diff --git a/scripts/cellfs.cm b/scripts/cellfs.cm
index 71400232..bce009da 100644
--- a/scripts/cellfs.cm
+++ b/scripts/cellfs.cm
@@ -9,6 +9,8 @@ var miniz = use('miniz')
 // Internal state
 var mounts = []  // Array of {source, type, handle, name}
 
+var writepath = "."
+
 // Helper to normalize paths
 function normalize_path(path) {
   if (!path) return ""
@@ -102,40 +104,27 @@ function resolve(path, must_exist) {
   }
   
   if (must_exist) {
-    // throw new Error("File not found in any mount: " + path)
-    return null
+    throw new Error("File not found in any mount: " + path)
   }
-  
-  return null
 }
 
 // Mount a source
 function mount(source, name) {
   // Check if source exists
-  var st = null
-  try {
-    st = fd.stat(source)
-  } catch (e) {
-    throw new Error("Mount source not found: " + source)
-  }
+  var st = fd.stat(source)
   
   var mount_info = {
     source: source,
     name: name || null,
     type: 'fs',
-    handle: null
+    handle: null,
+    zip_blob: null
   }
   
   if (st.isDirectory) {
     mount_info.type = 'fs'
   } else if (st.isFile) {
-    // Assume zip
-    var zip_data = null
-    // Always read as bytes for zip
-    var f = fd.open(source, 'r')
-    var s = fd.fstat(f)
-    zip_data = fd.read(f, s.size)
-    fd.close(f)
+    var zip_data = fd.slurp(source)
     
     var zip = miniz.read(zip_data)
     if (!zip || typeof zip.count != 'function') {
@@ -144,6 +133,7 @@ function mount(source, name) {
     
     mount_info.type = 'zip'
     mount_info.handle = zip
+    mount_info.zip_blob = zip_data // keep blob alive for lifetime of mount
   } else {
     throw new Error("Unsupported mount source type: " + source)
   }
@@ -177,37 +167,9 @@ function slurp(path) {
   }
 }
 
-// Read file as bytes
-function slurpbytes(path) {
-  var res = resolve(path, true)
-  if (!res) throw new Error("File not found: " + path)
-  
-  if (res.mount.type == 'zip') {
-    return res.mount.handle.slurp(res.path)
-  } else {
-    var full_path = join_paths(res.mount.source, res.path)
-    var f = fd.open(full_path, 'r')
-    var s = fd.fstat(f)
-    var data = fd.read(f, s.size)
-    fd.close(f)
-    return data
-  }
-}
-
 // Write file
 function slurpwrite(path, data) {
-  if (!path.startsWith("@")) {
-    throw new Error("slurpwrite requires a named mount (e.g. @name/file.txt)")
-  }
-  
-  var res = resolve(path, false) 
-  // For named mounts, resolve returns the mount even if file doesn't exist
-  
-  if (res.mount.type == 'zip') {
-    throw new Error("Cannot write to zip mount: @" + res.mount.name)
-  }
-  
-  var full_path = join_paths(res.mount.source, res.path)
+  var full_path = writepath + "/" + path
   
   var f = fd.open(full_path, 'w')
   fd.write(f, data)
@@ -248,21 +210,31 @@ function stat(path) {
 
 // Get search paths
 function searchpath() {
-  var paths = []
-  for (var mount of mounts) {
-    paths.push(mount.source)
-  }
-  return paths
+  return mounts.slice()
 }
 
-// Initialize
-mount('.', 'cwd')
+// Mount a package using the shop system
+function mount_package(name) {
+  if (name == null) {
+    mount('.', null)
+    return
+  }
+  
+  var shop = use('shop')
+  var dir = shop.get_module_dir(name)
+  
+  if (!dir) {
+    throw new Error("Package not found: " + name)
+  }
+  
+  mount(dir, name)
+}
 
 // Exports
 cellfs.mount = mount
+cellfs.mount_package = mount_package
 cellfs.unmount = unmount
 cellfs.slurp = slurp
-cellfs.slurpbytes = slurpbytes
 cellfs.slurpwrite = slurpwrite
 cellfs.exists = exists
 cellfs.stat = stat
diff --git a/tests/cellfs.ce b/tests/cellfs.ce
index 0b486c77..3505bec7 100644
--- a/tests/cellfs.ce
+++ b/tests/cellfs.ce
@@ -6,6 +6,7 @@ var io = use('io')
 var time = use('time')
 var json = use('json')
 var blob = use('blob')
+var utf8 = use('utf8')
 
 log.console("CellFS vs IO Performance Test")
 log.console("=================================")
@@ -22,8 +23,7 @@ io.mount('.')
 
