Meshtastic-Android/core/navigation
James Rich 8701b8645d feat(remote-shell): PTY-over-mesh terminal with retro-CRT UI
Adds a full RemoteShell (portnum=13) implementation matching Jonathan's
dmshell_client.py protocol:

Protocol layer:
- Seq/ack reliability: incrementing seq on every non-ACK frame, piggybacked
  ack_seq, out-of-order frame buffering, gap detection and replay requests
- TX history ring buffer (last 50 frames) for retransmission on request
- ACK frames carry optional 4-byte big-endian REPLAY_REQUEST payload
- PING/PONG heartbeat with 8-byte status payload (lastTxSeq, lastRxSeq);
  PONG handler triggers replay if peer is behind
- PKI: DataPacket.PKC_CHANNEL_INDEX so CommandSenderImpl applies
  Curve25519 encryption (firmware rejects non-PKI DMShell packets)
- Input batching: 500ms debounce (matches Python client), immediate flush
  on \r, \t, buffer-full (64 bytes), or Enter

Terminal UI:
- Retro-CRT composables: TerminalCanvas (phosphor glow, two-pass bloom),
  ScanlinesOverlay, FlickerEffect (animated brightness variation),
  CrtCurvatureModifier (AGSL barrel distortion on Android 12+, no-op on JVM)
- PhosphorPreset enum: GREEN (P1), AMBER (P3), WHITE (P4)
- Pending-input rendered inline in preset.dim colour; snaps to confirmed on flush
- Hidden zero-size BasicTextField captures soft and hardware keyboard input
- Phosphor colour picker dropdown in top bar

Capabilities gate:
- supportsRemoteShell gated to UNRELEASED (9.9.9)
- Entry only visible in AdministrationSection when node.capabilities.supportsRemoteShell
2026-04-15 13:13:10 -05:00
..
src feat(remote-shell): PTY-over-mesh terminal with retro-CRT UI 2026-04-15 13:13:10 -05:00
build.gradle.kts fix: harden reliability, clean up KMP compliance, and improve code quality (#5023) 2026-04-09 18:21:46 +00:00
README.md ci: cache Robolectric SDK jars to prevent flaky SocketException failures (#5045) 2026-04-10 10:05:07 -05:00

:core:navigation

Overview

The :core:navigation module defines the type-safe Navigation 3 route model for Android and Desktop using Kotlin Serialization.

Key Components

1. Routes.kt

Contains serializable NavKey route classes/objects used by shared feature graphs.

2. DeepLinkRouter.kt

Parses Meshtastic deep-link URIs and synthesizes a typed backstack (for example /nodes/1234/device-metrics).

3. NavigationConfig.kt

Defines MeshtasticNavSavedStateConfig using sealed interface hierarchies so Navigation 3 backstacks can be persisted/restored safely — new routes are auto-registered at compile time.

Features

  • Type-Safety: Uses serializable NavKey routes instead of ad-hoc string routes.
  • Deep-link synthesis: Converts incoming URIs into typed backstacks via DeepLinkRouter.
  • Centralized definition: Routes and saved-state serializers are declared in one place to avoid feature-module cycles.

Usage

Feature modules depend on this module to define their entry points and navigate via NavBackStack<NavKey>.

import androidx.navigation3.runtime.NavBackStack
import androidx.navigation3.runtime.NavKey
import org.meshtastic.core.navigation.NodesRoute

fun openNodeDetail(backStack: NavBackStack<NavKey>, destNum: Int) {
    backStack.add(NodesRoute.NodeDetail(destNum))
}

Module dependency graph

graph TB
  :core:navigation[navigation]:::kmp-library-compose

classDef android-application fill:#CAFFBF,stroke:#000,stroke-width:2px,color:#000;
classDef android-application-compose fill:#CAFFBF,stroke:#000,stroke-width:2px,color:#000;
classDef compose-desktop-application fill:#CAFFBF,stroke:#000,stroke-width:2px,color:#000;
classDef android-feature fill:#FFD6A5,stroke:#000,stroke-width:2px,color:#000;
classDef android-library fill:#9BF6FF,stroke:#000,stroke-width:2px,color:#000;
classDef android-library-compose fill:#9BF6FF,stroke:#000,stroke-width:2px,color:#000;
classDef android-test fill:#A0C4FF,stroke:#000,stroke-width:2px,color:#000;
classDef jvm-library fill:#BDB2FF,stroke:#000,stroke-width:2px,color:#000;
classDef kmp-feature fill:#FFD6A5,stroke:#000,stroke-width:2px,color:#000;
classDef kmp-library-compose fill:#FFC1CC,stroke:#000,stroke-width:2px,color:#000;
classDef kmp-library fill:#FFC1CC,stroke:#000,stroke-width:2px,color:#000;
classDef unknown fill:#FFADAD,stroke:#000,stroke-width:2px,color:#000;