diff --git a/.golangci.yml b/.golangci.yml
index 2ad39fbae2c..483843bc55d 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -153,6 +153,7 @@ linters:
         text: '(?i)exitAfterDefer:'
     paths:
       - node_modules
+      - .venv
       - public
       - web_src
       - third_party$
@@ -172,6 +173,7 @@ formatters:
     generated: lax
     paths:
       - node_modules
+      - .venv
       - public
       - web_src
       - third_party$
diff --git a/Makefile b/Makefile
index 3d69fd972e4..e81dab7f6cb 100644
--- a/Makefile
+++ b/Makefile
@@ -258,7 +258,7 @@ clean: ## delete backend and integration files
 
 .PHONY: fmt
 fmt: ## format the Go and template code
-	@GOFUMPT_PACKAGE=$(GOFUMPT_PACKAGE) $(GO) run build/code-batch-process.go gitea-fmt -w '{file-list}'
+	@GOFUMPT_PACKAGE=$(GOFUMPT_PACKAGE) $(GO) run tools/code-batch-process.go gitea-fmt -w '{file-list}'
 	$(eval TEMPLATES := $(shell find templates -type f -name '*.tmpl'))
 	@# strip whitespace after '{{' or '(' and before '}}' or ')' unless there is only
 	@# whitespace before it
@@ -472,7 +472,7 @@ test\#%:
 coverage:
 	grep '^\(mode: .*\)\|\(.*:[0-9]\+\.[0-9]\+,[0-9]\+\.[0-9]\+ [0-9]\+ [0-9]\+\)$$' coverage.out > coverage-bodged.out
 	grep '^\(mode: .*\)\|\(.*:[0-9]\+\.[0-9]\+,[0-9]\+\.[0-9]\+ [0-9]\+ [0-9]\+\)$$' integration.coverage.out > integration.coverage-bodged.out
-	$(GO) run build/gocovmerge.go integration.coverage-bodged.out coverage-bodged.out > coverage.all
+	$(GO) run tools/gocovmerge.go integration.coverage-bodged.out coverage-bodged.out > coverage.all
 
 .PHONY: unit-test-coverage
 unit-test-coverage:
diff --git a/eslint.config.ts b/eslint.config.ts
index 02aacefca28..d9c4bcae3a6 100644
--- a/eslint.config.ts
+++ b/eslint.config.ts
@@ -49,6 +49,7 @@ export default defineConfig([
     },
     linterOptions: {
       reportUnusedDisableDirectives: 2,
+      reportUnusedInlineConfigs: 2,
     },
     plugins: {
       '@eslint-community/eslint-comments': comments,
diff --git a/tests/sqlite.ini.tmpl b/tests/sqlite.ini.tmpl
index f39888874f9..9d184bce6a7 100644
--- a/tests/sqlite.ini.tmpl
+++ b/tests/sqlite.ini.tmpl
@@ -114,7 +114,7 @@ ENABLED = true
 [markup.html]
 ENABLED = true
 FILE_EXTENSIONS = .html
-RENDER_COMMAND = go run build/test-echo.go
+RENDER_COMMAND = go run tools/test-echo.go
 ;RENDER_COMMAND = cat
 ;IS_INPUT_FILE = true
 RENDER_CONTENT_MODE = sanitized
diff --git a/build/code-batch-process.go b/tools/code-batch-process.go
similarity index 96%
rename from build/code-batch-process.go
rename to tools/code-batch-process.go
index 16d1273d967..2c7ccdf8a6c 100644
--- a/build/code-batch-process.go
+++ b/tools/code-batch-process.go
@@ -12,6 +12,7 @@ import (
 	"os/exec"
 	"path/filepath"
 	"regexp"
+	"slices"
 	"strconv"
 	"strings"
 
@@ -217,15 +218,6 @@ func newFileCollectorFromMainOptions(mainOptions map[string]string) (fc *fileCol
 	return newFileCollector(fileFilter, batchSize)
 }
 
-func containsString(a []string, s string) bool {
-	for _, v := range a {
-		if v == s {
-			return true
-		}
-	}
-	return false
-}
-
 func giteaFormatGoImports(files []string, doWriteFile bool) error {
 	for _, file := range files {
 		if err := codeformat.FormatGoImports(file, doWriteFile); err != nil {
@@ -264,10 +256,10 @@ func main() {
 		logVerbose("batch cmd: %s %v", subCmd, substArgs)
 		switch subCmd {
 		case "gitea-fmt":
-			if containsString(subArgs, "-d") {
+			if slices.Contains(subArgs, "-d") {
 				log.Print("the -d option is not supported by gitea-fmt")
 			}
-			cmdErrors = append(cmdErrors, giteaFormatGoImports(files, containsString(subArgs, "-w")))
+			cmdErrors = append(cmdErrors, giteaFormatGoImports(files, slices.Contains(subArgs, "-w")))
 			cmdErrors = append(cmdErrors, passThroughCmd("gofmt", append([]string{"-w", "-r", "interface{} -> any"}, substArgs...)))
 			cmdErrors = append(cmdErrors, passThroughCmd("go", append([]string{"run", os.Getenv("GOFUMPT_PACKAGE"), "-extra"}, substArgs...)))
 		default:
diff --git a/build/gocovmerge.go b/tools/gocovmerge.go
similarity index 100%
rename from build/gocovmerge.go
rename to tools/gocovmerge.go
diff --git a/build/test-echo.go b/tools/test-echo.go
similarity index 100%
rename from build/test-echo.go
rename to tools/test-echo.go