Add a library target so hosts can embed the agent

Cargo.toml

@@ -6,11 +6,27 @@ license = "Apache-2.0"
 description = "Music-domain ACP agent: theory, production, industry, culture and live shows, backed by any OpenAI-compatible chat completions API"
 repository = "https://github.com/splitfireai/splitfire-agent"
 
+[features]
+default = ["cli"]
+# The `splitfire-agent` binary: its terminal UI, plus the MCP stub the integration tests run.
+# A host embedding the library turns this off.
+cli = ["dep:ed-acp-tui", "ed-mcp/test-server"]
+
+[[bin]]
+name = "splitfire-agent"
+path = "src/main.rs"
+required-features = ["cli"]
+
+[[bin]]
+name = "mcp_stdio_stub"
+path = "src/bin/mcp_stdio_stub.rs"
+required-features = ["cli"]
+
 [dependencies]
 # Onde Agent Platform: the ACP server, terminal UI and MCP layer, from the onde-ed workspace.
 ed-acp = { version = "1.1.0" }
-ed-acp-tui = { version = "1.1.0" }
-ed-mcp = { version = "1.1.0", features = ["test-server"] }
+ed-acp-tui = { version = "1.1.0", optional = true }
+ed-mcp = { version = "1.1.0" }
 agent-client-protocol = "2.2"
 anyhow = "1.0.104"
 async-trait = "0.1"

src/lib.rs

@@ -0,0 +1,15 @@
+//! SplitFire as a library: the music agent's [`Profile`](ed_acp::Profile), for hosts that
+//! embed it instead of launching the `splitfire-agent` binary.
+//!
+//! A host serves [`SplitFire`] with `ed_acp::serve` over an in-memory channel and runs an ACP
+//! client on the other end, which keeps the agent inside an app sandbox that can't spawn it as
+//! a subprocess. Build with `default-features = false` to leave out the terminal UI.
+
+mod audio;
+pub mod profile;
+mod prompt;
+mod theory;
+mod tools;
+
+pub use ed_acp;
+pub use profile::{DEMUCS, INFO, SplitFire};

src/main.rs

@@ -7,20 +7,14 @@
 //! it speaks ACP over stdio. Set ONDE_API_KEY (`app-id:app-secret`) or run `--setup`.
 //! SPLITFIRE_YOLO=1 skips permission prompts. Logs go to stderr (RUST_LOG).
 
-mod audio;
-mod profile;
-mod prompt;
-mod theory;
-mod tools;
-
 use std::io::IsTerminal;
 use std::path::PathBuf;
 use std::sync::Arc;
 
 use ed_acp::{LlmConfig, ServeOptions, cli};
 use ed_acp_tui::TuiConfig;
 
-use profile::{INFO, SplitFire};
+use splitfire_agent::{INFO, SplitFire};
 
 const USAGE: &str = "\
 Usage: splitfire-agent [--acp] [--yolo] [--list-models] [--root <path>...] [--setup] [--version]