One binary: the lint and the trainer are commands of portal

portal serve runs a site; portal lint is what iris was; portal plan,
build, report and the rest are what portal-trainer was. One source at
one version, so the three never disagree about what content means.
Both histories are merged in (subtree). The release attaches the bare
binary for a content repo's CI. The trainer's plans, intakes, engines
and reference prompt come along; its runs stay in the old repo.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GT37Z1Xtfd9pUuQtMTg6Yt

src/main.rs

@@ -1,6 +1,31 @@
+/// One binary, three jobs: `portal` (or `portal serve`) runs a site;
+/// `portal lint` checks a content repo the way the site reads it;
+/// `portal plan`, `build`, `report` and the rest train one. The lint
+/// and the trainer are the same code as the server, at the same
+/// version, so they never disagree about what content means.
 #[cfg(feature = "ssr")]
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
+    let argv: Vec<String> = std::env::args().skip(1).collect();
+    match argv.first().map(String::as_str) {
+        Some("lint") => return portal::lint::run(argv[1..].to_vec()).await,
+        Some("plan" | "build" | "answer" | "rate" | "prefer" | "score" | "simulate" | "compare" | "report" | "generate") => {
+            // The trainer runs models through shell commands and waits
+            // on them; off the runtime's threads, as a CLI should.
+            return tokio::task::spawn_blocking(move || portal::trainer::run(argv)).await?;
+        }
+        Some("--version" | "-V") => {
+            println!("portal v{}", env!("CARGO_PKG_VERSION"));
+            return Ok(());
+        }
+        Some("serve") | None => {}
+        Some(other) => anyhow::bail!("portal: unknown command {other:?}; one of serve, lint, plan, build, answer, rate, prefer, score, simulate, compare, report, generate"),
+    }
+    serve().await
+}
+
+#[cfg(feature = "ssr")]
+async fn serve() -> anyhow::Result<()> {
     use axum::{body::Body, extract::State, http::Request, response::IntoResponse, routing::{any, get, post}, Router};
     use leptos::prelude::*;
     use leptos_axum::{generate_route_list, LeptosRoutes};