Keep original Tracker Full neighbor table within its RAM budget

build_legacy.sh

@@ -3061,6 +3061,7 @@ requires_dram_limited_neighbors() {
   # 8 KiB static reserve at 254 neighbors. Use their board-declared 50-entry
   # tables when the OTA manager is included.
   case "${1,,}" in
+    heltec_wireless_tracker_repeater_observer_mqtt|\
     heltec_tracker_v1_1_repeater_observer_mqtt|\
     heltec_tracker_v2_repeater_observer_mqtt)
       # The non-PSRAM Tracker's color framebuffer, MQTT/TLS and OTA leave

docs/optional_screens.md

@@ -34,6 +34,10 @@ recipe has no verified panel readback connection. Detection is not enabled for
 that wiring. A touchscreen acknowledgement alone does not establish that the
 LCD responds. The V4 R8 TFT and older V4 TFT pin mappings are distinct.
 
+Full Wireless Tracker repeaters retain the board's 50-neighbor capacity, as
+the V1.1 and V2 Full profiles already do. This preserves RAM for the screen,
+GPS, MQTT and update services; the RAM admission limits remain unchanged.
+
 The R8 readback route is documented in Heltec's
 [Expansion Kit V2.03 schematic](https://resource.heltec.cn/download/WiFi_LoRa_32_Expansion_Kit-V2/schematic/Expansion_board_V2.03.pdf).
 Tracker V1 wiring is documented in the
@@ -75,7 +79,7 @@ the picker can advertise detection.
 | Check | Result |
 | --- | --- |
 | Native detection, rendering, power and headless regressions | PASS, 31 test methods, including 12 new detection methods with sanitizers and negative controls |
-| Recipe, release-proof, controls and offline-picker regressions | PASS, 41 test methods |
+| Recipe, release-proof, controls and offline-picker regressions | PASS, 42 test methods |
 | Resolved PlatformIO configuration | PASS, 31 optional-screen environments across the three hardware families; integral-screen recipes excluded |
 | Picker JavaScript regressions | PASS, 4 suites |
 | Complete build-profile selection suite | PASS |

test/test_optional_display_profiles.py

@@ -26,6 +26,26 @@ def manifest(spec, target):
 
 
 class OptionalDisplayProfilesTest(unittest.TestCase):
+    def test_all_tracker_full_repeaters_keep_the_measured_safe_neighbor_capacity(self):
+        script = r'''
+set -euo pipefail
+source "$1/build_legacy.sh"
+ESP32_FULL_BUILD=1
+for target in Heltec_Wireless_Tracker_repeater_observer_mqtt heltec_tracker_v1_1_repeater_observer_mqtt heltec_tracker_v2_repeater_observer_mqtt; do
+  PLATFORMIO_BUILD_FLAGS=""
+  PLATFORMIO_BUILD_UNFLAGS=""
+  BUILD_REDUCTIONS=()
+  apply_repeater_neighbor_capacity "$target"
+  [[ "$PLATFORMIO_BUILD_FLAGS" == *"-DMAX_NEIGHBOURS=50"* ]]
+  [[ " ${BUILD_REDUCTIONS[*]} " == *"mesh.neighbors limited to 50"* ]]
+done
+ESP32_FULL_BUILD=0
+! requires_dram_limited_neighbors Heltec_Wireless_Tracker_repeater_observer_mqtt
+'''
+        result = subprocess.run(["bash", "-c", script, "optional-screen-capacity", str(ROOT)],
+                                cwd=ROOT, capture_output=True, text=True, check=False)
+        self.assertEqual(result.returncode, 0, result.stdout + result.stderr)
+
     def test_optional_hardware_defaults_and_integral_screens_are_separate(self):
         recipes = Recipes()
         for spec, target in zip(displays.SPECS, TARGETS):