Finish the user-visible rebrand: --version, --help, completions

Running the CI-built binary showed the rebrand was half done. The
executable was named chutescoder, but:

    $ chutescoder --version
    codex-cli 0.0.0
    $ chutescoder --help
    Codex CLI
    Usage: codex [OPTIONS] [PROMPT]

'Codex' is OpenAI's mark, and Apache-2.0 section 6 grants no trademark
rights — so this is the part of the rebrand that is actually required, not
cosmetic. Fixed the clap about/usage strings, the three subcommand help
lines that named the upstream product, the shell-completion program name,
and the package name that drives --version.

The workspace dependency keeps the  alias pointing at the
renamed package so tui's  still compiles — renaming
the crate everywhere would collide with every upstream merge for no
user-visible gain, which is the rule the rest of the rebrand follows.

Author: Florian Standhartinger

codex-rs/Cargo.toml

@@ -164,7 +164,7 @@ codex-arg0 = { path = "arg0" }
 codex-async-utils = { path = "async-utils" }
 codex-backend-client = { path = "backend-client" }
 codex-chatgpt = { path = "chatgpt" }
-codex-cli = { path = "cli" }
+codex-cli = { package = "chutescoder-cli", path = "cli" }
 codex-client = { path = "codex-client" }
 codex-collaboration-mode-templates = { path = "collaboration-mode-templates" }
 codex-cloud-config = { path = "cloud-config" }

codex-rs/cli/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "codex-cli"
+name = "chutescoder-cli"
 version.workspace = true
 edition.workspace = true
 license.workspace = true

codex-rs/cli/src/main.rs

@@ -88,7 +88,10 @@ use codex_protocol::protocol::AskForApproval;
 use codex_protocol::user_input::UserInput;
 use codex_terminal_detection::TerminalName;
 
-/// Codex CLI
+/// chutescoder
+///
+/// A coding agent that treats its own context as a variable. Fork of OpenAI
+/// Codex; see CHANGES-FROM-UPSTREAM.md.
 ///
 /// If no subcommand is specified, options will be forwarded to the interactive CLI.
 #[derive(Debug, Parser)]
@@ -98,10 +101,10 @@ use codex_terminal_detection::TerminalName;
     // If a sub‑command is given, ignore requirements of the default args.
     subcommand_negates_reqs = true,
     // The executable is sometimes invoked via a platform‑specific name like
-    // `codex-x86_64-unknown-linux-musl`, but the help output should always use
-    // the generic `codex` command name that users run.
+    // `chutescoder-x86_64-unknown-linux-musl`, but the help output should always
+    // use the generic `chutescoder` command name that users run.
     bin_name = "chutescoder",
-    override_usage = "codex [OPTIONS] [PROMPT]\n       codex [OPTIONS] <COMMAND> [ARGS]"
+    override_usage = "chutescoder [OPTIONS] [PROMPT]\n       chutescoder [OPTIONS] <COMMAND> [ARGS]"
 )]
 struct MultitoolCli {
     /// Enable process-only PSP routing for first-party ChatGPT requests.
@@ -126,7 +129,7 @@ struct MultitoolCli {
 
 #[derive(Debug, clap::Subcommand)]
 enum Subcommand {
-    /// Run Codex non-interactively.
+    /// Run chutescoder non-interactively.
     #[clap(visible_alias = "e")]
     Exec(ExecCli),
 
@@ -139,10 +142,10 @@ enum Subcommand {
     /// Remove stored authentication credentials.
     Logout(LogoutCommand),
 
-    /// Manage external MCP servers for Codex.
+    /// Manage external MCP servers for chutescoder.
     Mcp(McpCli),
 
-    /// Manage Codex plugins.
+    /// Manage chutescoder plugins.
     Plugin(PluginCli),
 
     /// Start Codex as an MCP server (stdio).
@@ -2630,7 +2633,7 @@ fn merge_interactive_cli_flags(interactive: &mut TuiCli, subcommand_cli: TuiCli)
 
 fn print_completion(cmd: CompletionCommand) {
     let mut app = MultitoolCli::command();
-    let name = "codex";
+    let name = "chutescoder";
     generate(cmd.shell, &mut app, name, &mut std::io::stdout());
 }