test(catalog): give the Git publication tests room to finish

These drive real git processes against a local bare remote, so their cost
is process spawns competing with every other Vitest worker. Measured on
CI they take 23-30s each, and the 30s override was crossed by 37ms, so the
run failed on wall-clock rather than on behaviour.

Replace the three hand-picked 30_000 values with one documented constant
at 120_000, which keeps a genuine hang visible while clearing the observed
spread. The global default stays at 10s so nothing else is loosened.

src/lib/services/catalog-git-release.test.ts

@@ -54,6 +54,15 @@ async function fixture() {
 	return { options, git, manifestSource, source };
 }
 
+// Each test drives real `git` processes against a local bare remote: init,
+// pull --rebase, ls-files --stage, push and rev-parse. That is deliberately
+// real work, so the cost is process spawns competing with every other Vitest
+// worker for CPU. On CI these land at 23-30s each, which is why the default
+// 10s and even a hand-picked 30s are too tight; the first case measures two
+// publications to prove identical data does not create a second commit.
+// Keep the override well clear of a genuine hang.
+const GIT_PUBLICATION_TIMEOUT = 120_000;
+
 describe("catalog release Git publication", () => {
 	it("publishes exact files and does not create another commit for identical data", async () => {
 		const { options, git } = await fixture();
@@ -66,7 +75,7 @@ describe("catalog release Git publication", () => {
 				"utf8",
 			),
 		).toBe("asset\r\n");
-	}, 30_000);
+	}, GIT_PUBLICATION_TIMEOUT);
 	it("rejects a snapshot changed after manifest creation and restores a clean checkout", async () => {
 		const { options, source, git } = await fixture();
 		const head = git("rev-parse", "HEAD");
@@ -76,7 +85,7 @@ describe("catalog release Git publication", () => {
 		);
 		expect(git("rev-parse", "HEAD")).toBe(head);
 		expect(git("status", "--porcelain")).toBe("");
-	}, 30_000);
+	}, GIT_PUBLICATION_TIMEOUT);
 	it("rejects Git newline normalization before creating a commit", async () => {
 		const { options, git } = await fixture();
 		await writeFile(
@@ -92,5 +101,5 @@ describe("catalog release Git publication", () => {
 		);
 		expect(git("rev-parse", "HEAD")).toBe(head);
 		expect(git("status", "--porcelain")).toBe("");
-	}, 30_000);
+	}, GIT_PUBLICATION_TIMEOUT);
 });