fix(cli): forward --yolo to TUI binary via DEEPSEEK_YOLO env

The CLI dispatcher accepted --yolo but only passed it to Exec(TuiPassthroughArgs),
not to the plain Run(RunArgs) path used for interactive sessions.

Fix: pass DEEPSEEK_YOLO=true env var to the TUI binary. The TUI already
reads this env var (matching DEEPSEEK_SANDBOX_MODE pattern) and sets
allow_shell + start_in_agent_mode + yolo.

Also adds yolo field to CliRuntimeOverrides and ResolvedRuntimeOptions
so the flag propagates through the full resolve chain.

crates/cli/src/lib.rs

@@ -92,6 +92,9 @@ struct Cli {
     no_mouse_capture: bool,
     #[arg(long = "skip-onboarding")]
     skip_onboarding: bool,
+    /// YOLO mode: auto-approve all tools
+    #[arg(long)]
+    yolo: bool,
     #[arg(short = 'p', long = "prompt", value_name = "PROMPT")]
     prompt_flag: Option<String>,
     #[arg(
@@ -425,6 +428,7 @@ fn run() -> Result<()> {
         telemetry: cli.telemetry,
         approval_policy: cli.approval_policy.clone(),
         sandbox_mode: cli.sandbox_mode.clone(),
+        yolo: Some(cli.yolo),
     };
     let command = cli.command.take();
 
@@ -1441,6 +1445,9 @@ fn build_tui_command(
     if let Some(mode) = cli.sandbox_mode.as_ref() {
         cmd.env("DEEPSEEK_SANDBOX_MODE", mode);
     }
+    if cli.yolo {
+        cmd.env("DEEPSEEK_YOLO", "true");
+    }
     if let Some(api_key) = cli.api_key.as_ref() {
         cmd.env("DEEPSEEK_API_KEY", api_key);
         if resolved_runtime.provider == ProviderKind::Openai {