fix(FN-2139): wire source export condition into CLI builds

- Add "source" export entries for @fusion/core, @fusion/dashboard, and @fusion/engine package exports
- Configure tsup/esbuild to include the "source" condition when resolving workspace dependencies
- Pass --conditions=source to bun compile so compiled CLI binaries resolve source-conditioned exports consistently

packages/cli/build.ts

@@ -243,6 +243,7 @@ function compileBinary(outFile: string, target: string, isCrossCompile: boolean)
       "--target",
       target,
       "--minify",
+      "--conditions=source",
     ],
     cwd: workspaceRoot,
     stdout: "inherit",

packages/cli/tsup.config.ts

@@ -27,6 +27,9 @@ export default defineConfig({
   format: ["esm"],
   platform: "node",
   target: "node22",
+  esbuildOptions(options) {
+    options.conditions = [...(options.conditions || []), "source"];
+  },
   noExternal: [/^@fusion\//],
   splitting: false,
   clean: true,

packages/core/package.json

@@ -5,10 +5,12 @@
   "exports": {
     ".": {
       "types": "./src/index.ts",
+      "source": "./src/index.ts",
       "import": "./dist/index.js"
     },
     "./gh-cli": {
       "types": "./src/gh-cli.ts",
+      "source": "./src/gh-cli.ts",
       "import": "./dist/gh-cli.js"
     }
   },

packages/dashboard/package.json

@@ -5,6 +5,7 @@
   "exports": {
     ".": {
       "types": "./src/index.ts",
+      "source": "./src/index.ts",
       "import": "./dist/index.js"
     },
     "./planning": {

packages/engine/package.json

@@ -5,6 +5,7 @@
   "exports": {
     ".": {
       "types": "./src/index.ts",
+      "source": "./src/index.ts",
       "import": "./dist/index.js"
     }
   },