": "./src/index.js"
     }
   }
 }

packages/rollup-plugin-copy/package.json

@@ -21,7 +21,7 @@
   "exports": {
     ".": {
       "types": "./dist/copy.d.ts",
-      "default": "./dist/copy.js"
+      "default": "./src/copy.js"
     }
   },
   "engines": {

packages/rollup-plugin-import-meta-assets/package.json

@@ -16,7 +16,7 @@
   "main": "src/index.js",
   "exports": {
     ".": {
-      "default": "./dist/index.js"
+      "default": "./src/index.js"
     }
   },
   "engines": {