feat: import Chinese-localized Buzz source snapshot

Signed-off-by: cls_宁波本机 <908705107@qq.com>

crates/sprig/Cargo.toml

@@ -0,0 +1,19 @@
+[package]
+name = "sprig"
+# Independent version: sprig ships as a pinnable artifact (sprig-v* tags),
+# released on its own cadence. It does NOT inherit the workspace version.
+version = "0.1.0"
+edition.workspace = true
+rust-version.workspace = true
+license.workspace = true
+repository.workspace = true
+description = "All-in-one Buzz ACP harness, agent, and developer MCP"
+
+[[bin]]
+name = "sprig"
+path = "src/main.rs"
+
+[dependencies]
+buzz-acp = { path = "../buzz-acp" }
+buzz-agent = { path = "../buzz-agent" }
+buzz-dev-mcp = { path = "../buzz-dev-mcp" }

crates/sprig/src/main.rs

@@ -0,0 +1,53 @@
+fn main() {
+    if let Err(e) = dispatch() {
+        eprintln!("{e}");
+        std::process::exit(1);
+    }
+}
+
+fn dispatch() -> Result<(), String> {
+    let argv0 = std::env::args().next().unwrap_or_default();
+    let cmd = std::path::Path::new(&argv0)
+        .file_name()
+        .and_then(|n| n.to_str())
+        .unwrap_or("")
+        .to_ascii_lowercase();
+
+    match cmd.as_str() {
+        "buzz-acp" => buzz_acp::run().map_err(|e| e.to_string()),
+        "buzz-agent" => buzz_agent::run().map_err(|e| e.to_string()),
+        "sprig" => match std::env::args().nth(1).as_deref() {
+            Some("-V") | Some("--version") => {
+                println!("sprig {}", env!("CARGO_PKG_VERSION"));
+                Ok(())
+            }
+            Some("-h") | Some("--help") | None => {
+                print_usage();
+                if std::env::args().len() <= 1 {
+                    Err("error: invoke Sprig via a personality symlink".into())
+                } else {
+                    Ok(())
+                }
+            }
+            Some(other) => {
+                print_usage();
+                Err(format!(
+                    "error: unknown Sprig option or personality: {other}"
+                ))
+            }
+        },
+        // buzz-dev-mcp also handles its own multicall names: rg, tree,
+        // buzz, git-credential-nostr, and git-sign-nostr.
+        _ => buzz_dev_mcp::run().map_err(|e| e.to_string()),
+    }
+}
+
+fn print_usage() {
+    println!(
+        "Sprig — all-in-one Buzz ACP harness, agent, and developer MCP\n\n\
+Sprig is a multicall binary. Invoke it through one of the personality names:\n\n\
+  buzz-acp       ACP harness\n  buzz-agent     ACP-compliant agent\n  buzz-dev-mcp   Developer MCP server\n\n\
+Developer MCP helper names are also supported: rg, tree, buzz, git-credential-nostr, git-sign-nostr.\n\n\
+Installers can create links with:\n  ln -s sprig buzz-acp\n  ln -s sprig buzz-agent\n  ln -s sprig buzz-dev-mcp"
+    );
+}