diff --git a/audit.ce b/audit.ce
index 33a5d9f3..1dea25d0 100644
--- a/audit.ce
+++ b/audit.ce
@@ -37,6 +37,7 @@ var total_ok = 0
 var total_errors = 0
 var total_scripts = 0
 var all_failures = []
+var all_unresolved = []
 
 if (target_package) {
   packages = [target_package]
@@ -57,6 +58,12 @@ arrfor(packages, function(p) {
   arrfor(result.errors, function(e) {
     push(all_failures, p + ": " + e)
   })
+
+  // Check use() resolution
+  var resolution = shop.audit_use_resolution(p)
+  arrfor(resolution.unresolved, function(u) {
+    push(all_unresolved, p + '/' + u.script + ": use('" + u.module + "') cannot be resolved")
+  })
 })
 
 log.console("")
@@ -68,7 +75,18 @@ if (length(all_failures) > 0) {
   log.console("")
 }
 
-log.console("Audit complete: " + text(total_ok) + "/" + text(total_scripts) + " scripts compiled" + (total_errors > 0 ? ", " + text(total_errors) + " failed" : ""))
+if (length(all_unresolved) > 0) {
+  log.console("Unresolved modules:")
+  arrfor(all_unresolved, function(u) {
+    log.console("  " + u)
+  })
+  log.console("")
+}
+
+var summary = "Audit complete: " + text(total_ok) + "/" + text(total_scripts) + " scripts compiled"
+if (total_errors > 0) summary = summary + ", " + text(total_errors) + " failed"
+if (length(all_unresolved) > 0) summary = summary + ", " + text(length(all_unresolved)) + " unresolved use() calls"
+log.console(summary)
 }
 run()
 
diff --git a/internal/shop.cm b/internal/shop.cm
index 7f2cf8fc..8fdfd63d 100644
--- a/internal/shop.cm
+++ b/internal/shop.cm
@@ -48,6 +48,9 @@ function hash_path(content, salt)
 
 var Shop = {}
 
+// Stack tracking the chain of use() calls for error reporting
+var use_stack = []
+
 var SCOPE_LOCAL = 0
 var SCOPE_PACKAGE = 1
 var SCOPE_CORE = 2
@@ -1301,6 +1304,8 @@ Shop.use = function use(path, package_context) {
   var info = resolve_module_info(path, package_context)
   var _ctx_dir2 = null
   var _alias2 = null
+  var _use_entry = path + ' (package: ' + package_context + ')'
+  var _chain = null
   if (!info) {
     log.shop(`Module '${path}' could not be found in package '${package_context}'`)
     _ctx_dir2 = package_context ? (starts_with(package_context, '/') ? package_context : get_packages_dir() + '/' + fd.safe_package_path(package_context)) : null
@@ -1311,13 +1316,32 @@ Shop.use = function use(path, package_context) {
     _alias2 = pkg_tools.split_alias(package_context, path)
     if (_alias2 == null && search(path, '/') != null)
       log.shop(`Alias '${array(path, '/')[0]}' could not be resolved in package '${package_context}'`)
+    if (length(use_stack) > 0) {
+      _chain = 'use() chain:'
+      arrfor(use_stack, function(frame) { _chain = _chain + '\n  -> ' + frame })
+      _chain = _chain + '\n  -> ' + path + ' [NOT FOUND]'
+      log.error(_chain)
+    }
     disrupt
   }
 
   if (use_cache[info.cache_key])
     return use_cache[info.cache_key]
-  use_cache[info.cache_key] = execute_module(info)
-  return use_cache[info.cache_key]
+
+  push(use_stack, _use_entry)
+  var _use_result = null
+  var _use_ok = false
+  var _load = function() {
+    _use_result = execute_module(info)
+    _use_ok = true
+  } disruption {
+    pop(use_stack)
+    disrupt
+  }
+  _load()
+  pop(use_stack)
+  use_cache[info.cache_key] = _use_result
+  return _use_result
 }
 
 // Resolve a use() module path to a filesystem path without compiling.
@@ -1856,6 +1880,30 @@ function get_package_scripts(package)
   return scripts
 }
 
+// Extract use() call arguments from source text.
+// Returns an array of literal string arguments found in use('...') calls.
+function extract_use_calls(source) {
+  var uses = []
+  var idx = 0
+  var start = 0
+  var end = 0
+  var arg = null
+  idx = search(source, "use(")
+  while (idx != null) {
+    start = idx + 5
+    end = search(text(source, start), "'")
+    if (end == null) end = search(text(source, start), '"')
+    if (end != null) {
+      arg = text(source, start, start + end)
+      push(uses, arg)
+    }
+    idx = search(text(source, idx + 4), "use(")
+    if (idx != null) idx = idx + (source.length - (source.length - idx))
+    else break
+  }
+  return uses
+}
+
 Shop.build_package_scripts = function(package)
 {
   // compiles all .ce and .cm files in a package
@@ -1879,6 +1927,63 @@ Shop.build_package_scripts = function(package)
   return {ok: ok, errors: errors, total: length(scripts)}
 }
 
+// Check if all use() calls in a package's scripts can be resolved.
+// Returns {ok, unresolved: [{script, module}], total}
+Shop.audit_use_resolution = function(package) {
+  var scripts = get_package_scripts(package)
+  var pkg_dir = starts_with(package, '/') ? package : get_package_abs_dir(package)
+  var unresolved = []
+  var checked = 0
+  var src = null
+  var content = null
+  var uses = null
+  var info = null
+
+  arrfor(scripts, function(script) {
+    var _check = function() {
+      src = pkg_dir + '/' + script
+      if (!fd.is_file(src)) return
+      content = text(fd.slurp(src))
+      if (!content || length(content) == 0) return
+
+      // Simple regex-free extraction: find use(' and use(" patterns
+      uses = []
+      var pos = 0
+      var rest = content
+      var ui = null
+      var quote = null
+      var end = null
+      var arg = null
+      while (length(rest) > 0) {
+        ui = search(rest, "use(")
+        if (ui == null) break
+        rest = text(rest, ui + 4)
+        if (length(rest) == 0) break
+        quote = text(rest, 0, 1)
+        if (quote != "'" && quote != '"') continue
+        rest = text(rest, 1)
+        end = search(rest, quote)
+        if (end == null) continue
+        arg = text(rest, 0, end)
+        if (length(arg) > 0) push(uses, arg)
+        rest = text(rest, end + 1)
+      }
+
+      arrfor(uses, function(mod) {
+        var _resolve = function() {
+          info = resolve_module_info(mod, package)
+          if (!info) push(unresolved, {script: script, module: mod})
+        } disruption {}
+        _resolve()
+      })
+      checked = checked + 1
+    } disruption {}
+    _check()
+  })
+
+  return {ok: checked, unresolved: unresolved, total: length(scripts)}
+}
+
 Shop.get_package_scripts = get_package_scripts
 
 Shop.list_packages = function()