Use real noise floor for signal rating; unify with SNR color

Meshtastic.xcodeproj/project.pbxproj

@@ -260,6 +260,7 @@
 		C54AC9F4DA920A4F718CE21A /* DiscoveryScanEngineTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = AAD14FA280F0A130730DEB93 /* DiscoveryScanEngineTests.swift */; };
 		DDBEAC0010000000000000D1 /* DiscoveredBeaconEntityTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = DDBEAC0010000000000000C1 /* DiscoveredBeaconEntityTests.swift */; };
 		DDBEAC001000000000000131 /* ModemPresetFrequencySlotTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = DDBEAC001000000000000121 /* ModemPresetFrequencySlotTests.swift */; };
+		DDBEAC001000000000000133 /* LoRaSignalStrengthRatingTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = DDBEAC001000000000000123 /* LoRaSignalStrengthRatingTests.swift */; };
 		DDBEAC001000000000000151 /* BeaconAddVsSwitchTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = DDBEAC001000000000000141 /* BeaconAddVsSwitchTests.swift */; };
 		C79BFC99EDCC89DD45082753 /* DiscoveryScanView.swift in Sources */ = {isa = PBXBuildFile; fileRef = F5CA8BAC814CF82E127EEABF /* DiscoveryScanView.swift */; };
 		D02589957BD040969FCB8663 /* PositionEntity.swift in Sources */ = {isa = PBXBuildFile; fileRef = A97241903A924144A3EEB679 /* PositionEntity.swift */; };
@@ -827,6 +828,7 @@
 		AAD14FA280F0A130730DEB93 /* DiscoveryScanEngineTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DiscoveryScanEngineTests.swift; sourceTree = "<group>"; };
 		DDBEAC0010000000000000C1 /* DiscoveredBeaconEntityTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DiscoveredBeaconEntityTests.swift; sourceTree = "<group>"; };
 		DDBEAC001000000000000121 /* ModemPresetFrequencySlotTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ModemPresetFrequencySlotTests.swift; sourceTree = "<group>"; };
+		DDBEAC001000000000000123 /* LoRaSignalStrengthRatingTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LoRaSignalStrengthRatingTests.swift; sourceTree = "<group>"; };
 		DDBEAC001000000000000141 /* BeaconAddVsSwitchTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BeaconAddVsSwitchTests.swift; sourceTree = "<group>"; };
 		AAFF00000000000000000001 /* OfflineMapRegion.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = OfflineMapRegion.swift; path = Meshtastic/Helpers/Map/OfflineMapRegion.swift; sourceTree = SOURCE_ROOT; };
 		AAFF00000000000000000002 /* OfflineMapManager.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = OfflineMapManager.swift; path = Meshtastic/Helpers/Map/OfflineMapManager.swift; sourceTree = SOURCE_ROOT; };
@@ -1642,6 +1644,7 @@
 				AAD14FA280F0A130730DEB93 /* DiscoveryScanEngineTests.swift */,
 				DDBEAC0010000000000000C1 /* DiscoveredBeaconEntityTests.swift */,
 				DDBEAC001000000000000121 /* ModemPresetFrequencySlotTests.swift */,
+				DDBEAC001000000000000123 /* LoRaSignalStrengthRatingTests.swift */,
 				DDBEAC001000000000000141 /* BeaconAddVsSwitchTests.swift */,
 				DDBEAC001000000000000201 /* MeshBeaconConfigEditorTests.swift */,
 				18295AFE686247778632C6DE /* NetworkConfigIPConversionTests.swift */,
@@ -2769,6 +2772,7 @@
 				C54AC9F4DA920A4F718CE21A /* DiscoveryScanEngineTests.swift in Sources */,
 				DDBEAC0010000000000000D1 /* DiscoveredBeaconEntityTests.swift in Sources */,
 				DDBEAC001000000000000131 /* ModemPresetFrequencySlotTests.swift in Sources */,
+				DDBEAC001000000000000133 /* LoRaSignalStrengthRatingTests.swift in Sources */,
 				DDBEAC001000000000000151 /* BeaconAddVsSwitchTests.swift in Sources */,
 				DDBEAC001000000000000211 /* MeshBeaconConfigEditorTests.swift in Sources */,
 				FDAF8808342245C4817C93EC /* NetworkConfigIPConversionTests.swift in Sources */,

