Revert "fix(takserver): emit *:-1:stcp contact endpoint so directed TAK-Talk/GeoChat routes over the mesh; SDK v0.5.1"

This commit landed on main outside the PR process and pins takpacket-sdk 0.5.1, which is not yet published to Maven Central — breaking the build. Reverting to restore a green main; the fix is being re-submitted as a pull request that will merge once 0.5.1 is available on Central.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

core/takserver/src/commonMain/kotlin/org/meshtastic/core/takserver/TAKDefaults.kt

@@ -24,13 +24,7 @@ import org.meshtastic.proto.User
 // a single exported data package (containing truststore.p12 + client.p12) works for
 // both Meshtastic-iOS and Meshtastic-Android without reconfiguration in ATAK/iTAK.
 internal const val DEFAULT_TAK_PORT = 8089
-
-// Default contact endpoint for mesh peers (the real endpoint is never carried over
-// LoRa). MUST be the TAK "reply via this server" form `*:-1:stcp`: it makes ATAK route
-// directed GeoChat / TAK-Talk (`<marti>`) back down the Meshtastic server stream. A
-// concrete host (e.g. `0.0.0.0:4242:tcp`) makes ATAK attempt a dead direct connection,
-// so directed messages never reach the mesh while broadcast PLI still works.
-internal const val DEFAULT_TAK_ENDPOINT = "*:-1:stcp"
+internal const val DEFAULT_TAK_ENDPOINT = "0.0.0.0:4242:tcp"
 
 // Bundled certificate password — matches iOS (`"meshtastic"`). Used for the
 // server.p12 / client.p12 PKCS#12 files shipped under `tak_certs/` on the classpath.

gradle/libs.versions.toml

@@ -88,7 +88,7 @@ kable = "0.43.0"
 mqttastic = "0.3.6"
 jmdns = "3.6.3"
 qrcode-kotlin = "4.5.0"
-takpacket-sdk = "0.5.1"
+takpacket-sdk = "0.5.0"
 
 # Gradle Plugins
 develocity = "4.4.2"