diff --git a/src/shared/paths.test.ts b/src/shared/paths.test.ts
index 95780e4..601166a 100644
--- a/src/shared/paths.test.ts
+++ b/src/shared/paths.test.ts
@@ -11,4 +11,14 @@ describe('encodeProjectPath', () => {
     expect(encodeProjectPath('C:\\Users\\dev\\Documents\\GitHub'))
       .toBe('C--Users-dev-Documents-GitHub');
   });
+
+  it('replaces spaces the way Claude does (folder names with spaces)', () => {
+    expect(encodeProjectPath('C:\\Users\\dev\\Documents\\GitHub\\Youtube Lythem Game'))
+      .toBe('C--Users-dev-Documents-GitHub-Youtube-Lythem-Game');
+  });
+
+  it('replaces dots and other non-alphanumerics with a dash', () => {
+    expect(encodeProjectPath('C:\\Users\\dev\\repo\\.claude\\worktrees\\vibe-music'))
+      .toBe('C--Users-dev-repo--claude-worktrees-vibe-music');
+  });
 });
diff --git a/src/shared/paths.ts b/src/shared/paths.ts
index 7769805..c11247f 100644
--- a/src/shared/paths.ts
+++ b/src/shared/paths.ts
@@ -1,4 +1,9 @@
-/** Replace every ':' and '\' with '-' to match Claude's ~/.claude/projects dir name. */
+/**
+ * Encode an absolute path the way Claude names its ~/.claude/projects dir:
+ * every non-alphanumeric character (drive colon, path separators, spaces, dots,
+ * …) becomes '-'. Replacing only ':' and '\' missed folders whose names contain
+ * spaces or dots, so their usage/sessions silently went unmatched.
+ */
 export function encodeProjectPath(absPath: string): string {
-  return absPath.replace(/[:\\]/g, '-');
+  return absPath.replace(/[^a-zA-Z0-9]/g, '-');
 }