Meshtastic/Extensions/SwiftData/NodeInfoEntityExtension.swift

@@ -203,6 +203,21 @@ extension NodeInfoEntity {
 		return try? ctx.fetch(descriptor).first
 	}
 
+	/// The receiving radio's most recent noise floor (dBm) from Local Stats telemetry
+	/// (`DeviceMetrics.noise_floor`), or nil when it's absent, zero, or older than the
+	/// online threshold (2 h). Used to compute a real link margin (`rssi - noiseFloor`)
+	/// for signal-quality rating instead of guessed fixed RSSI thresholds.
+	var recentNoiseFloor: Int32? {
+		guard let stats = latestLocalStats,
+			  let time = stats.time,
+			  let noiseFloor = stats.noiseFloor,
+			  noiseFloor != 0,
+			  let twoHoursAgo = Calendar.current.date(byAdding: .minute, value: -120, to: Date()),
+			  time.compare(twoHoursAgo) == .orderedDescending
+		else { return nil }
+		return noiseFloor
+	}
+
 	var hasLocalStats: Bool {
 		guard let ctx = modelContext else { return false }
 		let nodeNum = self.num

Meshtastic/Resources/docs/index.json

@@ -44,7 +44,6 @@
         "section": "user",
         "navOrder": 14,
         "keywords": [
-            "quot",
             "messages",
             "carplay",
             "siri",
@@ -73,7 +72,8 @@
             "heard",
             "device",
             "contact",
-            "channels"
+            "channels",
+            "automatically"
         ],
         "charCount": 3378
     },
@@ -185,12 +185,12 @@
             "location",
             "ios",
             "first",
-            "amp",
             "within",
             "tip",
             "time",
             "tapping",
-            "started"
+            "started",
+            "setup"
         ],
         "charCount": 2899
     },
@@ -372,22 +372,22 @@
             "hardware",
             "broadcasts",
             "row",
+            "radio",
             "public",
             "location",
             "firmware",
             "direct",
+            "detail",
             "client",
             "supported",
             "mesh",
             "long",
             "local",
             "links",
             "hops",
-            "heard",
-            "filter",
-            "display"
+            "heard"
         ],
-        "charCount": 8333
+        "charCount": 8630
     },
     {
         "id": "settings",
@@ -434,38 +434,38 @@
         "section": "user",
         "navOrder": 12,
         "keywords": [
-            "signal",
-            "quot",
             "snr",
-            "rssi",
+            "signal",
             "noise",
             "meter",
+            "rssi",
+            "radio",
+            "limit",
             "meshtastic",
-            "than",
+            "floor",
             "static",
-            "radio",
             "background",
-            "dbm",
-            "bars",
-            "bad",
-            "understand",
+            "than",
             "preset",
-            "loud",
-            "lora",
+            "bars",
             "using",
             "uses",
-            "them",
-            "specific",
+            "understand",
+            "still",
+            "lora",
+            "local",
+            "clarity",
+            "below",
+            "bad",
+            "app",
+            "above",
+            "two",
             "see",
-            "out",
-            "message",
-            "means",
-            "limit",
-            "like",
-            "good",
-            "friend"
+            "relative",
+            "rating",
+            "power"
         ],
-        "charCount": 3992
+        "charCount": 4810
     },
     {
         "id": "tak",
@@ -499,10 +499,10 @@
             "zip",
             "tip",
             "read",
-            "quot",
             "primary",
             "position",
-            "pickers"
+            "pickers",
+            "over"
         ],
         "charCount": 6073
     },
@@ -561,7 +561,6 @@
             "localizer",
             "local",
             "translate",
-            "amp",
             "translation",
             "review",
             "open",
@@ -580,7 +579,8 @@
             "english",
             "directly",
             "bin",
-            "automatically"
+            "automatically",
+            "version"
         ],
