bxctl memory sync: the Honcho ledger's counts and failed items

Co-Authored-By: ornith-1.5-35b-a3b <agent@wntrmute.dev>

crates/memoryd/src/honcho/report.rs

@@ -0,0 +1,33 @@
+//! What `bxctl memory sync` prints (M5c spec, section 5): how many items the ledger holds in each
+//! state, and every failed item, oldest first, by its label, never by its text.
+
+use crate::honcho::ledger::{Ledger, label};
+
+/// The answer without `[honcho]`: not an error.
+pub const NOT_CONFIGURED: &str = "honcho sync: not configured (memoryd.toml has no [honcho])";
+
+/// The report of `ledger`: one line of counts, then, when any item failed, a heading and one line
+/// per failed item: its time, its label, its kind, and its HTTP status when it had one.
+pub fn report(ledger: &Ledger) -> String {
+    let c = ledger.counts();
+    let mut out = format!(
+        "honcho sync: {} decided: {} sent, {} waiting, {} failed, {} skipped",
+        c.decided, c.sent, c.waiting, c.failed, c.skipped
+    );
+    let failures = ledger.failures();
+    if !failures.is_empty() {
+        out.push_str("\nfailed, oldest first:");
+        for f in failures {
+            out.push_str(&format!(
+                "\n  {}  {}  {}",
+                f.time.to_rfc3339(),
+                label(&f.item),
+                f.kind
+            ));
+            if let Some(status) = f.status {
+                out.push_str(&format!(" (HTTP {status})"));
+            }
+        }
+    }
+    out
+}