fix blank page, icons, add logging and EVM balance chart

- Fix blank page: set viewsRoot, base:'', history.replaceState in index.html
- Fix chain icons: add dist/icons→views/mainview/icons copy rule
- Add file-based logger (src/bun/lib/logger.ts) with logToFile RPC
- Add frontend error overlay + global error listeners in index.svelte
- Add EVM balance chart with time range filters (EvmDashboard.svelte)
- Replace console.log with file logger throughout backend
- Improve get-env.ts to read version.json for channel detection

apps/desktop/src/bun/index.ts

@@ -9,6 +9,7 @@ import {
 import { migrate } from 'drizzle-orm/bun-sqlite/migrator'
 import { db } from './lib/db'
 import { join } from 'path'
+import { existsSync } from 'fs'
 import { getENV } from './lib/get-env'
 import { createEvmHandlers } from './rpc/evm'
 import { createMoneroHandlers } from './rpc/monero'
@@ -17,15 +18,22 @@ import { canPromptTouchID, promptTouchID } from './lib/biometric'
 import { sqlite } from './lib/sqlite'
 import { evmWallets } from './lib/db/schema'
 import type { RPC } from '../lib/rpc-schema'
+import { log, logError } from './lib/logger'
 
 const env = getENV()
 
-console.log(env)
+log(`env: ${JSON.stringify(env)}`)
 
-if (env.env === 'prod') {
-	migrate(db, {
-		migrationsFolder: join(PATHS.RESOURCES_FOLDER, 'app', 'drizzle'),
-	})
+if (env.env === 'stable') {
+	try {
+		log('running migrations...')
+		migrate(db, {
+			migrationsFolder: join(PATHS.RESOURCES_FOLDER, 'app', 'drizzle'),
+		})
+		log('migrations complete')
+	} catch (e) {
+		logError('migration failed', e)
+	}
 }
 
 const DEV_SERVER_PORT = 5173
@@ -33,19 +41,17 @@ const DEV_SERVER_URL = `http://localhost:${DEV_SERVER_PORT}`
 
 async function getMainViewUrl(): Promise<string> {
 	const channel = await Updater.localInfo.channel()
+	log(`channel from Updater: ${channel}`)
 	if (channel === 'dev') {
 		try {
 			await fetch(DEV_SERVER_URL, { method: 'HEAD' })
-			console.log(
-				`HMR enabled: Using Vite dev server at ${DEV_SERVER_URL}`,
-			)
+			log(`HMR enabled: Using Vite dev server at ${DEV_SERVER_URL}`)
 			return DEV_SERVER_URL
 		} catch {
-			console.log(
-				"Vite dev server not running. Run 'bun run dev:hmr' for HMR support.",
-			)
+			log("Vite dev server not running, falling back to bundled view")
 		}
 	}
+	log('using bundled view')
 	return 'views://mainview/index.html'
 }
 
@@ -76,6 +82,12 @@ ApplicationMenu.setApplicationMenu([
 
 const url = await getMainViewUrl()
 
+log(`view URL: ${url}`)
+const viewsRoot = join(PATHS.RESOURCES_FOLDER, 'app', 'views')
+log(`viewsRoot: ${viewsRoot}`)
+log(`viewsRoot exists: ${existsSync(viewsRoot)}`)
+log(`index.html exists: ${existsSync(join(viewsRoot, 'mainview', 'index.html'))}`)
+
 const moneroState = {
 	manager: null as MoneroWalletState | null,
 	downloading: false,
@@ -159,14 +171,19 @@ rpc.setRequestHandler({
 			margin: 1,
 		})
 	},
+	logToFile: async ({ message }) => {
+		log(message)
+	},
 	...createEvmHandlers(rpc, syncState),
 	...createMoneroHandlers(moneroState),
 })
 
+log('creating BrowserWindow...')
 const win = new BrowserWindow({
 	title: 'Koins',
 	url,
 	rpc,
+	viewsRoot: join(PATHS.RESOURCES_FOLDER, 'app', 'views'),
 	frame: {
 		width: 900,
 		height: 700,
@@ -174,5 +191,6 @@ const win = new BrowserWindow({
 		y: 200,
 	},
 })
+log('BrowserWindow created')
 
-console.log('Koins app started!')
+log('Koins app started!')

apps/desktop/src/bun/lib/get-env.ts

@@ -1,21 +1,28 @@
-const env = (Bun.env.ELECTROBUN_ENV as string) || 'dev'
+import { PATHS } from 'electrobun/bun'
+import { readFileSync, existsSync } from 'fs'
+import { join } from 'path'
 
-console.log('ENV', env)
-
-export const getENV = () => {
-	let appName
-	let dbFilename
-	if (env === 'stable') {
-		appName = 'koins'
-		dbFilename = 'koins.db'
-	} else {
-		appName = 'koins-dev'
-		dbFilename = 'koins-dev.db'
+function detectEnv(): { env: string; appName: string; dbFilename: string } {
+	const channel = (Bun.env.ELECTROBUN_ENV as string) || ''
+	if (channel === 'stable') {
+		return { env: 'stable', appName: 'koins', dbFilename: 'koins.db' }
 	}
 
-	return {
-		env,
-		appName,
-		dbFilename,
-	}
+	try {
+		const p = join(PATHS.RESOURCES_FOLDER, 'version.json')
+		if (existsSync(p)) {
+			const { channel: c } = JSON.parse(readFileSync(p, 'utf-8'))
+			if (c === 'stable') {
+				return { env: 'stable', appName: 'koins', dbFilename: 'koins.db' }
+			}
+		}
+	} catch {}
+
+	return { env: 'dev', appName: 'koins-dev', dbFilename: 'koins-dev.db' }
 }
+
+const env = detectEnv()
+
+console.log('ENV', env.env)
+
+export const getENV = () => env

apps/desktop/src/bun/lib/logger.ts

@@ -0,0 +1,28 @@
+import { appendFileSync, mkdirSync, existsSync } from 'fs'
+import { join } from 'path'
+import envPaths from 'env-paths'
+import { getENV } from './get-env'
+
+const { appName } = getENV()
+const { data } = envPaths(appName, { suffix: '' })
+const logDir = join(data, 'logs')
+mkdirSync(logDir, { recursive: true })
+
+const date = () => {
+	const d = new Date()
+	return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(d.getDate()).padStart(2, '0')}`
+}
+
+const file = join(logDir, `${appName}-${date()}.log`)
+
+export const log = (msg: string) => {
+	const line = `[${new Date().toISOString()}] ${msg}\n`
+	try {
+		appendFileSync(file, line, 'utf-8')
+	} catch {}
+}
+
+export const logError = (msg: string, err?: unknown) => {
+	const detail = err instanceof Error ? err.stack || err.message : String(err ?? '')
+	log(`[ERROR] ${msg}${detail ? ' — ' + detail : ''}`)
+}