diff --git a/mempalace/entity_detector.py b/mempalace/entity_detector.py
index c70dd576bd..17b5a2d793 100644
--- a/mempalace/entity_detector.py
+++ b/mempalace/entity_detector.py
@@ -39,6 +39,7 @@
 from collections import defaultdict
 
 from mempalace.i18n import get_entity_patterns
+from mempalace.readable_extensions import ENTITY_DETECTOR_READABLE_EXTENSIONS
 
 
 # ==================== LANGUAGE-AWARE PATTERN LOADING ====================
@@ -88,23 +89,7 @@ def _get_stopwords(languages: tuple) -> frozenset:
     ".csv",
 }
 
-READABLE_EXTENSIONS = {
-    ".txt",
-    ".md",
-    ".py",
-    ".js",
-    ".ts",
-    ".json",
-    ".yaml",
-    ".yml",
-    ".csv",
-    ".rst",
-    ".toml",
-    ".sh",
-    ".rb",
-    ".go",
-    ".rs",
-}
+READABLE_EXTENSIONS = ENTITY_DETECTOR_READABLE_EXTENSIONS
 
 SKIP_DIRS = {
     ".git",
diff --git a/mempalace/miner.py b/mempalace/miner.py
index ba0c630631..0d2c8754af 100644
--- a/mempalace/miner.py
+++ b/mempalace/miner.py
@@ -30,30 +30,9 @@
     purge_file_closets,
     upsert_closet_lines,
 )
+from .readable_extensions import MINER_READABLE_EXTENSIONS
 
-READABLE_EXTENSIONS = {
-    ".txt",
-    ".md",
-    ".py",
-    ".js",
-    ".ts",
-    ".jsx",
-    ".tsx",
-    ".json",
-    ".jsonl",
-    ".yaml",
-    ".yml",
-    ".html",
-    ".css",
-    ".java",
-    ".go",
-    ".rs",
-    ".rb",
-    ".sh",
-    ".csv",
-    ".sql",
-    ".toml",
-}
+READABLE_EXTENSIONS = MINER_READABLE_EXTENSIONS
 
 SKIP_FILENAMES = {
     "entities.json",
diff --git a/mempalace/readable_extensions.py b/mempalace/readable_extensions.py
new file mode 100644
index 0000000000..8c121917f8
--- /dev/null
+++ b/mempalace/readable_extensions.py
@@ -0,0 +1,65 @@
+"""Shared readable-extension sets used by mining and entity detection."""
+
+BASE_READABLE_EXTENSIONS = {
+    ".txt",
+    ".md",
+    ".py",
+    ".js",
+    ".ts",
+    ".json",
+    ".yaml",
+    ".yml",
+    ".csv",
+    ".toml",
+    ".sh",
+    ".rb",
+    ".go",
+    ".rs",
+    ".c",
+    ".cc",
+    ".cpp",
+    ".cxx",
+    ".h",
+    ".hh",
+    ".hpp",
+    ".hxx",
+    ".ipp",
+    ".inl",
+    ".m",
+    ".mm",
+    ".cs",
+    ".csproj",
+    ".props",
+    ".sln",
+    ".vcxproj",
+    ".kt",
+    ".kts",
+    ".erl",
+    ".hrl",
+    ".nix",
+    ".cmake",
+    ".gn",
+    ".gni",
+    ".proto",
+    ".ps1",
+    ".mdx",
+    ".patch",
+    ".ex",
+    ".exs",
+    ".eex",
+    ".heex",
+}
+
+ENTITY_DETECTOR_READABLE_EXTENSIONS = BASE_READABLE_EXTENSIONS | {
+    ".rst",
+}
+
+MINER_READABLE_EXTENSIONS = BASE_READABLE_EXTENSIONS | {
+    ".jsx",
+    ".tsx",
+    ".jsonl",
+    ".html",
+    ".css",
+    ".java",
+    ".sql",
+}