docs: purge remaining S3R references from historical docs and handleiding

docs/superpowers/plans/2025-07-28-esp32-pico-d4-port.md

@@ -167,7 +167,7 @@ adb -s <device_ip>:5555 shell am start -n com.eddy.atomrelay/.MainActivity
 **Files:** N/A (manual verification)
 
 - [ ] **Step 1: Ensure phone and ESP32 are powered and within range**
-- [ ] **Step 2: Open app → auto-scan should find "AtomS3R-Relay"**
+- [ ] **Step 2: Open app → auto-scan should find "SylDa_Server"**
 - [ ] **Step 3: Verify status shows "Connected"**
 - [ ] **Step 4: Hold HOLD button → relay should activate (verify with multimeter or relay click)**
 - [ ] **Step 5: Release → relay deactivates**

docs/superpowers/plans/2026-07-28-esp32-pico-d4-port.md

@@ -147,7 +147,7 @@ With:
 
 Replace (line 151):
 ```cpp
-    BLEDevice::init("AtomS3R-Relay");
+    BLEDevice::init("SylDa_Server");
 ```
 
 With:
@@ -157,7 +157,7 @@ With:
 
 Replace (line 174):
 ```cpp
-    Serial.println("BLE: advertising started as 'AtomS3R-Relay'");
+    Serial.println("BLE: advertising started as 'SylDa_Server'");
 ```
 
 With: