feat: surface /api/status memory+disk pressure on connect/status screens (#903) (#908)

Co-authored-by: M57 <hy4ri@users.noreply.github.com>

app/src/main/java/com/m57/hermescontrol/data/model/StatusResponse.kt

@@ -8,6 +8,8 @@ data class StatusResponse(
     val active_sessions: Int? = null,
     val auth_required: Boolean? = null,
     val gateway_platforms: Map<String, PlatformStatus?>? = null,
+    val memory: MemoryPressureStatus? = null,
+    val disk: DiskPressureStatus? = null,
 )
 
 @Serializable
@@ -15,3 +17,35 @@ data class PlatformStatus(
     val state: String? = null,
     val error_code: String? = null,
 )
+
+/**
+ * Host memory-pressure rollup from `GET /api/status` (backend NS-656).
+ * Advisory only — deliberately NOT folded into the endpoint's `overall`
+ * verdict. `pressure` is `ok` | `elevated` | `critical` | `unknown`;
+ * `unknown` means the sample could not be read (or is stale), NOT "fine".
+ */
+@Serializable
+data class MemoryPressureStatus(
+    val pressure: String? = null,
+    val gateway_rss_mb: Int? = null,
+    val system_total_mb: Int? = null,
+    val system_available_mb: Int? = null,
+    val swap_used_mb: Int? = null,
+    val sampled_at: String? = null,
+    val last_boot_unclean: Boolean? = null,
+    val last_boot_suspected_oom: Boolean? = null,
+    val boot_id: String? = null,
+)
+
+/**
+ * Host disk-usage rollup from `GET /api/status` (backend NS-656).
+ * Same advisory semantics as [MemoryPressureStatus]: coarse MB numbers
+ * plus a `pressure` enum, never a liveness verdict.
+ */
+@Serializable
+data class DiskPressureStatus(
+    val pressure: String? = null,
+    val total_mb: Int? = null,
+    val free_mb: Int? = null,
+    val used_percent: Double? = null,
+)