 var io_paths = io.searchpath()
 log.console(io_paths)
-log.console(io_paths.length)
-log.console(typeof io_paths)
+
 for (var i = 0; i < io_paths.length; i++) {
   var path = io_paths[i]
   try {
@@ -53,7 +53,7 @@ log.console(`IO slurpbytes (100 iterations): ${io_time}ms`)
 // Test cellfs.slurpbytes
 start_time = time.number()
 for (var i = 0; i < 100; i++) {
-  var content = cellfs.slurpbytes(test_file)
+  var content = cellfs.slurp(test_file)
 }
 var cellfs_time = time.number() - start_time
 log.console(`CellFS slurpbytes (100 iterations): ${cellfs_time}ms`)
@@ -110,28 +110,29 @@ var miniz = use('miniz')
 var zip_writer = miniz.write("test_archive.zip")
 // Use io.slurpbytes to get content as ArrayBuffer for miniz
 var content_bytes = io.slurpbytes(test_file)
-zip_writer.add_file("test.txt", content_bytes)
+zip_writer.add_file("test2.txt", content_bytes)
 zip_writer = null // Close it
 
 // Mount the ZIP with io
-io.mount("test_archive.zip", "/test_zip")
+io.mount("test_archive.zip")
 
 // Mount the ZIP with cellfs
-cellfs.mount("test_archive.zip", "/test_zip")
+cellfs.mount("test_archive.zip")
 
 log.console("Testing ZIP file reading...")
 
 start_time = time.number()
 for (var i = 0; i < 100; i++) {
-  var content = io.slurp("test.txt")
+  var content = io.slurp("test2.txt")
 }
 io_time = time.number() - start_time
 log.console(`IO ZIP read (100 iterations): ${io_time}ms`)
 
 start_time = time.number()
 for (var i = 0; i < 100; i++) {
-  var content = cellfs.slurp("test.txt")
+  var content = cellfs.slurp("test2.txt")
 }
+
 cellfs_time = time.number() - start_time
 log.console(`CellFS ZIP read (100 iterations): ${cellfs_time}ms`)
 
@@ -160,10 +161,9 @@ for (var i = 0; i < 10; i++) {
 io_time = time.number() - start_time
 log.console(`IO large file read (10 iterations): ${io_time}ms`)
 
-// Test cellfs.slurpbytes
 start_time = time.number()
 for (var i = 0; i < 10; i++) {
-  var large_content = cellfs.slurpbytes(large_file)
+  var large_content = cellfs.slurp(large_file)
 }
 cellfs_time = time.number() - start_time
 log.console(`CellFS large file read (10 iterations): ${cellfs_time}ms`)
diff --git a/tests/miniz.ce b/tests/miniz.ce
new file mode 100644
index 00000000..0d913290
--- /dev/null
+++ b/tests/miniz.ce
@@ -0,0 +1,51 @@
+var fd = use("fd")
+var miniz = use("miniz")
+var utf8 = use("utf8")
+
+var ZIP_PATH = "miniz_test.zip"
+var SOURCE_PATH = "miniz_source.txt"
+var ENTRY_PATH = "sample/hello.txt"
+var PAYLOAD = "Miniz integration test payload."
+
+function write_text_file(path, text) {
+  var handle = fd.open(path, "w")
+  fd.write(handle, text)
+  fd.close(handle)
+}
+
+function main() {
+  log.console("[miniz] creating source file via fd module...")
+  write_text_file(SOURCE_PATH, PAYLOAD)
+
+  log.console("[miniz] creating zip via fd-backed filesystem...")
+  var source_blob = fd.slurp(SOURCE_PATH)
+  var writer = miniz.write(ZIP_PATH)
+  writer.add_file(ENTRY_PATH, source_blob)
+  writer = null
+
+  log.console("[miniz] zip written; reading back through fd module")
+  var zip_blob = fd.slurp(ZIP_PATH)
+  var reader = miniz.read(zip_blob)
+
+  if (!reader.exists(ENTRY_PATH))
+    throw new Error("miniz test: entry missing in archive")
+
+  var extracted_blob = reader.slurp(ENTRY_PATH)
+  var extracted_text = utf8.decode(extracted_blob)
+  log.console(reader.list())
+  log.console(extracted_text);
+
+  if (extracted_text != PAYLOAD)
+    throw new Error("miniz test: extracted text mismatch")
+
+  var listed = reader.list()
+  if (listed.length != reader.count())
+    throw new Error("miniz test: list/count mismatch")
+  if (listed.length != 1 || listed[0] != ENTRY_PATH)
+    throw new Error("miniz test: unexpected entries in archive")
+
+  log.console(`miniz read success: ${listed[0]} => ${extracted_text}`)
+  $_.stop()
+}
+
+main()