feat(app): cache session-scoped stores, optional context gating

packages/ui/src/context/helper.tsx

@@ -3,12 +3,19 @@ import { createContext, createMemo, Show, useContext, type ParentProps, type Acc
 export function createSimpleContext<T, Props extends Record<string, any>>(input: {
   name: string
   init: ((input: Props) => T) | (() => T)
+  gate?: boolean
 }) {
   const ctx = createContext<T>()
 
   return {
     provider: (props: ParentProps<Props>) => {
       const init = input.init(props)
+      const gate = input.gate ?? true
+
+      if (!gate) {
+        return <ctx.Provider value={init}>{props.children}</ctx.Provider>
+      }
+
       // Access init.ready inside the memo to make it reactive for getter properties
       const isReady = createMemo(() => {
         // @ts-expect-error