b072857d68
- Upgraded LauncherBackgroundSync to force-hydrate OS metadata (home/tmp) on mount. - Hardened electron_relay.ts with robust placeholder resolution and global regex. - Restored safe handover by making native.launch_from_cache presentation-aware. - Integrated heartbeat and sync status into the formal Launcher Config UI. - Added comprehensive technical documentation for the 2026 native architecture.
71 lines
3.4 KiB
Markdown
71 lines
3.4 KiB
Markdown
# Aether Native Electron App - V3 Architecture (2026)
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## 1. Overview
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The Aether Native App serves as the OS-level bridge for the SvelteKit frontend. It enables functionality that is normally restricted by browser sandboxing, such as local filesystem management, hardware telemetry, and direct control of third-party presentation software (PowerPoint, Keynote, LibreOffice).
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---
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## 2. The Three-Layer Architecture
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### 2.1 The Engine (`electron_native.js`)
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* **Process:** Main Process (Node.js)
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* **Role:** Performs the actual OS-level operations.
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* **Key Responsibilities:**
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* Executing shell commands via `child_process`.
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* Managing the permanent Hashed Cache (`file_cache/`).
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* Performing atomic "Safe Handover" copies to the operational `temp/` directory.
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* Resolving global path placeholders like `[home]` and `[tmp]`.
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### 2.2 The Bridge (`preload.js`)
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* **Process:** Preload Script
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* **Role:** The security gatekeeper.
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* **Key Responsibilities:**
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* Uses Electron's `contextBridge` to securely expose specific Main Process functions to the UI.
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* Exposes the `window.aetherNative` object.
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* Ensures that only whitelisted IPC channels can be triggered by the renderer.
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### 2.3 The Messenger (`electron_relay.ts`)
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* **Process:** Renderer Process (SvelteKit)
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* **Role:** The TypeScript API used by Svelte components.
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* **Key Responsibilities:**
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* Detecting if the app is running in "Native Mode".
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* Providing a clean, typed interface for native calls.
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* Implementing "Smart Fallbacks" (e.g., resolving placeholders UI-side if the bridge is outdated).
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---
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## 3. Core Lifecycle
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1. **Seed Phase:** The Electron shell reads `~/seed.json` to identify the device.
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2. **Hydration Phase:** The shell authenticates with the Aether V3 API to pull device-specific settings (room assignment, sync timers).
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3. **Injection Phase:** The shell injects the **JWT (Auth Token)** and **Native Config** into the SvelteKit environment.
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4. **Observation Phase:** `LauncherBackgroundSync.svelte` force-hydrates absolute OS paths (Home/Tmp) into the global `ae_loc` store for immediate use.
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---
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## 4. Native Tool Library (`window.aetherNative`)
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### File & Cache Management
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- `check_cache({hash})`: Verify if a file exists in the hidden hashed storage.
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- `download_to_cache({url, hash})`: Secure background download using the native API key.
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- `launch_from_cache({hash, filename})`: **Safe Handover** — copies from cache to temp with the original name and triggers the launcher.
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### OS Execution (The "Actuators")
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- `launch_presentation({path, app})`: Intelligent application selection.
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- **Linux:** Triggers `libreoffice --impress`.
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- **macOS:** Triggers AppleScript for Keynote/PowerPoint.
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- `run_cmd({cmd})`: Executes raw shell commands with automatic `[home]` and `[tmp]` resolution.
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- `kill_processes([names])`: Force-closes presentation apps to clean the podium between sessions.
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### System Metadata
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- `get_device_info()`: Provides OS version, CPU/RAM stats, and absolute system paths.
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---
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## 5. Path Placeholder System
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To maintain cross-platform compatibility, the system uses a placeholder syntax for all paths:
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- `[home]`: Resolves to the user's home directory (e.g., `/home/scott` or `/Users/scott`).
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- `[tmp]`: Resolves to the system temporary directory.
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**Resolution Logic:** All native handlers utilize a global regex (`/\[home\]/g`) to ensure these are converted to absolute paths before any disk or shell operation occurs.
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