Implement MCP automation and approvals.

crates/bds-mcp/tests/process.rs

@@ -0,0 +1,38 @@
+use std::io::Write as _;
+use std::process::{Command, Stdio};
+
+#[test]
+fn stdio_process_initializes_lists_capabilities_and_reports_parse_errors() {
+    let home = tempfile::tempdir().unwrap();
+    let mut child = Command::new(env!("CARGO_BIN_EXE_bds-mcp"))
+        .env("HOME", home.path())
+        .env("XDG_DATA_HOME", home.path().join("data"))
+        .stdin(Stdio::piped())
+        .stdout(Stdio::piped())
+        .stderr(Stdio::piped())
+        .spawn()
+        .unwrap();
+    let stdin = child.stdin.as_mut().unwrap();
+    writeln!(stdin, r#"{{"jsonrpc":"2.0","id":1,"method":"initialize","params":{{"protocolVersion":"2025-06-18"}}}}"#).unwrap();
+    writeln!(stdin, r#"{{"jsonrpc":"2.0","id":2,"method":"tools/list"}}"#).unwrap();
+    writeln!(stdin, "not-json").unwrap();
+    drop(child.stdin.take());
+    let output = child.wait_with_output().unwrap();
+    assert!(
+        output.status.success(),
+        "{}",
+        String::from_utf8_lossy(&output.stderr)
+    );
+    let lines = String::from_utf8(output.stdout).unwrap();
+    let responses = lines
+        .lines()
+        .map(|line| serde_json::from_str::<serde_json::Value>(line).unwrap())
+        .collect::<Vec<_>>();
+    assert_eq!(responses.len(), 3);
+    assert_eq!(responses[0]["result"]["protocolVersion"], "2025-06-18");
+    assert_eq!(
+        responses[1]["result"]["tools"].as_array().unwrap().len(),
+        12
+    );
+    assert_eq!(responses[2]["error"]["code"], -32700);
+}