         "charCount": 4753
     },
@@ -602,7 +602,6 @@
             "distances",
             "distance",
             "date",
-            "amp",
             "telemetry",
             "meshtastic",
             "device",
@@ -619,7 +618,8 @@
             "change",
             "altitude",
             "uses",
-            "time"
+            "time",
+            "settings"
         ],
         "charCount": 4753
     },
@@ -688,16 +688,16 @@
             "app",
             "signed",
             "radios",
-            "quot",
             "per",
             "only",
             "message",
             "docs",
-            "amp",
             "waypoints",
             "watch",
             "verified",
-            "translation"
+            "translation",
+            "translate",
+            "snr"
         ],
         "charCount": 6314
     },
@@ -707,7 +707,6 @@
         "section": "developer",
         "navOrder": 3,
         "keywords": [
-            "quot",
             "settings",
             "view",
             "settingsnavigationstate",
@@ -736,7 +735,8 @@
             "create",
             "adding",
             "url",
-            "tests"
+            "tests",
+            "testing"
         ],
         "charCount": 2664
     },
@@ -830,7 +830,6 @@
             "accessorymanager",
             "logger",
             "root",
-            "quot",
             "packet",
             "extensions",
             "ble",
@@ -853,7 +852,8 @@
             "transport",
             "tips",
             "tcp",
-            "swiftdata"
+            "swiftdata",
+            "subsystems"
         ],
         "charCount": 3538
     },
@@ -915,7 +915,6 @@
             "nodes",
             "nodenum",
             "deep",
-            "amp",
             "tak",
             "lora",
             "links",
@@ -931,7 +930,8 @@
             "swift",
             "serial",
             "security",
-            "routes"
+            "routes",
+            "route"
         ],
         "charCount": 3040
     },
@@ -980,7 +980,6 @@
         "section": "developer",
         "navOrder": 7,
         "keywords": [
-            "quot",
             "locale",
             "unit",
             "measurement",
@@ -1004,12 +1003,13 @@
             "format",
             "device",
             "date",
-            "amp",
             "universal",
             "unitspeed",
             "unitlength",
             "text",
-            "string"
+            "string",
+            "nodes",
+            "measurementformatter"
         ],
         "charCount": 6352
     },
@@ -1065,7 +1065,6 @@
             "swift",
             "xml",
             "route",
-            "quot",
             "atak",
             "wire",
             "try",
@@ -1087,7 +1086,8 @@
             "zstd",
             "via",
             "supportstakv2",
-            "routes"
+            "routes",
+            "protobuf"
         ],
         "charCount": 7653
     },
@@ -1098,7 +1098,6 @@
         "navOrder": 6,
         "keywords": [
             "test",
-            "quot",
             "tests",
             "snapshots",
             "run",
@@ -1126,7 +1125,8 @@
             "using",
             "try",
             "suite",
-            "screenshots"
+            "screenshots",
+            "scale"
         ],
         "charCount": 3697
     },

Meshtastic/Resources/docs/markdown/user/nodes.md

@@ -49,6 +49,8 @@ Each node is configured with a role that determines how it behaves on the mesh.
 
 The full node row shows the circle avatar, battery level, encryption status, last-heard time, device role, signal strength, and log indicators all at once.
 
+The signal meter shown here (and on a node's detail screen) rates link quality from SNR relative to your radio preset — using your radio's reported noise floor when it's available — and the strength bar and the SNR text color always reflect the same rating. See [Signal Meter](signal-meter.md) for how it works.
+
 <picture>
   <source media="(prefers-color-scheme: dark)" srcset="../assets/screenshots/standard_directConnected_dark.png" />
   <img src="../assets/screenshots/standard_directConnected.png" alt="Directly connected node, favorite, with signal meter" />