fix(tui): standardize OpenCode product casing (#36717)

packages/tui/src/attention.ts

@@ -38,7 +38,7 @@ type TuiAttentionHost = TuiAttention & {
   dispose(): void
 }
 
-const DEFAULT_TITLE = "opencode"
+const DEFAULT_TITLE = "OpenCode"
 const DEFAULT_PACK_ID = "opencode.default"
 const TITLE_LIMIT = 80
 const MESSAGE_LIMIT = 240

packages/tui/src/component/error-component.tsx

@@ -108,7 +108,7 @@ export function ErrorComponent(props: { error: Error; reset: () => void; mode?:
         {/* Headline */}
         <box flexDirection="column" alignItems="center" flexShrink={0}>
           <text attributes={TextAttributes.BOLD} fg={colors.text}>
-            opencode crashed
+            OpenCode crashed
           </text>
           <Show when={showSubtext()}>
             <text fg={colors.muted}>An unexpected error stopped the session.</text>
@@ -192,7 +192,7 @@ export function ErrorComponent(props: { error: Error; reset: () => void; mode?:
                 ? "Report copied — paste it into a new GitHub issue."
                 : "Copy the report and open a GitHub issue to help us fix this."}
             </text>
-            <text fg={colors.muted}>opencode {InstallationVersion}</text>
+            <text fg={colors.muted}>OpenCode {InstallationVersion}</text>
           </box>
         </Show>
       </box>
@@ -211,7 +211,7 @@ function buildIssueURL(message: string, stack: string) {
   url.searchParams.set("terminal", describeTerminal())
   url.searchParams.set(
     "reproduce",
-    "Reported automatically from the opencode crash screen. If you can, describe what you were doing when it crashed.",
+    "Reported automatically from the OpenCode crash screen. If you can, describe what you were doing when it crashed.",
   )
 
   // Budget the stack against the fully URL-encoded length (not the raw length) so
@@ -220,7 +220,7 @@ function buildIssueURL(message: string, stack: string) {
   // so measuring url.toString() is both correct and safe on any input.
   const MAX_URL_LENGTH = 6000
   const marker = "\n... (truncated)"
-  const head = `The opencode TUI crashed with an unexpected error.\n\n**Error:** ${message}\n\n**Stack trace:**\n`
+  const head = `The OpenCode TUI crashed with an unexpected error.\n\n**Error:** ${message}\n\n**Stack trace:**\n`
   const setBody = (body: string) => url.searchParams.set("description", head + "```\n" + body + "\n```")
 
   setBody(stack)