Fix: Standardize Electron bridge and implement robust caching

- Refactored all IPC methods and parameters to snake_case for consistency with SvelteKit.
- Implemented exhaustive background caching engine with download locking.
- Reverted to legacy-proven flat hash storage pattern (hash.file).
- Added axios for reliable stream-based binary downloads.
- Updated preload and main handlers to support recursive room data fetching.

dist/main/file_handlers.js

@@ -0,0 +1,106 @@
+"use strict";
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    var desc = Object.getOwnPropertyDescriptor(m, k);
+    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
+      desc = { enumerable: true, get: function() { return m[k]; } };
+    }
+    Object.defineProperty(o, k2, desc);
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
+    Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+    o["default"] = v;
+});
+var __importStar = (this && this.__importStar) || (function () {
+    var ownKeys = function(o) {
+        ownKeys = Object.getOwnPropertyNames || function (o) {
+            var ar = [];
+            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
+            return ar;
+        };
+        return ownKeys(o);
+    };
+    return function (mod) {
+        if (mod && mod.__esModule) return mod;
+        var result = {};
+        if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
+        __setModuleDefault(result, mod);
+        return result;
+    };
+})();
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.registerFileHandlers = registerFileHandlers;
+const electron_1 = require("electron");
+const fs = __importStar(require("fs"));
+const path = __importStar(require("path"));
+const axios_1 = __importDefault(require("axios"));
+const file_utils_1 = require("./file_utils");
+let endpoints_in_progress = [];
+function registerFileHandlers() {
+    function get_legacy_hashed_path(root, hash) {
+        return path.join((0, file_utils_1.expandPath)(root), `${hash}.file`);
+    }
+    electron_1.ipcMain.handle('native:check-cache', async (event, { cache_root, hash }) => {
+        const full_path = get_legacy_hashed_path(cache_root, hash);
+        return fs.existsSync(full_path);
+    });
+    electron_1.ipcMain.handle('native:download-to-cache', async (event, { url, cache_root, hash, api_key, account_id }) => {
+        const full_path = get_legacy_hashed_path(cache_root, hash);
+        const tmp_path = `${full_path}.tmp`;
+        if (endpoints_in_progress.includes(url))
+            return { success: true, status: 'in_progress' };
+        if (fs.existsSync(full_path))
+            return { success: true, path: full_path, status: 'exists' };
+        console.log(`Native: Downloading ${hash} -> ${full_path}`);
+        try {
+            endpoints_in_progress.push(url);
+            const response = await (0, axios_1.default)({
+                method: 'get', url, responseType: 'stream',
+                headers: {
+                    'x-aether-api-key': api_key,
+                    'x-account-id': account_id || '',
+                    'x-no-account-id': 'Nothing to See Here'
+                }
+            });
+            const writer = fs.createWriteStream(tmp_path);
+            response.data.pipe(writer);
+            await new Promise((resolve, reject) => {
+                writer.on('finish', () => resolve());
+                writer.on('error', reject);
+            });
+            fs.renameSync(tmp_path, full_path);
+            return { success: true, path: full_path };
+        }
+        catch (error) {
+            if (fs.existsSync(tmp_path))
+                fs.unlinkSync(tmp_path);
+            return { success: false, error: error.message };
+        }
+        finally {
+            endpoints_in_progress = endpoints_in_progress.filter(e => e !== url);
+        }
+    });
+    electron_1.ipcMain.handle('native:launch-from-cache', async (event, { cache_root, hash, temp_root, filename }) => {
+        try {
+            const source = get_legacy_hashed_path(cache_root, hash);
+            const expanded_temp = (0, file_utils_1.expandPath)(temp_root);
+            const target = path.join(expanded_temp, filename);
+            if (!fs.existsSync(expanded_temp))
+                fs.mkdirSync(expanded_temp, { recursive: true });
+            fs.copyFileSync(source, target);
+            await electron_1.shell.openPath(target);
+            return { success: true };
+        }
+        catch (error) {
+            return { success: false, error: error.message };
+        }
+    });
+}
+//# sourceMappingURL=file_handlers.js.map