Fix S3 module resolution and add debugging

- Normalize version parameter to handle both with/without trailing slash
- Add comprehensive S3 access logging for debugging
- Fixed cache key construction to avoid double slashes
- Tested locally with React imports - typecheck and build working

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

Co-Authored-By: Claude <[email protected]>

Author: zshannon

.env.op

@@ -0,0 +1,6 @@
+# S3 upload configuration for TypeScript server
+AWS_ACCESS_KEY_ID="op://Crayon Production/FLY_TSGO_TIGRIS/AWS_ACCESS_KEY_ID"
+AWS_SECRET_ACCESS_KEY="op://Crayon Production/FLY_TSGO_TIGRIS/AWS_SECRET_ACCESS_KEY"
+AWS_REGION="op://Crayon Production/FLY_TSGO_TIGRIS/AWS_REGION"
+AWS_ENDPOINT_URL_S3="op://Crayon Production/FLY_TSGO_TIGRIS/AWS_ENDPOINT_URL_S3"
+S3_BUCKET="op://Crayon Production/FLY_TSGO_TIGRIS/S3_BUCKET"

server/server.go

@@ -104,7 +104,14 @@ func newS3FS(version string) *s3FS {
 
 // getFromCache retrieves an entry from cache or fetches from S3
 func getFromCache(ctx context.Context, version, path string) *CacheEntry {
-	cacheKey := fmt.Sprintf("%s%s", version, path)
+	// Normalize version - ensure it ends with exactly one slash
+	if !strings.HasSuffix(version, "/") {
+		version = version + "/"
+	}
+	cacheKey := fmt.Sprintf("%s%s", version, strings.TrimPrefix(path, "/"))
+	
+	// Log S3 access for debugging
+	log.Printf("S3 lookup: bucket=%s, key=%s", s3Bucket, cacheKey)
 
 	// Check cache first
 	cacheMutex.RLock()
@@ -129,6 +136,7 @@ func getFromCache(ctx context.Context, version, path string) *CacheEntry {
 		defer result.Body.Close()
 		content, err := io.ReadAll(result.Body)
 		if err == nil {
+			log.Printf("S3 file found: %s (%d bytes)", cacheKey, len(content))
 			entry := &CacheEntry{
 				Exists:  true,
 				IsFile:  true,
@@ -138,7 +146,11 @@ func getFromCache(ctx context.Context, version, path string) *CacheEntry {
 			cache.Add(cacheKey, entry)
 			cacheMutex.Unlock()
 			return entry
+		} else {
+			log.Printf("S3 file read error for %s: %v", cacheKey, err)
 		}
+	} else {
+		log.Printf("S3 file fetch error for %s: %v", cacheKey, err)
 	}
 
 	// Not a file, try as directory
@@ -157,6 +169,7 @@ func getFromCache(ctx context.Context, version, path string) *CacheEntry {
 
 	if err != nil {
 		s3ListErrors.Inc()
+		log.Printf("S3 list error for key %s: %v", cacheKey, err)
 		// Cache as non-existent
 		entry := &CacheEntry{Exists: false}
 		cacheMutex.Lock()