Squashed commit of the following:

commit deecf669d3
Author: Kalista Payne <kalista@habitica.com>
Date:   Wed Aug 13 17:37:41 2025 -0500

    fix(background): *inside* forest witchs cottage

commit 977ebb5b78
Author: Kalista Payne <kalista@habitica.com>
Date:   Wed Aug 13 17:08:05 2025 -0500

    feat(content): October and November releases

commit fe46733a61
Author: Kalista Payne <kalista@habitica.com>
Date:   Tue Aug 12 17:06:59 2025 -0500

    fix(content): missing strings and release dates

commit fd4d69be71
Author: Kalista Payne <kalista@habitica.com>
Date:   Tue Aug 12 16:51:06 2025 -0500

    chore(sprites): compile, update subproj

commit c055213790
Author: Kalista Payne <kalista@habitica.com>
Date:   Tue Aug 12 16:49:14 2025 -0500

    feat(content): September 2025 Gala and monthly

website/common/script/content/gear/sets/mystery.js

@@ -70,6 +70,7 @@ const armor = {
   202412: { },
   202502: { },
   202504: { },
+  202509: { },
   301404: { },
   301703: { },
   301704: { },
@@ -117,6 +118,7 @@ const back = {
   202505: { },
   202506: { },
   202507: { },
+  202510: { },
 };
 
 const body = {
@@ -129,6 +131,7 @@ const body = {
   202008: { },
   202107: { },
   202411: { },
+  202509: { },
 };
 
 const eyewear = {
@@ -149,6 +152,7 @@ const eyewear = {
   202312: { },
   202406: { },
   202503: { },
+  202510: { },
   301404: { },
   301405: { },
   301703: { },
@@ -298,6 +302,7 @@ const shield = {
   202502: { },
   202506: { },
   202508: { },
+  202511: { },
   301405: { },
   301704: { },
 };
@@ -324,6 +329,7 @@ const weapon = {
   202404: { twoHanded: true },
   202408: { },
   202508: { },
+  202511: { },
   301404: { },
 };