Add interface modes: headless (default), TUI, and MCP server

Cargo.toml

@@ -23,6 +23,8 @@ openssl = { version = "0.10", features = ["vendored"] }
 ratatui = { version = "0.29", default-features = false, features = ["crossterm"] }
 regex = "1.11"
 reqwest = { version = "0.12.18", default-features = false }
+rmcp = { version = "2.2.0", features = ["server", "macros", "transport-io", "schemars"] }
+schemars = "1"
 serde = "1"
 serde_json = "1.0.82"
 serde_repr = "0.1"

crates/cli/Cargo.toml

@@ -40,6 +40,8 @@ open = { workspace = true }
 ratatui = { workspace = true }
 regex = { workspace = true }
 reqwest = { workspace = true, features = ["json", "rustls-tls-native-roots"] }
+rmcp = { workspace = true }
+schemars = { workspace = true }
 serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true }
 serde_repr = { workspace = true }

crates/cli/src/account/me/mod.rs

@@ -3,7 +3,10 @@ use crate::client;
 use crate::token::get_smb_token::get_smb_token;
 use crate::{
     cli::CommandResult,
-    ui::{fail_message, fail_symbol, me_view::show_user_tui, succeed_message, succeed_symbol},
+    interface::is_tui,
+    ui::{
+        fail_message, fail_symbol, me_view::show_user_tui, plain, succeed_message, succeed_symbol,
+    },
 };
 use anyhow::{anyhow, Result};
 use smbcloud_auth::me::me;
@@ -30,7 +33,11 @@ pub async fn process_me(env: Environment) -> Result<CommandResult> {
     match me(env, client(), &token).await {
         Ok(user) => {
             spinner.stop_and_persist(&succeed_symbol(), succeed_message("Loaded."));
-            show_user_tui(&user).map_err(|e| anyhow!(e))?;
+            if is_tui() {
+                show_user_tui(&user).map_err(|e| anyhow!(e))?;
+            } else {
+                plain::render_user(&user);
+            }
             Ok(CommandResult {
                 spinner: Spinner::new(
                     spinners::Spinners::SimpleDotsScrolling,

crates/cli/src/cli/mod.rs

@@ -34,6 +34,16 @@ pub struct Cli {
     #[arg(long, global = true, env = "SMB_CI")]
     pub ci: bool,
 
+    /// Full-screen TUI mode: render read commands in an interactive ratatui
+    /// view instead of plain text. Mutually exclusive with --mcp.
+    #[arg(long, global = true, conflicts_with = "mcp")]
+    pub tui: bool,
+
+    /// Run as an MCP (Model Context Protocol) server over stdio instead of a
+    /// one-shot command. Implies non-interactive; the subcommand is ignored.
+    #[arg(long, global = true)]
+    pub mcp: bool,
+
     #[command(subcommand)]
     pub command: Option<Commands>,
 }