Add /version endpoint with git hash for deploy verification

make_post_sell/routes.py

@@ -2,6 +2,7 @@ def includeme(config):
     config.add_static_view("static", "static", cache_max_age=3600)
     config.add_route("favicon", "/favicon.ico")
     config.add_route("robots", "/robots.txt")
+    config.add_route("version", "/version")
 
     # Sitemap and feed routes
     config.add_route("sitemap", "/sitemap.xml")

make_post_sell/views/version.py

@@ -0,0 +1,24 @@
+import subprocess
+
+from pyramid.response import Response
+from pyramid.view import view_config
+
+# Capture git hash once at process start.
+try:
+    GIT_HASH = (
+        subprocess.check_output(
+            ["git", "rev-parse", "--short", "HEAD"],
+            stderr=subprocess.DEVNULL,
+        )
+        .decode()
+        .strip()
+    )
+except Exception:
+    GIT_HASH = "unknown"
+
+VERSION = "1.1.5"
+
+
+@view_config(route_name="version", renderer="json")
+def version(request):
+    return {"version": VERSION, "hash": GIT_HASH}