Simplify seed data configuration by removing command line flags and renaming environment variable (#175)

This PR simplifies the seed data import configuration based on
maintainer feedback by removing command line flags and using a clearer
environment variable name.

## Key Changes

### Configuration Simplification
- **Renamed**: `MCP_REGISTRY_SEED_FILE_PATH` → `MCP_REGISTRY_SEED_FROM`
- **Removed**: `--seed-file-path` command line flag to eliminate
configuration complexity

### Improved User Experience
Users now configure seed data import using a single, clear environment
variable:

```bash
# Before (multiple ways to configure)
MCP_REGISTRY_SEED_FILE_PATH=data/seed.json ./registry
./registry --seed-file-path=data/seed.json

# After (simplified single method)
MCP_REGISTRY_SEED_FROM=data/seed.json ./registry
```

### Registry Composability
The composability workflow is now simplified while maintaining all
functionality:

```bash
# Start first registry with seed data
MCP_REGISTRY_SEED_FROM=data/seed.json ./registry

# Start second registry importing from first via pagination
MCP_REGISTRY_SEED_FROM=http://localhost:8080 ./registry
```

## Technical Implementation
- Maintains full backward compatibility for import functionality
- All existing seed data sources continue to work (local files, HTTP
URLs, registry URLs)
- Automatic pagination through `/v0/servers` endpoint remains unchanged
- Configurable delays between requests preserved

## Benefits
- **Reduced complexity**: Single configuration method instead of
multiple
- **Clearer naming**: `SEED_FROM` better describes the source of seed
data
- **Easier maintenance**: Fewer configuration paths to test and document
- **Consistent patterns**: Aligns with other environment-variable-only
configuration

All existing functionality is preserved while providing a cleaner, more
maintainable configuration interface.

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: Avinash Sridhar <sridharavinash@users.noreply.github.com>
Co-authored-by: Toby Padilla <toby@toby.sh>
Co-authored-by: toby <83556+toby@users.noreply.github.com>

internal/api/handlers/v0/mocks_test.go

@@ -0,0 +1,50 @@
+package v0_test
+
+import (
+	"context"
+
+	"github.com/modelcontextprotocol/registry/internal/model"
+	"github.com/stretchr/testify/mock"
+)
+
+// MockRegistryService is a mock implementation of the RegistryService interface
+type MockRegistryService struct {
+	mock.Mock
+}
+
+func (m *MockRegistryService) List(cursor string, limit int) ([]model.Server, string, error) {
+	args := m.Called(cursor, limit)
+	return args.Get(0).([]model.Server), args.String(1), args.Error(2)
+}
+
+func (m *MockRegistryService) GetByID(id string) (*model.ServerDetail, error) {
+	args := m.Called(id)
+	return args.Get(0).(*model.ServerDetail), args.Error(1)
+}
+
+func (m *MockRegistryService) Publish(serverDetail *model.ServerDetail) error {
+	args := m.Called(serverDetail)
+	return args.Error(0)
+}
+
+// MockAuthService is a mock implementation of the auth.Service interface
+type MockAuthService struct {
+	mock.Mock
+}
+
+func (m *MockAuthService) StartAuthFlow(
+	ctx context.Context, method model.AuthMethod, repoRef string,
+) (map[string]string, string, error) {
+	args := m.Called(ctx, method, repoRef)
+	return args.Get(0).(map[string]string), args.String(1), args.Error(2)
+}
+
+func (m *MockAuthService) CheckAuthStatus(ctx context.Context, statusToken string) (string, error) {
+	args := m.Called(ctx, statusToken)
+	return args.String(0), args.Error(1)
+}
+
+func (m *MockAuthService) ValidateAuth(ctx context.Context, authentication model.Authentication) (bool, error) {
+	args := m.Called(ctx, authentication)
+	return args.Bool(0), args.Error(1)
+}

internal/api/handlers/v0/publish_test.go

@@ -17,48 +17,6 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-// MockRegistryService is a mock implementation of the RegistryService interface
-type MockRegistryService struct {
-	mock.Mock
-}
-
-func (m *MockRegistryService) List(cursor string, limit int) ([]model.Server, string, error) {
-	args := m.Called(cursor, limit)
-	return args.Get(0).([]model.Server), args.String(1), args.Error(2)
-}
-
-func (m *MockRegistryService) GetByID(id string) (*model.ServerDetail, error) {
-	args := m.Called(id)
-	return args.Get(0).(*model.ServerDetail), args.Error(1)
-}
-
-func (m *MockRegistryService) Publish(serverDetail *model.ServerDetail) error {
-	args := m.Called(serverDetail)
-	return args.Error(0)
-}
-
-// MockAuthService is a mock implementation of the auth.Service interface
-type MockAuthService struct {
-	mock.Mock
-}
-
-func (m *MockAuthService) StartAuthFlow(
-	ctx context.Context, method model.AuthMethod, repoRef string,
-) (map[string]string, string, error) {
-	args := m.Called(ctx, method, repoRef)
-	return args.Get(0).(map[string]string), args.String(1), args.Error(2)
-}
-
-func (m *MockAuthService) CheckAuthStatus(ctx context.Context, statusToken string) (string, error) {
-	args := m.Called(ctx, statusToken)
-	return args.String(0), args.Error(1)
-}
-
-func (m *MockAuthService) ValidateAuth(ctx context.Context, authentication model.Authentication) (bool, error) {
-	args := m.Called(ctx, authentication)
-	return args.Bool(0), args.Error(1)
-}
-
 func TestPublishHandler(t *testing.T) {
 	testCases := []struct {
 		name             string
@@ -479,7 +437,12 @@ func TestPublishHandlerBearerTokenParsing(t *testing.T) {
 			requestBody, err := json.Marshal(serverDetail)
 			assert.NoError(t, err)
 
-			req, err := http.NewRequestWithContext(context.Background(), http.MethodPost, "/publish", bytes.NewBuffer(requestBody))
+			req, err := http.NewRequestWithContext(
+				context.Background(),
+				http.MethodPost,
+				"/publish",
+				bytes.NewBuffer(requestBody),
+			)
 			assert.NoError(t, err)
 			req.Header.Set("Authorization", tc.authHeader)
 
@@ -544,7 +507,12 @@ func TestPublishHandlerAuthMethodSelection(t *testing.T) {
 			requestBody, err := json.Marshal(serverDetail)
 			assert.NoError(t, err)
 
-			req, err := http.NewRequestWithContext(context.Background(), http.MethodPost, "/publish", bytes.NewBuffer(requestBody))
+			req, err := http.NewRequestWithContext(
+				context.Background(),
+				http.MethodPost,
+				"/publish",
+				bytes.NewBuffer(requestBody),
+			)
 			assert.NoError(t, err)
 			req.Header.Set("Authorization", "Bearer test_token")