🐛(makefile) Windows compatibility fix for Docker volume mounting

On Windows systems, Docker volume paths starting
with a single / can be interpreted incorrectly
by the Docker daemon. The double slash (//) helps
Docker on Windows properly interpret the path as
an absolute path within the container, ensuring
that the working directory is correctly set
when running mail-related yarn commands.

CHANGELOG.md

@@ -18,6 +18,11 @@ and this project adheres to
   - #1244
   - #1270
 
+### Fixed
+
+- 🐛(makefile) Windows compatibility fix for Docker volume mounting #1264
+
+
 ## [3.5.0] - 2025-07-31
 
 ### Added

Makefile

@@ -48,7 +48,7 @@ COMPOSE_RUN_CROWDIN = $(COMPOSE_RUN) crowdin crowdin
 
 # -- Backend
 MANAGE              = $(COMPOSE_RUN_APP) python manage.py
-MAIL_YARN           = $(COMPOSE_RUN) -w /app/src/mail node yarn
+MAIL_YARN           = $(COMPOSE_RUN) -w //app/src/mail node yarn
 
 # -- Frontend
 PATH_FRONT          = ./src/frontend