feat(backend): implement task creation and admin web

backend-api/internal/config/config_test.go

@@ -18,6 +18,9 @@ func TestLoadUsesSafeDefaults(t *testing.T) {
 	if cfg.DatabasePath != filepath.FromSlash("var/cmroubao.db") {
 		t.Fatalf("DatabasePath = %q", cfg.DatabasePath)
 	}
+	if cfg.AssetDirectory != filepath.FromSlash("var/assets") {
+		t.Fatalf("AssetDirectory = %q", cfg.AssetDirectory)
+	}
 	if cfg.ReadHeaderTimeout <= 0 ||
 		cfg.ReadTimeout <= 0 ||
 		cfg.WriteTimeout <= 0 ||
@@ -33,8 +36,9 @@ func TestLoadUsesSafeDefaults(t *testing.T) {
 
 func TestLoadAcceptsExplicitConfiguration(t *testing.T) {
 	values := map[string]string{
-		HTTPAddressEnvironment:  "192.0.2.10:9090",
-		DatabasePathEnvironment: "tmp/test.db",
+		HTTPAddressEnvironment:    "192.0.2.10:9090",
+		DatabasePathEnvironment:   "tmp/test.db",
+		AssetDirectoryEnvironment: "tmp/assets",
 	}
 
 	cfg, err := Load(mapEnvironment(values))
@@ -48,6 +52,9 @@ func TestLoadAcceptsExplicitConfiguration(t *testing.T) {
 	if cfg.DatabasePath != filepath.Clean(values[DatabasePathEnvironment]) {
 		t.Fatalf("DatabasePath = %q", cfg.DatabasePath)
 	}
+	if cfg.AssetDirectory != filepath.Clean(values[AssetDirectoryEnvironment]) {
+		t.Fatalf("AssetDirectory = %q", cfg.AssetDirectory)
+	}
 }
 
 func TestLoadRejectsUnsafeOrInvalidValues(t *testing.T) {
@@ -97,6 +104,18 @@ func TestLoadRejectsUnsafeOrInvalidValues(t *testing.T) {
 				DatabasePathEnvironment: "var/database.txt",
 			},
 		},
+		{
+			name: "asset root directory",
+			values: map[string]string{
+				AssetDirectoryEnvironment: string(filepath.Separator),
+			},
+		},
+		{
+			name: "asset current directory",
+			values: map[string]string{
+				AssetDirectoryEnvironment: ".",
+			},
+		},
 	}
 
 	for _, test := range tests {