Initial commit: Emby TUI client with libmpv playback

A ratatui-based terminal browser for an Emby server with mpv as the player
backend. Authenticates via /Users/AuthenticateByName, lists libraries and
items, streams via /Videos/{id}/stream, and reports playback progress so
"Continue Watching" stays in sync across clients.

Credentials are read in priority order: CLI flags, env vars
(EMBY_SERVER/EMBY_USER/EMBY_PASSWORD), ./config.toml or
$XDG_CONFIG_HOME/emby-client/config.toml, then an in-TUI login prompt with
an option to persist to config.toml.

Modules: config (CLI + TOML loader), login (TUI prompt), emby (HTTP client
+ progress Reporter), player (libmpv2 wrapper, blocks until file ends),
app (browse state, Continue Watching virtual entry), ui (ratatui frontend).

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>

src/main.rs

@@ -0,0 +1,28 @@
+mod app;
+mod config;
+mod emby;
+mod login;
+mod player;
+mod ui;
+
+use anyhow::Result;
+use clap::Parser;
+
+#[tokio::main]
+async fn main() -> Result<()> {
+    let args = config::CliArgs::parse();
+    let (cfg, save_target) = config::load(&args)?;
+
+    let cfg = match cfg {
+        Some(c) => c,
+        None => {
+            // Interactive credential prompt in the TUI
+            login::prompt(save_target.as_deref())?
+        }
+    };
+
+    let client = emby::Client::new(&cfg).await?;
+    let mut app = app::App::new(client).await?;
+    ui::run(&mut app).await?;
+    Ok(())
+}