refactor(session): move context into prompt footer (#19486)

packages/opencode/src/cli/cmd/tui/routes/session/index.tsx

@@ -51,7 +51,6 @@ import { useSDK } from "@tui/context/sdk"
 import { useCommandDialog } from "@tui/component/dialog-command"
 import type { DialogContext } from "@tui/ui/dialog"
 import { useKeybind } from "@tui/context/keybind"
-import { Header } from "./header"
 import { parsePatch } from "diff"
 import { useDialog } from "../../ui/dialog"
 import { TodoItem } from "../../component/todo-item"
@@ -154,7 +153,6 @@ export function Session() {
   const [showDetails, setShowDetails] = kv.signal("tool_details_visibility", true)
   const [showAssistantMetadata, setShowAssistantMetadata] = kv.signal("assistant_metadata_visibility", true)
   const [showScrollbar, setShowScrollbar] = kv.signal("scrollbar_visible", true)
-  const [showHeader, setShowHeader] = kv.signal("header_visible", true)
   const [diffWrapMode] = kv.signal<"word" | "none">("diff_wrap_mode", "word")
   const [animationsEnabled, setAnimationsEnabled] = kv.signal("animations_enabled", true)
   const [showGenericToolOutput, setShowGenericToolOutput] = kv.signal("generic_tool_output_visibility", false)
@@ -635,15 +633,6 @@ export function Session() {
         dialog.clear()
       },
     },
-    {
-      title: showHeader() ? "Hide header" : "Show header",
-      value: "session.toggle.header",
-      category: "Session",
-      onSelect: (dialog) => {
-        setShowHeader((prev) => !prev)
-        dialog.clear()
-      },
-    },
     {
       title: showGenericToolOutput() ? "Hide generic tool output" : "Show generic tool output",
       value: "session.toggle.generic_tool_output",
@@ -1045,11 +1034,8 @@ export function Session() {
       }}
     >
       <box flexDirection="row">
-        <box flexGrow={1} paddingBottom={1} paddingTop={1} paddingLeft={2} paddingRight={2} gap={1}>
+        <box flexGrow={1} paddingBottom={1} paddingLeft={2} paddingRight={2} gap={1}>
           <Show when={session()}>
-            <Show when={showHeader() && (!sidebarVisible() || !wide())}>
-              <Header />
-            </Show>
             <scrollbox
               ref={(r) => (scroll = r)}
               viewportOptions={{
@@ -1068,6 +1054,7 @@ export function Session() {
               flexGrow={1}
               scrollAcceleration={scrollAcceleration()}
             >
+              <box height={1} />
               <For each={messages()}>
                 {(message, index) => (
                   <Switch>