diff --git a/.github/workflows/branch-name.yml b/.github/workflows/branch-name.yml
index e80c3ac..58c449c 100644
--- a/.github/workflows/branch-name.yml
+++ b/.github/workflows/branch-name.yml
@@ -13,13 +13,6 @@ jobs:
   branch-name:
     runs-on: ubuntu-latest
     steps:
-      - name: Check out Issue Type mapping
-        uses: actions/checkout@v4
-        with:
-          sparse-checkout: |
-            scripts/issue-type.mjs
-          sparse-checkout-cone-mode: false
-
       - name: Validate source branch name
         env:
           BRANCH_NAME: ${{ github.head_ref }}
@@ -35,34 +28,22 @@ jobs:
           echo "Branch name valid: ${BRANCH_NAME}"
 
       - name: Validate linked issue
-        uses: actions/github-script@v7
+        uses: actions/github-script@v8
         with:
           script: |
-            const path = require("node:path");
-            const { pathToFileURL } = require("node:url");
-            const {
-              BRANCH_ISSUE_PATTERN,
-              PR_TITLE_PATTERN,
-              closingReferencePattern,
-              expectedIssueTypeFor,
-              validateIssueType,
-            } = await import(
-              pathToFileURL(
-                path.join(process.env.GITHUB_WORKSPACE, "scripts/issue-type.mjs"),
-              ).href,
-            );
-
             const branch = context.payload.pull_request.head.ref;
-            const branchMatch = BRANCH_ISSUE_PATTERN.exec(branch);
+            const branchMatch = /^(?:feat|fix|refactor|docs|chore)\/(\d+)-/.exec(branch);
+
             if (!branchMatch) {
               core.setFailed(`Could not extract issue number from branch '${branch}'.`);
               return;
             }
 
-            const [, type, issueNumber] = branchMatch;
-            const expectedIssueType = expectedIssueTypeFor(type);
+            const [, issueNumber] = branchMatch;
             const pullRequest = context.payload.pull_request;
-            const titleMatch = PR_TITLE_PATTERN.exec(pullRequest.title.trim());
+            const titleMatch = /^\[(?:feat|fix|refactor|docs|chore)\]\s+(.+?)\s+\(#(\d+)\)$/.exec(
+              pullRequest.title.trim(),
+            );
 
             if (!titleMatch) {
               core.setFailed(
@@ -71,14 +52,7 @@ jobs:
               return;
             }
 
-            const [, titleType, , titleIssueNumber] = titleMatch;
-            if (titleType !== type) {
-              core.setFailed(
-                `PR title type '${titleType}' must match branch type '${type}'.`,
-              );
-              return;
-            }
-
+            const [, , titleIssueNumber] = titleMatch;
             if (titleIssueNumber !== issueNumber) {
               core.setFailed(
                 `PR title issue number #${titleIssueNumber} must match branch issue #${issueNumber}.`,
@@ -86,30 +60,19 @@ jobs:
               return;
             }
 
-            const text = `${pullRequest.title}\n${pullRequest.body ?? ""}`;
-            const closingKeyword = closingReferencePattern(issueNumber);
-            if (!closingKeyword.test(text)) {
-              core.setFailed(
-                `PR must include 'Fixes #${issueNumber}' (or an equivalent closing keyword).`,
-              );
+            const closingKeyword = new RegExp(
+              `(?:close[sd]?|fix(?:e[sd])?|resolve[sd]?)\\s+#${issueNumber}\\b`,
+              "i",
+            );
+            if (!closingKeyword.test(pullRequest.body ?? "")) {
+              core.setFailed(`PR body must reference the linked issue with a closing keyword, such as 'Fixes #${issueNumber}'.`);
               return;
             }
 
-            const { data: issue } = await github.rest.issues.get({
+            await github.rest.issues.get({
               owner: context.repo.owner,
               repo: context.repo.repo,
               issue_number: Number(issueNumber),
             });
-            const actualIssueType = issue.type?.name ?? null;
-            const issueTypeCheck = validateIssueType(type, actualIssueType);
-
-            if (!issueTypeCheck.ok) {
-              core.setFailed(
-                `Issue #${issueNumber} must use native GitHub Issue Type '${expectedIssueType}' for branch '${type}', but found '${actualIssueType ?? "none"}'.`,
-              );
-              return;
-            }
 
-            core.info(
-              `PR linked Issue #${issueNumber} uses native GitHub Issue Type '${actualIssueType}'. Legacy type:* labels are not required.`,
-            );
+            core.info(`Linked issue #${issueNumber} validated.`);
diff --git a/scripts/cleanup-merged.mjs b/scripts/cleanup-merged.mjs
index 63fb7ad..12e594b 100644
--- a/scripts/cleanup-merged.mjs
+++ b/scripts/cleanup-merged.mjs
@@ -402,7 +402,7 @@ async function main() {
     }
 
     console.log(`Deleting local branch ${item.branch}...`);
-    runGit(["branch", "-d", "--", item.branch], { cwd: repoRoot });
+    runGit(["branch", "-D", "--", item.branch], { cwd: repoRoot });
   }
 
   console.log("Cleanup complete.");
diff --git a/scripts/cleanup-merged.test.mjs b/scripts/cleanup-merged.test.mjs
index dc75634..4c70cd8 100644
--- a/scripts/cleanup-merged.test.mjs
+++ b/scripts/cleanup-merged.test.mjs
@@ -166,3 +166,24 @@ test("prunes missing worktree registrations without deleting unmerged branches",
     removeRepository(repo, linkedPath);
   }
 });
+
+test("deletes branches merged into the selected base even when HEAD differs", () => {
+  const repo = createRepository();
+
+  try {
+    git(repo, ["checkout", "-b", "chore/current"]);
+    git(repo, ["checkout", "--quiet", "main"]);
+    git(repo, ["checkout", "-b", "chore/merged-elsewhere"]);
+    commitFile(repo, "merged-elsewhere.txt", "merged into main\n");
+    mergeBranch(repo, "chore/merged-elsewhere");
+    git(repo, ["checkout", "--quiet", "chore/current"]);
+
+    const result = runCleanup(repo, ["--base", "main", "--yes"]);
+
+    assert.equal(result.status, 0, result.stderr);
+    assert.equal(branchExists(repo, "chore/merged-elsewhere"), false);
+    assert.equal(git(repo, ["branch", "--show-current"]), "chore/current");
+  } finally {
+    removeRepository(repo, "");
+  }
+});