test: speed up tests, fix transaction bug (#39030)

Speed up tests: `make test-backend` 103s to 37s, `make test-integration`
908s to 852s.

Most of it is a detached system notice insert blocking on the SQLite
write lock until the busy timeout expired, and `ExternalServiceHTTP`
re-probing on every call with an untimed `http.Get`.

- fixed one correctness bug with nested transactions: files were deleted
while the outer transaction was open, so a later failure could roll the
database back with the files gone
- git push branch counts were far above the hook batch size
- Fix makefile dependencies so running tests and lint work in fresh
worktrees.

---------

Co-authored-by: Giteabot <teabot@gitea.io>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

tools/lint-go-all.go

@@ -91,13 +91,21 @@ func main() {
 
 	_, _ = fmt.Fprintln(os.Stdout, "lint go header ...")
 	succeed := lintGoHeader()
+
 	_, _ = fmt.Fprintln(os.Stdout, "lint for linux ...")
-	succeed = runCmd([]string{"GOOS=linux", "TAGS=bindata"}, "golangci-lint", append([]string{"run", "--build-tags=linux,bindata"}, os.Args[1:]...)) && succeed
+	lintTagsLinux := ""
+	if os.Getenv("CI") != "" || strings.Contains(os.Getenv("TAGS"), "bindata") {
+		// also lint with bindata tag if we are in CI or the "bindata" is explicitly set in the env TAGS
+		lintTagsLinux = "bindata"
+	}
+	succeed = runCmd([]string{"GOOS=linux", "TAGS=" + lintTagsLinux}, "golangci-lint", append([]string{"run", "--build-tags=linux," + lintTagsLinux}, os.Args[1:]...)) && succeed
+
 	if os.Getenv("CI") != "" {
 		// only lint for other platforms when in CI, to keep local lint fast
 		_, _ = fmt.Fprintln(os.Stdout, "lint for windows ...")
 		succeed = runCmd([]string{"GOOS=windows", "TAGS=gogit"}, "golangci-lint", append([]string{"run", "--build-tags=windows,gogit"}, os.Args[1:]...)) && succeed
 	}
+
 	if !succeed {
 		os.Exit(1)
 	}