fix: add postcss resolutions override to address CVE-2026-41305

Co-authored-by: Brendan Kellam <brendan@sourcebot.dev>

Author: cursoragent

package.json

@@ -59,6 +59,7 @@
         "smol-toml@npm:^1.6.0": "^1.6.1",
         "teeny-request@npm:^10.0.0": "^10.1.2",
         "uuid": "^14.0.0",
-        "fast-uri@npm:^3.0.1": "^3.1.2"
+        "fast-uri@npm:^3.0.1": "^3.1.2",
+        "postcss@npm:8.4.31": "^8.5.10"
     }
 }

yarn.lock

@@ -17188,7 +17188,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"nanoid@npm:^3.3.11, nanoid@npm:^3.3.6":
+"nanoid@npm:^3.3.11":
   version: 3.3.11
   resolution: "nanoid@npm:3.3.11"
   bin:
@@ -18392,17 +18392,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"postcss@npm:8.4.31":
-  version: 8.4.31
-  resolution: "postcss@npm:8.4.31"
-  dependencies:
-    nanoid: "npm:^3.3.6"
-    picocolors: "npm:^1.0.0"
-    source-map-js: "npm:^1.0.2"
-  checksum: 10c0/748b82e6e5fc34034dcf2ae88ea3d11fd09f69b6c50ecdd3b4a875cfc7cdca435c958b211e2cb52355422ab6fccb7d8f2f2923161d7a1b281029e4a913d59acf
-  languageName: node
-  linkType: hard
-
 "postcss@npm:^8.4.47, postcss@npm:^8.5.10, postcss@npm:^8.5.8":
   version: 8.5.12
   resolution: "postcss@npm:8.5.12"
@@ -20595,7 +20584,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"source-map-js@npm:^1.0.2, source-map-js@npm:^1.2.1":
+"source-map-js@npm:^1.2.1":
   version: 1.2.1
   resolution: "source-map-js@npm:1.2.1"
   checksum: 10c0/7bda1fc4c197e3c6ff17de1b8b2c20e60af81b63a52cb32ec5a5d67a20a7d42651e2cb34ebe93833c5a2a084377e17455854fee3e21e7925c64a51b6a52b0faf