SDK sausage-actor; examples and agent on the SDK; agent without limits

- sausage-actor: Message, messages(), send/reply/publish, async Inbox
- agent: append-only /data/history.jsonl, no caps on history, steps, waits,
  tool output, or reads; max_tokens only when configured (Anthropic: 32000)

examples/ticker/Cargo.toml

@@ -4,4 +4,6 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-serde_json = "1"
+sausage-actor = { version = "0.1", path = "../../sdk" }
+
+[workspace]

examples/ticker/src/main.rs

@@ -1,16 +1,13 @@
-//! Sends {"type":"add","text":"tick N"} to `notes` every 50 ms, N = 1..=200.
-//! Does not read stdin, so the broker kills it at shutdown; that is fine.
-use std::io::Write;
+//! Send 200 notes to `notes`, 50 ms apart, then stay alive.
+use sausage_actor::{json, send};
+use std::time::Duration;
+
 fn main() {
-    let mut out = std::io::stdout().lock();
     for n in 1..=200 {
-        let msg = serde_json::json!({"to": "notes", "body": {"type": "add", "text": format!("tick {n}")}});
-        writeln!(out, "{msg}").unwrap();
-        out.flush().unwrap();
-        std::thread::sleep(std::time::Duration::from_millis(50));
+        let _ = send("notes", json!({"type": "add", "text": format!("tick {n}")}));
+        std::thread::sleep(Duration::from_millis(50));
     }
-    // Stay alive without doing anything.
     loop {
-        std::thread::sleep(std::time::Duration::from_secs(3600));
+        std::thread::sleep(Duration::from_secs(3600));
     }
 }