enhance bug report handling with pagination, filtering, and improved response structure

internal/models/bug_report.go

@@ -14,6 +14,11 @@ const (
 	BugReportStatusClosed   BugReportStatus = "closed"
 )
 
+type BugReportListItem struct {
+	BugReport
+	FileCount int `db:"file_count" json:"file_count"`
+}
+
 type BugReport struct {
 	ID          uint64          `db:"id"           json:"id"`
 	Name        string          `db:"name"         json:"name"`

internal/models/session.go

@@ -4,8 +4,6 @@ import "time"
 
 type Session struct {
 	ID        string    `db:"id"         json:"id"`
-	UserID    int64     `db:"user_id"    json:"user_id"`
-	Token     string    `db:"token"      json:"token"`
+	UserID    string    `db:"user_id"    json:"user_id"`
 	ExpiresAt time.Time `db:"expires_at" json:"expires_at"`
-	CreatedAt time.Time `db:"created_at" json:"created_at"`
 }

internal/models/user.go

@@ -10,12 +10,11 @@ const (
 )
 
 type User struct {
-	ID           int64     `db:"id"            json:"id"`
+	ID           string    `db:"id"            json:"id"`
 	Username     string    `db:"username"      json:"username"`
-	Email        string    `db:"email"         json:"email"`
+	Displayname  string    `db:"displayname"   json:"displayname"`
 	PasswordHash string    `db:"password_hash" json:"-"`
 	Role         UserRole  `db:"role"          json:"role"`
 	Enabled      bool      `db:"enabled"       json:"enabled"`
 	CreatedAt    time.Time `db:"created_at"    json:"created_at"`
-	UpdatedAt    time.Time `db:"updated_at"    json:"updated_at"`
 }