diff --git a/src/algorithms/searching/__init__.py b/src/algorithms/searching/__init__.py
new file mode 100644
index 0000000..3b66995
--- /dev/null
+++ b/src/algorithms/searching/__init__.py
@@ -0,0 +1,40 @@
+"""
+Searching algorithms (lightweight top-level namespace).
+
+Provides lazy accessors for submodules to avoid circular import issues.
+"""
+
+from importlib import import_module
+from typing import Any
+
+__all__ = [
+    "advanced_search",
+    "binary_search",
+    "linear_search",
+    "quickselect",
+]
+
+
+def __getattr__(name: str) -> Any:
+    """
+    Lazily import and expose searching submodules as attributes:
+      - advanced_search
+      - binary_search
+      - linear_search
+      - quickselect
+    """
+    if name in __all__:
+        import sys
+
+        canonical = f"interview_workbook.algorithms.searching.{name}"
+        # If already imported under canonical path, reuse it to avoid reload/circulars
+        if canonical in sys.modules:
+            return sys.modules[canonical]
+        # Try canonical import first
+        try:
+            return import_module(canonical)
+        except ModuleNotFoundError:
+            # Fallback to local under src/ if present
+            local = f"{__name__}.{name}"
+            return import_module(local)
+    raise AttributeError(f"module '{__name__}' has no attribute '{name}'")
diff --git a/src/algorithms/searching/advanced_search.py b/src/algorithms/searching/advanced_search.py
new file mode 100644
index 0000000..7a751de
--- /dev/null
+++ b/src/algorithms/searching/advanced_search.py
@@ -0,0 +1,3 @@
+# Proxy module to expose interview_workbook searching under src.algorithms.searching.*
+# This enables tests importing src.algorithms.searching.* to resolve correctly.
+from interview_workbook.algorithms.searching.advanced_search import *  # noqa: F401,F403
diff --git a/src/algorithms/searching/binary_search.py b/src/algorithms/searching/binary_search.py
new file mode 100644
index 0000000..a0a039b
--- /dev/null
+++ b/src/algorithms/searching/binary_search.py
@@ -0,0 +1,3 @@
+# Proxy module to expose interview_workbook searching under src.algorithms.searching.*
+# This enables tests importing src.algorithms.searching.* to resolve correctly.
+from interview_workbook.algorithms.searching.binary_search import *  # noqa: F401,F403
diff --git a/src/algorithms/searching/linear_search.py b/src/algorithms/searching/linear_search.py
new file mode 100644
index 0000000..703f984
--- /dev/null
+++ b/src/algorithms/searching/linear_search.py
@@ -0,0 +1,3 @@
+# Proxy module to expose interview_workbook searching under src.algorithms.searching.*
+# This enables tests importing src.algorithms.searching.* to resolve correctly.
+from interview_workbook.algorithms.searching.linear_search import *  # noqa: F401,F403
diff --git a/src/algorithms/searching/quickselect.py b/src/algorithms/searching/quickselect.py
new file mode 100644
index 0000000..5c5c722
--- /dev/null
+++ b/src/algorithms/searching/quickselect.py
@@ -0,0 +1,3 @@
+# Proxy module to expose interview_workbook searching under src.algorithms.searching.*
+# This enables tests importing src.algorithms.searching.* to resolve correctly.
+from interview_workbook.algorithms.searching.quickselect import *  # noqa: F401,F403
diff --git a/src/algorithms/sorting/__init__.py b/src/algorithms/sorting/__init__.py
index 8c76a31..8cf8346 100644
--- a/src/algorithms/sorting/__init__.py
+++ b/src/algorithms/sorting/__init__.py
@@ -9,8 +9,11 @@
 
 __all__ = [
     "bubble_sort",
+    "heap_sort",
     "insertion_sort",
+    "merge_sort",
     "non_comparison_sorts",
+    "quick_sort",
     "selection_sort",
 ]
 
@@ -19,9 +22,12 @@ def __getattr__(name: str) -> Any:
     """
     Lazily import and expose sorting submodules as attributes:
       - bubble_sort
+      - heap_sort
       - insertion_sort
-      - selection_sort
+      - merge_sort
       - non_comparison_sorts
+      - quick_sort
+      - selection_sort
     """
     if name in __all__:
         import sys
diff --git a/src/algorithms/sorting/heap_sort.py b/src/algorithms/sorting/heap_sort.py
new file mode 100644
index 0000000..f33066e
--- /dev/null
+++ b/src/algorithms/sorting/heap_sort.py
@@ -0,0 +1,3 @@
+# Proxy module to expose interview_workbook sorting under src.algorithms.sorting.*
+# This enables tests importing src.algorithms.sorting.* to resolve correctly.
+from interview_workbook.algorithms.sorting.heap_sort import *  # noqa: F401,F403
diff --git a/src/algorithms/sorting/merge_sort.py b/src/algorithms/sorting/merge_sort.py
new file mode 100644
index 0000000..e50b421
--- /dev/null
+++ b/src/algorithms/sorting/merge_sort.py
@@ -0,0 +1,3 @@
+# Proxy module to expose interview_workbook sorting under src.algorithms.sorting.*
+# This enables tests importing src.algorithms.sorting.* to resolve correctly.
+from interview_workbook.algorithms.sorting.merge_sort import *  # noqa: F401,F403
diff --git a/src/algorithms/sorting/quick_sort.py b/src/algorithms/sorting/quick_sort.py
new file mode 100644
index 0000000..3dc4c7e
--- /dev/null
+++ b/src/algorithms/sorting/quick_sort.py
@@ -0,0 +1,3 @@
+# Proxy module to expose interview_workbook sorting under src.algorithms.sorting.*
+# This enables tests importing src.algorithms.sorting.* to resolve correctly.
+from interview_workbook.algorithms.sorting.quick_sort import *  # noqa: F401,F403