refactor: convert to bun workspaces monorepo

- Move web app into apps/web/
- Create packages/shared/ with shared types
- Create plugins/decky-vault/ scaffold
- Root package.json manages workspaces only

plugins/decky-vault/src/index.tsx

@@ -0,0 +1,32 @@
+import { DeckyVaultImportV1 } from "@deckyvault/shared"
+
+interface PluginSettings {
+  apiKey: string
+  autoRecord: boolean
+  exportPath: string
+}
+
+let settings: PluginSettings = {
+  apiKey: "",
+  autoRecord: false,
+  exportPath: "/home/deck/Downloads",
+}
+
+export default {
+  name: "DeckyVault",
+  content: () => {
+    // Main plugin UI — will be implemented in a future phase
+    return <div>DeckyVault Plugin</div>
+  },
+  onSettingUpdate: (newSettings: Partial<PluginSettings>) => {
+    settings = { ...settings, ...newSettings }
+  },
+  onGameSessionStart: (appId: number) => {
+    DeckyPlugin.log(`[DeckyVault] Game started: ${appId}`)
+    // Future: start MangoHud monitoring
+  },
+  onGameSessionEnd: (appId: number) => {
+    DeckyPlugin.log(`[DeckyVault] Game stopped: ${appId}`)
+    // Future: stop monitoring, prompt export/upload
+  },
+}

plugins/decky-vault/src/types.d.ts

@@ -0,0 +1,32 @@
+// Decky Loader API type declarations
+// These mirror the APIs available in the Steam Deck game mode CEF context
+
+declare global {
+  const DeckyPlugin: {
+    log: (...args: unknown[]) => void
+    debug: (...args: unknown[]) => void
+    info: (...args: unknown[]) => void
+    error: (...args: unknown[]) => void
+  }
+
+  const SteamClient: {
+    Apps: {
+      GetAppData: (appId: number) => Promise<{
+        strAppName: string
+        strShortcutName: string
+        strExePath: string
+      }>
+      RegisterForGameStarted: (
+        callback: (appId: number) => void,
+      ) => { unregister: () => void }
+      RegisterForGameStopped: (
+        callback: (appId: number) => void,
+      ) => { unregister: () => void }
+    }
+    System: {
+      GetOSVersion: () => Promise<string>
+    }
+  }
+}
+
+export {}