Rename test file references: Bookmann → Bookhoard

Test file updates:
- Update import paths in test files: bookmann/internal → bookhoard/internal
- Update test helper functions and references
- Update test comments and documentation

This is part 6 of the project rename to Bookhoard.

cmd/server/tests/device_test.go

@@ -1,7 +1,7 @@
 package main
 
 import (
-	"bookmann/internal/database"
+	"bookhoard/internal/database"
 	"bytes"
 	"context"
 	"encoding/json"

cmd/server/tests/kobo_test.go

@@ -1,7 +1,7 @@
 package main
 
 import (
-	"bookmann/internal/handlers"
+	"bookhoard/internal/handlers"
 	"bytes"
 	"encoding/json"
 	"net/http"

cmd/server/tests/queue_test.go

@@ -1,7 +1,7 @@
 package main
 
 import (
-	"bookmann/internal/database"
+	"bookhoard/internal/database"
 	"bytes"
 	"context"
 	"encoding/json"

cmd/server/tests/security_test.go

@@ -1,7 +1,7 @@
 package main
 
 import (
-	ratelimit "bookmann/internal/middleware"
+	ratelimit "bookhoard/internal/middleware"
 	"net/http"
 	"net/http/httptest"
 	"testing"

cmd/server/tests/test_helpers.go

@@ -1,11 +1,11 @@
 package main
 
 import (
-	"bookmann/internal/config"
-	"bookmann/internal/database"
-	"bookmann/internal/handlers"
-	ratelimit "bookmann/internal/middleware"
-	wsync "bookmann/internal/sync"
+	"bookhoard/internal/config"
+	"bookhoard/internal/database"
+	"bookhoard/internal/handlers"
+	ratelimit "bookhoard/internal/middleware"
+	wsync "bookhoard/internal/sync"
 	"bytes"
 	"context"
 	"encoding/json"
@@ -59,7 +59,7 @@ func setupTestServer(t *testing.T) (*httptest.Server, *database.Queries, *config
 			DatabasePort:      "5432",
 			DatabaseUser:      "postgres",
 			DatabasePassword:  "", // Not used when DATABASE_URL is set
-			DatabaseName:      "bookmann",
+			DatabaseName:      "bookhoard",
 			JWTSecret:         "test-secret-key",
 			UploadPath:        "./test-uploads",
 			TestMode:          true,
@@ -91,7 +91,7 @@ func setupTestServer(t *testing.T) (*httptest.Server, *database.Queries, *config
 			DatabasePort:      "5432",
 			DatabaseUser:      "postgres",
 			DatabasePassword:  dbPass,
-			DatabaseName:      "bookmann",
+			DatabaseName:      "bookhoard",
 			JWTSecret:         "test-secret-key",
 			UploadPath:        "./test-uploads",
 			TestMode:          true,

cmd/server/tests/websocket_test.go

@@ -1,7 +1,7 @@
 package main
 
 import (
-	"bookmann/internal/database"
+	"bookhoard/internal/database"
 	"context"
 	"encoding/json"
 	"fmt"