Format apt updates as old -> new

services/updates.py

@@ -22,7 +22,29 @@ async def list_updates() -> str:
     if pm == "apt":
         await run_cmd(["sudo", "apt", "update"], timeout=300)
         rc, out = await run_cmd(["apt", "list", "--upgradable"], timeout=120)
-        return f"📦 Updates (apt)\n```{out}```" if rc == 0 else f"❌ apt list failed\n```{out}```"
+        if rc != 0:
+            return f"❌ apt list failed\n```{out}```"
+
+        lines = []
+        for line in out.splitlines():
+            if not line or line.startswith("Listing..."):
+                continue
+            # Format: name/version ... [upgradable from: old]
+            name_ver = line.split(" ", 1)[0]
+            if "/" not in name_ver:
+                continue
+            name, new_ver = name_ver.split("/", 1)
+            old_ver = None
+            marker = "upgradable from: "
+            if marker in line:
+                old_ver = line.split(marker, 1)[1].rstrip("]").strip()
+            if old_ver:
+                lines.append(f"{name}: {old_ver} -> {new_ver}")
+            else:
+                lines.append(f"{name}: -> {new_ver}")
+
+        body = "\n".join(lines) if lines else "No updates"
+        return f"📦 Updates (apt)\n```{body}```"
 
     if pm == "dnf":
         rc, out = await run_cmd(["sudo", "dnf", "check-update"], timeout=300)