Remove AI config approval flow

platform/model/README.md

@@ -14,7 +14,7 @@ Required model groups:
 - log streams and ingestion cursors.
 - operational events.
 - server-bound plugin lifecycle installations and linked jobs.
-- reviewable AI config diffs and approval fences.
+- AI config execution metadata is carried by durable jobs; retired recommendation records are no longer part of the active model or snapshot schema.
 
 Every implemented database model must include field comments, JSON/database tags, and an explicit table name function or equivalent mapping in the chosen stack.
 # Durable Client Manager persistence

platform/model/resources.go

@@ -455,33 +455,6 @@ type PluginLifecycleInstallation struct {
 
 func (PluginLifecycleInstallation) TableName() string { return "plugin_lifecycle_installations" }
 
-type AIConfigDiff struct {
-	ID                     string                   `json:"id" db:"id"`
-	RequestID              string                   `json:"requestId" db:"request_id"`
-	CreatedBy              string                   `json:"createdBy" db:"created_by"`
-	ServerInstanceID       string                   `json:"serverInstanceId" db:"server_instance_id"`
-	PluginID               string                   `json:"pluginId,omitempty" db:"plugin_id"`
-	ProviderID             string                   `json:"providerId,omitempty" db:"provider_id"`
-	Model                  string                   `json:"model,omitempty" db:"model"`
-	Key                    string                   `json:"key" db:"key"`
-	ConfigVersion          int                      `json:"configVersion" db:"config_version"`
-	CurrentConfigChecksum  string                   `json:"currentConfigChecksum" db:"current_config_checksum"`
-	ProposedConfig         string                   `json:"proposedConfig" db:"proposed_config"`
-	DiffSummary            string                   `json:"diffSummary" db:"diff_summary"`
-	State                  domain.AIConfigDiffState `json:"state" db:"state"`
-	ExpiresAt              time.Time                `json:"expiresAt" db:"expires_at"`
-	ApprovedBy             string                   `json:"approvedBy,omitempty" db:"approved_by"`
-	ApprovedAt             time.Time                `json:"approvedAt,omitempty" db:"approved_at"`
-	ApprovalIdempotencyKey string                   `json:"approvalIdempotencyKey,omitempty" db:"approval_idempotency_key"`
-	CancelledBy            string                   `json:"cancelledBy,omitempty" db:"cancelled_by"`
-	CancelledAt            time.Time                `json:"cancelledAt,omitempty" db:"cancelled_at"`
-	JobID                  string                   `json:"jobId,omitempty" db:"job_id"`
-	CreatedAt              time.Time                `json:"createdAt" db:"created_at"`
-	UpdatedAt              time.Time                `json:"updatedAt" db:"updated_at"`
-}
-
-func (AIConfigDiff) TableName() string { return "ai_config_diffs" }
-
 func UserFromDomain(user domain.User) User {
 	user = domain.CopyUser(user)
 	return User{

platform/model/resources_test.go

@@ -18,7 +18,6 @@ func TestTableNames(t *testing.T) {
 		Artifact{}.TableName():                    "artifacts",
 		LogStream{}.TableName():                   "log_streams",
 		PluginLifecycleInstallation{}.TableName(): "plugin_lifecycle_installations",
-		AIConfigDiff{}.TableName():                "ai_config_diffs",
 		SCUMUser{}.TableName():                    "scum_user",
 		SCUMUserTrajectory{}.TableName():          "scum_user_trajectory",
 		SCUMVehicle{}.TableName():                 "scum_vehicle",