diff --git a/apps/api-server/internal/models/platform.go b/apps/api-server/internal/models/platform.go
new file mode 100644
index 0000000..fe9b290
--- /dev/null
+++ b/apps/api-server/internal/models/platform.go
@@ -0,0 +1,111 @@
+package models
+
+import (
+	"time"
+
+	"gorm.io/gorm"
+)
+
+// Plugin represents a real, persisted plugin record.
+type Plugin struct {
+	ID          uint           `json:"id" gorm:"primaryKey"`
+	Name        string         `json:"name" gorm:"uniqueIndex;not null"`
+	Version     string         `json:"version" gorm:"not null"`
+	Description string         `json:"description"`
+	Author      string         `json:"author"`
+	Type        string         `json:"type"`
+	Category    string         `json:"category"`
+	License     string         `json:"license"`
+	Homepage    string         `json:"homepage"`
+	Repository  string         `json:"repository"`
+	Enabled     bool           `json:"enabled" gorm:"default:false"`
+	Status      string         `json:"status" gorm:"default:'installed'"`
+	Config      string         `json:"config,omitempty" gorm:"type:jsonb"`
+	InstalledAt time.Time      `json:"installed_at"`
+	CreatedAt   time.Time      `json:"created_at"`
+	UpdatedAt   time.Time      `json:"updated_at"`
+	DeletedAt   gorm.DeletedAt `json:"-" gorm:"index"`
+}
+
+// Automation represents a workflow automation definition.
+type Automation struct {
+	ID                  uint           `json:"id" gorm:"primaryKey"`
+	Name                string         `json:"name" gorm:"uniqueIndex;not null"`
+	Description         string         `json:"description"`
+	Type                string         `json:"type"`
+	Enabled             bool           `json:"enabled" gorm:"default:true"`
+	ScheduleType        string         `json:"schedule_type"` // cron|interval|manual
+	ScheduleCron        string         `json:"schedule_cron,omitempty"`
+	ScheduleIntervalSec int            `json:"schedule_interval_sec,omitempty"`
+	Timezone            string         `json:"timezone" gorm:"default:'UTC'"`
+	Definition          string         `json:"definition" gorm:"type:jsonb"` // actions/conditions payload
+	LastRunAt           *time.Time     `json:"last_run_at,omitempty"`
+	NextRunAt           *time.Time     `json:"next_run_at,omitempty"`
+	CreatedAt           time.Time      `json:"created_at"`
+	UpdatedAt           time.Time      `json:"updated_at"`
+	DeletedAt           gorm.DeletedAt `json:"-" gorm:"index"`
+}
+
+// AutomationRun represents an execution of an automation.
+type AutomationRun struct {
+	ID           uint       `json:"id" gorm:"primaryKey"`
+	AutomationID uint       `json:"automation_id" gorm:"index;not null"`
+	Status       string     `json:"status"` // pending|running|success|failed
+	StartedAt    time.Time  `json:"started_at"`
+	EndedAt      *time.Time `json:"ended_at,omitempty"`
+	DurationMS   int64      `json:"duration_ms"`
+	Output       string     `json:"output"`
+	Error        string     `json:"error,omitempty"`
+	Details      string     `json:"details,omitempty" gorm:"type:jsonb"`
+	CreatedAt    time.Time  `json:"created_at"`
+}
+
+// ConfigEntry represents a persisted runtime-tunable config value.
+type ConfigEntry struct {
+	ID          uint      `json:"id" gorm:"primaryKey"`
+	Section     string    `json:"section" gorm:"index:idx_section_key,unique;not null"`
+	Key         string    `json:"key" gorm:"index:idx_section_key,unique;not null"`
+	Value       string    `json:"value"`
+	Type        string    `json:"type"` // string|integer|boolean|duration|json
+	Sensitive   bool      `json:"sensitive" gorm:"default:false"`
+	Description string    `json:"description"`
+	UpdatedBy   string    `json:"updated_by"`
+	CreatedAt   time.Time `json:"created_at"`
+	UpdatedAt   time.Time `json:"updated_at"`
+}
+
+// DeploymentRecord is a persisted deployment history entry.
+type DeploymentRecord struct {
+	ID          uint       `json:"id" gorm:"primaryKey"`
+	Service     string     `json:"service" gorm:"index;not null"`
+	Version     string     `json:"version" gorm:"not null"`
+	Environment string     `json:"environment" gorm:"index"`
+	Status      string     `json:"status"` // pending|in_progress|completed|failed|rolled_back
+	Strategy    string     `json:"strategy"`
+	Replicas    int        `json:"replicas"`
+	TriggeredBy string     `json:"triggered_by"`
+	Reason      string     `json:"reason"`
+	StartedAt   *time.Time `json:"started_at,omitempty"`
+	CompletedAt *time.Time `json:"completed_at,omitempty"`
+	RollbackTo  string     `json:"rollback_to,omitempty"`
+	CreatedAt   time.Time  `json:"created_at"`
+	UpdatedAt   time.Time  `json:"updated_at"`
+}
+
+// ChaosExperimentRecord persists chaos experiment history.
+type ChaosExperimentRecord struct {
+	ID          uint       `json:"id" gorm:"primaryKey"`
+	ExternalID  string     `json:"external_id" gorm:"uniqueIndex"`
+	Name        string     `json:"name"`
+	Type        string     `json:"type"`
+	Target      string     `json:"target"`
+	Status      string     `json:"status"`
+	DurationMS  int64      `json:"duration_ms"`
+	Probability float64    `json:"probability"`
+	Amount      int        `json:"amount"`
+	StartedAt   time.Time  `json:"started_at"`
+	FinishedAt  *time.Time `json:"finished_at,omitempty"`
+	Error       string     `json:"error,omitempty"`
+	CreatedAt   time.Time  `json:"created_at"`
+	UpdatedAt   time.Time  `json:"updated_at"`
+}