From 14274856a388b1b23ad7bbd97e5139d7add6ce5b Mon Sep 17 00:00:00 2001
From: Breadway <plasticbread849@gmail.com>
Date: Wed, 5 Aug 2026 19:14:58 +0800
Subject: [PATCH] daemon: preserve full anyhow context chain in IPC error
 replies

e.to_string() on an anyhow::Error only prints the outermost .context()
message; the underlying cause (why connect_app/build_pipeline/etc.
actually failed) was being silently dropped before it ever reached the
GUI or bread event log. Use "{e:#}" instead.
---
 breadcastd/src/daemon.rs | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/breadcastd/src/daemon.rs b/breadcastd/src/daemon.rs
index dbb3f21..1a09b64 100644
--- a/breadcastd/src/daemon.rs
+++ b/breadcastd/src/daemon.rs
@@ -163,8 +163,11 @@ impl Daemon {
                     let _ = reply.send(Ok(()));
                 }
                 Err(e) => {
-                    bread_events::emit_mirroring_failed(&self.bread_client, &device.id, &e.to_string());
-                    let _ = reply.send(Err(e.to_string()));
+                    // `{e:#}` (not `{e}`/`to_string()`) so the full anyhow
+                    // context chain reaches the caller/GUI instead of just
+                    // the outermost ".context()" message.
+                    bread_events::emit_mirroring_failed(&self.bread_client, &device.id, &format!("{e:#}"));
+                    let _ = reply.send(Err(format!("{e:#}")));
                 }
             }
             return;
@@ -184,8 +187,8 @@ impl Daemon {
                     let _ = reply.send(Ok(()));
                 }
                 Err(e) => {
-                    bread_events::emit_mirroring_failed(&self.bread_client, &device.url, &e.to_string());
-                    let _ = reply.send(Err(e.to_string()));
+                    bread_events::emit_mirroring_failed(&self.bread_client, &device.url, &format!("{e:#}"));
+                    let _ = reply.send(Err(format!("{e:#}")));
                 }
             }
             return;