projection: begin the exact-path public epoch

The public tree and its history contain only the listed paths. Earlier projection history remains preserved internally.

Source-Sha: 913fde029b935671833254797f0f20f1eb9fabba

Policy-Sha: 913fde029b935671833254797f0f20f1eb9fabba

Tree-Digest: 180ae530c1058a2a5c89837bdce2d323ae83e669e38590ca72e75b8d92b7262f

agent/internal/models/storage_metrics.go

@@ -0,0 +1,31 @@
+package models
+
+import (
+	"time"
+
+	"github.com/gofrs/uuid/v5"
+)
+
+// StorageMetricReport represents storage metrics from an agent
+type StorageMetricReport struct {
+	AgentID   uuid.UUID          `json:"agent_id"`
+	CommandID string             `json:"command_id"`
+	Timestamp time.Time          `json:"timestamp"`
+	Metrics   []StorageMetric    `json:"metrics"`
+}
+
+// StorageMetric represents a single disk/storage metric
+type StorageMetric struct {
+	Mountpoint     string                 `json:"mountpoint"`
+	Device         string                 `json:"device"`
+	DiskType       string                 `json:"disk_type"`
+	Filesystem     string                 `json:"filesystem"`
+	TotalBytes     int64                  `json:"total_bytes"`
+	UsedBytes      int64                  `json:"used_bytes"`
+	AvailableBytes int64                  `json:"available_bytes"`
+	UsedPercent    float64                `json:"used_percent"`
+	IsRoot         bool                   `json:"is_root"`
+	IsLargest      bool                   `json:"is_largest"`
+	Severity       string                 `json:"severity"`
+	Metadata       map[string]interface{} `json:"metadata,omitempty"`
+}

agent/internal/models/system_event.go

@@ -0,0 +1,85 @@
+package models
+
+import (
+	"time"
+
+	"github.com/gofrs/uuid/v5"
+)
+
+// SystemEvent represents a unified event log entry for all system events
+// This is a copy of the server model to avoid circular dependencies
+type SystemEvent struct {
+	ID           uuid.UUID              `json:"id" db:"id"`
+	AgentID      *uuid.UUID             `json:"agent_id,omitempty" db:"agent_id"` // Pointer to allow NULL for server events
+	EventType    string                 `json:"event_type" db:"event_type"`       // e.g., 'agent_update', 'agent_startup', 'server_build'
+	EventSubtype string                 `json:"event_subtype" db:"event_subtype"` // e.g., 'success', 'failed', 'info', 'warning'
+	Severity     string                 `json:"severity" db:"severity"`           // 'info', 'warning', 'error', 'critical'
+	Component    string                 `json:"component" db:"component"`         // 'agent', 'server', 'build', 'download', 'config', etc.
+	Message      string                 `json:"message" db:"message"`
+	Metadata     map[string]interface{} `json:"metadata,omitempty" db:"metadata"` // JSONB for structured data
+	CreatedAt    time.Time              `json:"created_at" db:"created_at"`
+}
+
+// Event type constants
+const (
+	EventTypeAgentStartup      = "agent_startup"
+	EventTypeAgentRegistration = "agent_registration"
+	EventTypeAgentCheckIn      = "agent_checkin"
+	EventTypeAgentScan         = "agent_scan"
+	EventTypeAgentUpdate       = "agent_update"
+	EventTypeAgentInstall      = "agent_install"
+	EventTypeAgentConfig       = "agent_config"
+	EventTypeAgentMigration    = "agent_migration"
+	EventTypeAgentShutdown     = "agent_shutdown"
+	EventTypeServerBuild       = "server_build"
+	EventTypeServerDownload    = "server_download"
+	EventTypeServerConfig      = "server_config"
+	EventTypeServerAuth        = "server_auth"
+	EventTypeDownload          = "download"
+	EventTypeMigration         = "migration"
+	EventTypeError             = "error"
+	EventTypeAgentCrypto       = "agent_crypto"
+	EventTypeAgentDocker       = "agent_docker"
+)
+
+// Event subtype constants
+const (
+	SubtypeSuccess            = "success"
+	SubtypeFailed             = "failed"
+	SubtypeInfo               = "info"
+	SubtypeWarning            = "warning"
+	SubtypeCritical           = "critical"
+	SubtypeDownloadFailed     = "download_failed"
+	SubtypeValidationFailed   = "validation_failed"
+	SubtypeConfigCorrupted    = "config_corrupted"
+	SubtypeMigrationNeeded    = "migration_needed"
+	SubtypePanicRecovered     = "panic_recovered"
+	SubtypeTokenExpired       = "token_expired"
+	SubtypeNetworkTimeout     = "network_timeout"
+	SubtypePermissionDenied   = "permission_denied"
+	SubtypeServiceUnavailable = "service_unavailable"
+	SubtypeDegraded           = "degraded"
+	SubtypeRollback           = "rollback"
+	SubtypeStarted            = "started"
+)
+
+// Severity constants
+const (
+	SeverityInfo     = "info"
+	SeverityWarning  = "warning"
+	SeverityError    = "error"
+	SeverityCritical = "critical"
+)
+
+// Component constants
+const (
+	ComponentAgent     = "agent"
+	ComponentServer    = "server"
+	ComponentBuild     = "build"
+	ComponentDownload  = "download"
+	ComponentConfig    = "config"
+	ComponentDatabase  = "database"
+	ComponentNetwork   = "network"
+	ComponentSecurity  = "security"
+	ComponentMigration = "migration"
+)