[client] UI refactor (#6069)

Refactor UI

---------

Co-authored-by: Eduard Gert <kontakt@eduardgert.de>
Co-authored-by: braginini <bangvalo@gmail.com>
Co-authored-by: Pascal Fischer <32096965+pascal-fischer@users.noreply.github.com>
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: riccardom <riccardomanfrin@gmail.com>

client/proto/metadata.go

@@ -0,0 +1,61 @@
+package proto
+
+// SystemEvent metadata markers. The daemon stamps these on internal control
+// events it publishes over SubscribeEvents (profile-list refresh, log-level
+// change); the desktop UI recognises them and acts on them instead of
+// surfacing them as user-facing notifications.
+//
+// These live in the proto package — the shared contract both the daemon
+// (client/server) and the UI (client/ui/services) already import — so producer
+// and consumer reference the same constant rather than duplicating literals.
+// This file is hand-written and not touched by protoc.
+const (
+	// MetadataKindKey is the SystemEvent.metadata key carrying the event-kind
+	// marker (one of the MetadataKind* values below).
+	MetadataKindKey = "kind"
+
+	// MetadataKindProfileListChanged marks a CLI-driven profile add/remove that
+	// should nudge the UI's profile views to refresh.
+	MetadataKindProfileListChanged = "profile-list-changed"
+	// MetadataKindLogLevelChanged marks a daemon log-level change (or the
+	// per-subscription snapshot) that drives the GUI's file logging on/off.
+	MetadataKindLogLevelChanged = "log-level-changed"
+
+	// MetadataProfileKey carries the profile name for
+	// MetadataKindProfileListChanged.
+	MetadataProfileKey = "profile"
+	// MetadataLevelKey carries the lowercase logrus level name for
+	// MetadataKindLogLevelChanged.
+	MetadataLevelKey = "level"
+)
+
+// SystemEvent metadata markers for daemon config-change events. The daemon
+// publishes a SYSTEM-category event whenever its effective Config is
+// replaced (engine spawn, Up RPC, MDM policy diff); the UI re-fetches its
+// cached config/features in response and, for the MDM source, shows a
+// localised toast. Producer (client/server) and consumer (client/ui) share
+// these so neither duplicates the wire literals.
+const (
+	// MetadataTypeKey is the SystemEvent.metadata key carrying the
+	// config-change event type (one of the MetadataType* values below).
+	MetadataTypeKey = "type"
+	// MetadataTypeConfigChanged marks a config replacement that should nudge
+	// UIs to re-fetch their cached config + features. UserMessage is empty so
+	// the change is silent; the source is carried in MetadataSourceKey.
+	MetadataTypeConfigChanged = "config_changed"
+	// MetadataTypePolicyApplied marks an MDM-policy-driven config change. The
+	// daemon stamps it with a (non-localised) UserMessage; the UI suppresses
+	// that and builds its own localised toast off the paired config_changed
+	// event instead.
+	MetadataTypePolicyApplied = "policy_applied"
+
+	// MetadataSourceKey is the SystemEvent.metadata key carrying what
+	// triggered a config_changed event (one of the MetadataSource* values).
+	MetadataSourceKey = "source"
+	// MetadataSourceStartup marks a config_changed from the daemon Start path.
+	MetadataSourceStartup = "startup"
+	// MetadataSourceUpRPC marks a config_changed from the Up RPC.
+	MetadataSourceUpRPC = "up_rpc"
+	// MetadataSourceMDM marks a config_changed driven by an MDM policy diff.
+	MetadataSourceMDM = "mdm"
+)