ci-log: graceful message when a run's logs are gc'd (404/500) instead of raw http error

hive-forge/src/verbs/ci_log.rs

@@ -73,7 +73,20 @@ pub fn run(client: &Client, args: Args) -> Result<()> {
     let path = format!("/{repo}/actions/runs/{}/jobs/{}", args.run, args.job);
 
     // 1. Discover the job's steps (state is returned regardless of cursors).
-    let view = client.post_json_web(&path, &json!({ "logCursors": [] }))?;
+    // A 404 (run/job gone) or 500 ("task ... resource does not exist", which
+    // the forge returns once act_runner has pruned a completed run's task
+    // record) surfaces here as an Err — translate it into the same
+    // logs-unavailable guidance rather than leaking the raw HTTP error.
+    let view = match client.post_json_web(&path, &json!({ "logCursors": [] })) {
+        Ok(v) => v,
+        Err(e) => bail!(
+            "run #{} job {} unavailable — the run/job may not exist, or its logs were \
+             garbage-collected (act_runner prunes completed-run task records; ci-log \
+             is reliable on live + recently-finished runs). Underlying: {e}",
+            args.run,
+            args.job
+        ),
+    };
     let steps = steps_of(&view);
     if steps.is_empty() {
         bail!(