Merge branch 'development' into Database-Schema-&-Models

Resolved conflicts by keeping Database-Schema-&-Models version which contains:
- Complete Phase 7 documentation polish (ELI5 style)
- GitHub Actions CI/CD workflows (Docker + Pages)
- GHCR migration (replacing Docker Hub)
- All backend and frontend improvements

backend/internal/api/handlers/health_handler.go

@@ -0,0 +1,19 @@
+package handlers
+
+import (
+	"net/http"
+
+	"github.com/Wikid82/CaddyProxyManagerPlus/backend/internal/version"
+	"github.com/gin-gonic/gin"
+)
+
+// HealthHandler responds with basic service metadata for uptime checks.
+func HealthHandler(c *gin.Context) {
+	c.JSON(http.StatusOK, gin.H{
+		"status":     "ok",
+		"service":    version.Name,
+		"version":    version.SemVer,
+		"git_commit": version.GitCommit,
+		"build_date": version.BuildDate,
+	})
+}

backend/internal/api/handlers/proxy_host_handler_test.go

@@ -0,0 +1,56 @@
+package handlers
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"github.com/gin-gonic/gin"
+	"github.com/stretchr/testify/require"
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+
+	"github.com/Wikid82/CaddyProxyManagerPlus/backend/internal/models"
+)
+
+func setupTestRouter(t *testing.T) (*gin.Engine, *gorm.DB) {
+	t.Helper()
+
+	db, err := gorm.Open(sqlite.Open("file::memory:?cache=shared"), &gorm.Config{})
+	require.NoError(t, err)
+	require.NoError(t, db.AutoMigrate(&models.ProxyHost{}))
+
+	h := NewProxyHostHandler(db)
+	r := gin.New()
+	api := r.Group("/api/v1")
+	h.RegisterRoutes(api)
+
+	return r, db
+}
+
+func TestProxyHostLifecycle(t *testing.T) {
+	router, _ := setupTestRouter(t)
+
+	body := `{"name":"Media","domain":"media.example.com","target_scheme":"http","target_host":"media","target_port":32400}`
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/proxy-hosts", strings.NewReader(body))
+	req.Header.Set("Content-Type", "application/json")
+
+	resp := httptest.NewRecorder()
+	router.ServeHTTP(resp, req)
+	require.Equal(t, http.StatusCreated, resp.Code)
+
+	var created models.ProxyHost
+	require.NoError(t, json.Unmarshal(resp.Body.Bytes(), &created))
+	require.Equal(t, "media.example.com", created.Domain)
+
+	listReq := httptest.NewRequest(http.MethodGet, "/api/v1/proxy-hosts", nil)
+	listResp := httptest.NewRecorder()
+	router.ServeHTTP(listResp, listReq)
+	require.Equal(t, http.StatusOK, listResp.Code)
+
+	var hosts []models.ProxyHost
+	require.NoError(t, json.Unmarshal(listResp.Body.Bytes(), &hosts))
+	require.Len(t, hosts, 1)
+}