Exit-screen resume command always says "opencode", even when invoked as opencode2

Description

The published `@opencode/cli` package registers this binary under two bin names, `opencode` and `opencode2` (so a v2 install doesn't clobber a separately installed v1 `opencode`). When you exit an interactive session, the exit splash prints a resume command to copy-paste, but it always hardcodes the literal string `opencode --mini -s `, regardless of which name you actually launched the binary with.

If `opencode` in your PATH resolves to something else (e.g. a separate v1 install, as in my case), the printed resume command runs the wrong binary and fails to find the session — the hint should say `opencode2 --mini -s ` when that's how it was invoked.

The hardcoded string is in `packages/opencode/src/cli/cmd/run/splash.ts` (the `build()` function's "exit" branch).

Plugins

opencode-pty, oh-my-opencode-slim

OpenCode version

2.0.7 (installed as `opencode2`)

Steps to reproduce

1. Install `@opencode/cli` such that it's available as `opencode2` in PATH (e.g. because `opencode` already points at a separate v1 install).
2. Run `opencode2` and start an interactive session.
3. Exit the session.
4. The exit screen prints `Continue opencode --mini -s ses_...` instead of `opencode2 --mini -s ses_...`.
5. Running the printed command invokes the wrong binary and can't resume the session.

Start in packages/opencode/src/cli/cmd/run/splash.ts and inspect the build() function's exit branch, along with how the launched command name is available there. Make the resume hint use the invoked binary name instead of hardcoding opencode, then verify the exit screen when launching through opencode2.