feat: add version to session header and /status dialog (#8802)

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

@@ -7,6 +7,7 @@ import { SplitBorder } from "@tui/component/border"
 import type { AssistantMessage, Session } from "@opencode-ai/sdk/v2"
 import { useCommandDialog } from "@tui/component/dialog-command"
 import { useKeybind } from "../../context/keybind"
+import { Installation } from "@/installation"
 
 const Title = (props: { session: Accessor<Session> }) => {
   const { theme } = useTheme()
@@ -113,13 +114,19 @@ export function Header() {
                 </text>
               </box>
               <box flexGrow={1} flexShrink={1} />
-              <ContextInfo context={context} cost={cost} />
+              <box flexDirection="row" gap={1} flexShrink={0}>
+                <ContextInfo context={context} cost={cost} />
+                <text fg={theme.textMuted}>v{Installation.VERSION}</text>
+              </box>
             </box>
           </Match>
           <Match when={true}>
             <box flexDirection="row" justifyContent="space-between" gap={1}>
               <Title session={session} />
-              <ContextInfo context={context} cost={cost} />
+              <box flexDirection="row" gap={1} flexShrink={0}>
+                <ContextInfo context={context} cost={cost} />
+                <text fg={theme.textMuted}>v{Installation.VERSION}</text>
+              </box>
             </box>
           </Match>
         </Switch>