fix: add Vite plugin to load .template files as text for Vitest

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: ndbroadbent

src/cache/pipeline.ts

@@ -24,7 +24,7 @@ import { createHash } from 'node:crypto'
 import { existsSync, mkdirSync, readdirSync, readFileSync, writeFileSync } from 'node:fs'
 import { basename, join } from 'node:path'
 
-export type PipelineStage =
+type PipelineStage =
   | 'chat'
   | 'messages'
   | 'parse_stats'

vitest.config.ts

@@ -1,10 +1,22 @@
+import { readFileSync } from 'node:fs'
 import { loadEnv } from 'vite'
 import { defineConfig } from 'vitest/config'
 
 export default defineConfig(({ mode }) => ({
   esbuild: {
     tsconfigRaw: '{}'
   },
+  plugins: [
+    {
+      name: 'template-loader',
+      transform(_code, id) {
+        if (id.endsWith('.template')) {
+          const content = readFileSync(id, 'utf-8')
+          return `export default ${JSON.stringify(content)}`
+        }
+      }
+    }
+  ],
   test: {
     env: loadEnv(mode, process.cwd(), ''),
     globals: true,