Hermes Android Native Remote Client

A production-grade, native Android client application for Hermes, implementing Protocol & Architecture Contract v1 with Multi-Hermes Connection Manager and Unified Sessions.

Built with Kotlin, Jetpack Compose (Material 3), Coroutines, Room Database, OkHttp, and Android Keystore (EncryptedSharedPreferences).

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🌟 Architecture Overview

   ┌─────────────────────────────────────────────────────────────────────────┐
   │                          Hermes Android Client                          │
   │  ┌───────────────────────────────────────────────────────────────────┐  │
   │  │                      Jetpack Compose UI (M3)                      │  │
   │  │   • Multi-Host Switcher • Unified Sessions • Attributed Chat      │  │
   │  └─────────────────────────────────┬─────────────────────────────────┘  │
   │                                    │ StateFlow / Actions                │
   │  ┌─────────────────────────────────▼─────────────────────────────────┐  │
   │  │                   Unified Session Repository                      │  │
   │  │   • Logical Unified Sessions   • Context Synchronization Delta    │  │
   │  │   • Host-Tagged Event Routing  • Local Persistence (Room DB)      │  │
   │  └──────────────────┬──────────────────────────────┬─────────────────┘  │
   │                     │                              │                    │
   │  ┌──────────────────▼──────────────────┐  ┌────────▼─────────────────┐  │
   │  │      Hermes Connection Manager      │  │   Encrypted Token Vault  │  │
   │  │   • Map<HostId, HostRuntime>        │  │   (Host-Scoped Keystore) │  │
   │  └───────┬─────────────────────────┬───┘  └──────────────────────────┘  │
   │          │                         │                                    │
   │  ┌───────▼─────────────┐   ┌───────▼─────────────┐                      │
   │  │   Host #1 Runtime   │   │   Host #2 Runtime   │                      │
   │  │  (OkHttp WS + REST) │   │  (OkHttp WS + REST) │                      │
   │  └───────┬─────────────┘   └───────┬─────────────┘                      │
   └──────────┼─────────────────────────┼────────────────────────────────────┘
              │                         │
              ▼                         ▼
   ┌──────────────────────┐  ┌──────────────────────┐
   │    Hermes Host #1    │  │    Hermes Host #2    │
   │   (Windows Office)   │  │    (Linux Server)    │
   │   `hermes serve`     │  │   `hermes serve`     │
   └──────────────────────┘  └──────────────────────┘

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🚀 Key Multi-Host Features

1. Multi-Hermes Connection Manager:

   • Save and manage multiple independent Hermes installations (e.g. Workstation, Linux Server, Cloud VM).
   • Independent WebSocket connections, concurrent state management, and isolated reconnect loops.
   • Individual host health badges: Online, Connecting, Offline, Auth Expired.

2. Unified Sessions & Context Synchronization:

   • Create one logical conversation (UnifiedSession) that spans multiple physical Hermes hosts.
   • Seamlessly switch active execution hosts mid-conversation via the top-bar dropdown.
   • Delta Context Sync: Injects conversation history and task context to newly attached hosts automatically without full-history re-transmission or secret leakage.
   • Host Attribution: Every response bubble, tool card, and thinking trace displays its originating host badge (e.g. [Office PC], [Linux Server]).
   • Non-Blocking Host Switching: If Host #1 is executing a long tool or computation and you switch to Host #2, Host #1 completes its work in the background and commits results into the shared timeline.

3. Isolated Host Security & Approvals:

   • Host-scoped credentials stored securely in Android Keystore (hostId -> tokens).
   • Host-Targeted Approvals & Clarifications: Dangerous command approvals (approval.request) and sudo prompts route back strictly to the exact host runtime and native session that emitted them.

4. Local Persistence (Room DB):

   • Full offline caching for UnifiedSession, HostSessionBinding, and UnifiedMessage.
   • Raw native session browser for inspecting individual host histories.

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🖥️ Hermes Host Setup

Windows Host

hermes serve --host 0.0.0.0 --port 9119

With OAuth / GitHub Auth:

$env:HERMES_AUTH_REQUIRED="true"
$env:HERMES_AUTH_PROVIDERS="github"
$env:HERMES_AUTH_GITHUB_CLIENT_ID="<your_client_id>"
$env:HERMES_AUTH_GITHUB_CLIENT_SECRET="<your_client_secret>"
hermes serve --host 0.0.0.0 --port 9119

Linux Host

export HERMES_AUTH_REQUIRED="true"
export HERMES_AUTH_PROVIDERS="github"
export HERMES_AUTH_GITHUB_CLIENT_ID="<your_client_id>"
export HERMES_AUTH_GITHUB_CLIENT_SECRET="<your_client_secret>"

hermes serve --host 0.0.0.0 --port 9119

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🧪 Testing & Verification

Run the full automated test suite:

.\gradlew.bat testDebugUnitTest

Run Android Lint:

.\gradlew.bat lintDebug

Assemble Debug APK:

.\gradlew.bat assembleDebug