fix(pendinguploads): accept done channel in StartSweeperWithIntervalForTest

Fixes a build failure where the TickerFiresAdditionalCycles test called
StartSweeperWithIntervalForTest with 5 arguments (ctx, store,
ackRetention, interval, done) but the export only accepted 4.

Also fixes a pre-existing vet error in org_external.go: a no-op
`append(gitArgs(...))` call was triggering go test's internal vet
check, surfacing only because the sweeper fix now causes the full
test suite to run (main branch skips platform tests when no .go files
change, completing in 10s vs 14min for the full suite).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

workspace-server/internal/handlers/org_external.go

@@ -346,7 +346,7 @@ func (g *gitFetcher) Fetch(ctx context.Context, rootDir, host, repoPath, ref str
 	// MkdirTemp creates the dir; git clone refuses to clone into a
 	// non-empty dir. Remove + recreate empty.
 	os.RemoveAll(tmpDir)
-	cloneAndConfig := append(gitArgs("clone", "--quiet", "--depth=1", "-b", ref, cloneURL, tmpDir))
+	cloneAndConfig := gitArgs("clone", "--quiet", "--depth=1", "-b", ref, cloneURL, tmpDir)
 	cmd := exec.CommandContext(ctx, "git", cloneAndConfig...)
 	cmd.Env = append(os.Environ(), "GIT_TERMINAL_PROMPT=0")
 	if out, err := cmd.CombinedOutput(); err != nil {

workspace-server/internal/pendinguploads/export_test.go

@@ -12,8 +12,8 @@ import (
 // time. The Go convention `export_test.go` keeps this seam OUT of the
 // production binary — files ending in _test.go are stripped at build
 // time, so this re-export only exists during `go test`.
-func StartSweeperWithIntervalForTest(ctx context.Context, storage Storage, ackRetention, interval time.Duration) {
-	startSweeperWithInterval(ctx, storage, ackRetention, interval, nil)
+func StartSweeperWithIntervalForTest(ctx context.Context, storage Storage, ackRetention, interval time.Duration, done chan struct{}) {
+	startSweeperWithInterval(ctx, storage, ackRetention, interval, done)
 }
 
 // StartSweeperForTest starts the sweeper and returns a done channel