Add version to health endpoint and startup log

- Add Version constant (v1.2) to server package
- Include version in /health endpoint response
- Log version on server startup

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: pierre-b

CHANGELOG.md

@@ -2,6 +2,13 @@
 
 All notable changes to this project will be documented in this file.
 
+## [v1.2] - 2025-11-28
+
+### Added
+
+- Version information in `/health` endpoint response: `{"status":"ok","version":"v1.2"}`
+- Version logged on server startup: `SelfhostS3 v1.2 starting on :9000`
+
 ## [v1.1] - 2025-11-28
 
 ### Fixed

internal/server/server.go

@@ -15,6 +15,9 @@ import (
 	"github.com/Notifuse/selfhost_s3/internal/storage"
 )
 
+// Version is the current version of selfhost_s3
+const Version = "v1.2"
+
 // Server represents the SelfhostS3 HTTP server
 type Server struct {
 	config  *config.Config
@@ -55,7 +58,7 @@ func (s *Server) Start() error {
 	mux.HandleFunc("/", s.handleRequest)
 
 	addr := fmt.Sprintf(":%d", s.config.Port)
-	log.Printf("SelfhostS3 starting on %s", addr)
+	log.Printf("SelfhostS3 %s starting on %s", Version, addr)
 	log.Printf("Bucket: %s", s.config.Bucket)
 	log.Printf("Storage path: %s", s.config.StoragePath)
 
@@ -101,7 +104,7 @@ func (s *Server) corsMiddleware(next http.Handler) http.Handler {
 func (s *Server) handleHealth(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Content-Type", "application/json")
 	w.WriteHeader(http.StatusOK)
-	_, _ = w.Write([]byte(`{"status":"ok"}`))
+	_, _ = w.Write([]byte(fmt.Sprintf(`{"status":"ok","version":"%s"}`, Version)))
 }
 
 // handleRequest routes S3 API requests

internal/server/server_test.go

@@ -171,8 +171,9 @@ func TestHealthEndpoint(t *testing.T) {
 	}
 
 	body, _ := io.ReadAll(resp.Body)
-	if string(body) != `{"status":"ok"}` {
-		t.Errorf("expected body {\"status\":\"ok\"}, got %q", string(body))
+	expectedBody := fmt.Sprintf(`{"status":"ok","version":"%s"}`, Version)
+	if string(body) != expectedBody {
+		t.Errorf("expected body %s, got %q", expectedBody, string(body))
 	}
 
 	if resp.Header.Get("Content-Type") != "application/json" {