refactor: update imports for build module rename

Signed-off-by: leocavalcante <leo@cavalcante.dev>

Author: leocavalcante

src/loop.ts

@@ -8,7 +8,7 @@
  */
 
 import { join } from "node:path"
-import { Builder } from "./builder.ts"
+import { Builder } from "./build.ts"
 import { extractEvalReason, isComplete, parseEval } from "./eval.ts"
 import {
 	ensureDirectories,

tests/build.test.ts

@@ -10,7 +10,7 @@ import {
 	type Part,
 	type ServerEvent,
 	type TextPart,
-} from "../src/builder.ts"
+} from "../src/build.ts"
 
 /** Mock logger calls record */
 interface MockLoggerCalls {