fix: use uppercase state values for Bitbucket CLI --state argument

The Bitbucket CLI expects uppercase state values (OPEN, MERGED, DECLINED, etc.)
for the --state flag. toBitbucketState was returning lowercase values which would
cause filtering to silently fail. Updated to return uppercase values and fixed
the corresponding test assertion.

Author: cursoragent

apps/server/src/sourceControl/BitbucketCli.test.ts

@@ -141,7 +141,7 @@ describe("BitbucketCli.layer", () => {
           "--head",
           "feature/merged",
           "--state",
-          "merged",
+          "MERGED",
           "--limit",
           "10",
           "--json",

apps/server/src/sourceControl/BitbucketCli.ts

@@ -161,13 +161,13 @@ function sourceBranch(input: {
 function toBitbucketState(state: "open" | "closed" | "merged" | "all"): string {
   switch (state) {
     case "open":
-      return "open";
+      return "OPEN";
     case "closed":
-      return "declined";
+      return "DECLINED";
     case "merged":
-      return "merged";
+      return "MERGED";
     case "all":
-      return "all";
+      return "ALL";
   }
 }