feat: display offline bundle version in TUI

Read bundleVersion from manifest.json in offline mode and display it
as "offline-v{N}" in the TUI instead of the build version.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: Chetic

packages/opencode/src/cli/cmd/tui/routes/home.tsx

@@ -132,7 +132,7 @@ export function Home() {
         </box>
         <box flexGrow={1} />
         <box flexShrink={0}>
-          <text fg={theme.textMuted}>{Installation.VERSION}</text>
+          <text fg={theme.textMuted}>{Installation.DISPLAY_VERSION}</text>
         </box>
       </box>
     </>

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

@@ -116,7 +116,7 @@ export function Header() {
               <box flexGrow={1} flexShrink={1} />
               <box flexDirection="row" gap={1} flexShrink={0}>
                 <ContextInfo context={context} cost={cost} />
-                <text fg={theme.textMuted}>v{Installation.VERSION}</text>
+                <text fg={theme.textMuted}>{Installation.DISPLAY_VERSION}</text>
               </box>
             </box>
           </Match>
@@ -125,7 +125,7 @@ export function Header() {
               <Title session={session} />
               <box flexDirection="row" gap={1} flexShrink={0}>
                 <ContextInfo context={context} cost={cost} />
-                <text fg={theme.textMuted}>v{Installation.VERSION}</text>
+                <text fg={theme.textMuted}>{Installation.DISPLAY_VERSION}</text>
               </box>
             </box>
           </Match>

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

@@ -303,7 +303,7 @@ export function Sidebar(props: { sessionID: string; overlay?: boolean }) {
             <span style={{ fg: theme.text }}>
               <b>Code</b>
             </span>{" "}
-            <span>{Installation.VERSION}</span>
+            <span>{Installation.DISPLAY_VERSION}</span>
           </text>
         </box>
       </box>

packages/opencode/src/installation/index.ts

@@ -1,12 +1,27 @@
 import { BusEvent } from "@/bus/bus-event"
 import path from "path"
+import fs from "fs"
 import { $ } from "bun"
 import z from "zod"
 import { NamedError } from "@opencode-ai/util/error"
 import { Log } from "../util/log"
 import { iife } from "@/util/iife"
 import { Flag } from "../flag/flag"
 
+function readBundleVersion(): string | undefined {
+  if (!Flag.OPENCODE_OFFLINE_DEPS_PATH) return undefined
+  try {
+    // The manifest is in the parent directory of deps (bundle root)
+    const bundleRoot = path.dirname(Flag.OPENCODE_OFFLINE_DEPS_PATH)
+    const manifestPath = path.join(bundleRoot, "manifest.json")
+    const content = fs.readFileSync(manifestPath, "utf-8")
+    const manifest = JSON.parse(content)
+    return manifest.bundleVersion
+  } catch {
+    return undefined
+  }
+}
+
 declare global {
   const OPENCODE_VERSION: string
   const OPENCODE_CHANNEL: string
@@ -183,6 +198,9 @@ export namespace Installation {
   export const CHANNEL = typeof OPENCODE_CHANNEL === "string" ? OPENCODE_CHANNEL : "local"
   export const USER_AGENT = `opencode/${CHANNEL}/${VERSION}/${Flag.OPENCODE_CLIENT}`
 
+  const BUNDLE_VERSION = readBundleVersion()
+  export const DISPLAY_VERSION = BUNDLE_VERSION ? `offline-v${BUNDLE_VERSION}` : VERSION
+
   export async function latest(installMethod?: Method) {
     const detectedMethod = installMethod || (await method())