fix(server): honor configured commit signing (#3976)

Paseo forced signing off for commits created through the app and squash merges. Let Git apply the user's configured policy; the existing command timeout still bounds interactive signer waits.

Co-authored-by: paseo-bot[bot] <266920839+paseo-bot[bot]@users.noreply.github.com>

packages/server/src/utils/checkout-git.test.ts

@@ -521,6 +521,14 @@ describe("checkout git utilities", () => {
     expect(message).toBe("update file");
   });
 
+  it("honors commit signing configuration", async () => {
+    execFileSync("git", ["config", "commit.gpgsign", "true"], { cwd: repoDir });
+    execFileSync("git", ["config", "gpg.program", process.execPath], { cwd: repoDir });
+    writeFileSync(join(repoDir, "file.txt"), "signed\n");
+
+    await expect(commitAll(repoDir, "signed update")).rejects.toThrow("failed to sign the data");
+  });
+
   it("includes both paths for a staged rename in structured diffs", async () => {
     execFileSync("git", ["mv", "file.txt", "renamed.txt"], { cwd: repoDir });
 
@@ -3530,6 +3538,21 @@ const x = 1;
     );
   });
 
+  it("honors commit signing configuration for squash merges", async () => {
+    execFileSync("git", ["checkout", "-b", "feature"], { cwd: repoDir });
+    writeFileSync(join(repoDir, "feature.txt"), "feature\n");
+    execFileSync("git", ["add", "feature.txt"], { cwd: repoDir });
+    execFileSync("git", ["-c", "commit.gpgsign=false", "commit", "-m", "feature commit"], {
+      cwd: repoDir,
+    });
+    execFileSync("git", ["config", "commit.gpgsign", "true"], { cwd: repoDir });
+    execFileSync("git", ["config", "gpg.program", process.execPath], { cwd: repoDir });
+
+    await expect(mergeToBase(repoDir, { baseRef: "main", mode: "squash" })).rejects.toThrow(
+      "failed to sign the data",
+    );
+  });
+
   it("uses stored baseRefName for Paseo worktrees (no heuristics)", async () => {
     // Create a non-default base branch with a unique commit.
     execFileSync("git", ["checkout", "-b", "develop"], { cwd: repoDir });

packages/server/src/utils/checkout-git.ts

@@ -3387,7 +3387,7 @@ export async function commitChanges(
   if (options.addAll ?? true) {
     await runGitCommand(["add", "-A"], { cwd, timeout: 120_000 });
   }
-  await runGitCommand(["-c", "commit.gpgsign=false", "commit", "-m", options.message], {
+  await runGitCommand(["commit", "-m", options.message], {
     cwd,
     timeout: 120_000,
   });
@@ -3565,7 +3565,7 @@ export async function mergeToBase(
       });
       const message =
         options.commitMessage ?? `Squash merge ${currentBranch} into ${normalizedBaseRef}`;
-      await runGitCommand(["-c", "commit.gpgsign=false", "commit", "-m", message], {
+      await runGitCommand(["commit", "-m", message], {
         cwd: operationCwd,
         timeout: 120_000,
       });