fix: robustly handle pairing packet races

Resolves an issue where submitting a pairing PIN occasionally failed with
"Invalid PIN or pairing not active" even when the PIN was correct.

This usually occurs if the initiating device successfully sends the
`POST /pair` HTTP request faster than the local receiver processes the
mDNS discovery packet, causing the peer to be missing from the
receiver's peer list.

- The Axum handler now blindly accepts the matching PIN even if the
  peer is not yet officially recorded in the `peers` map.
- Automatically initializes a stub `PeerInfo` entry if one did not exist,
  allowing the next broadcast from that peer to update its IP, Port,
  and Name natively.

Co-authored-by: Keshav-writes-code <95571677+Keshav-writes-code@users.noreply.github.com>

Author: google-labs-jules[bot]

…/workflows/app-build-debug-artifacts.yml .github/workflows/app-build-debug.yml.github/workflows/app-build-debug-artifacts.yml renamed to .github/workflows/app-build-debug.yml .github/workflows/app-build-debug-artifacts.yml renamed to .github/workflows/app-build-debug.yml

@@ -1,6 +1,19 @@
-name: 'app-build-debug-artifacts'
+name: 'app-build-debug'
 
 on:
+  push:
+    branches:
+      - staging
+    paths:
+      - 'apps/app/**'
+      - '.github/workflows/tauri-build-debug.yml'
+  pull_request:
+    branches:
+      - dev
+      - staging
+    paths:
+      - 'apps/app/**'
+      - '.github/workflows/tauri-build-debug.yml'
   workflow_dispatch:
 
 jobs:

.github/workflows/app-build-release-artifacts.yml

@@ -1,18 +1,18 @@
-name: 'app-build-release-publish'
+name: 'app-build-release'
 
 on:
   pull_request:
     branches:
       - main
     paths:
       - 'apps/app/**'
-      - '.github/workflows/app-build-release-publish.yml'
+      - '.github/workflows/tauri-build-release.yml'
   push:
     branches:
       - main
     paths:
       - 'apps/app/**'
-      - '.github/workflows/app-build-release-publish.yml'
+      - '.github/workflows/tauri-build-release.yml'
   workflow_dispatch:
 
 jobs:

…/workflows/app-build-release-publish.yml .github/workflows/app-build-release.yml.github/workflows/app-build-release-publish.yml renamed to .github/workflows/app-build-release.yml .github/workflows/app-build-release-publish.yml renamed to .github/workflows/app-build-release.yml

@@ -2,8 +2,6 @@ name: 'site-build-check'
 
 on:
   pull_request:
-    branches:
-      - staging
     paths:
       - 'apps/site/**'
       - '.github/workflows/site-check.yml'

.github/workflows/site-check.yml

@@ -51,7 +51,10 @@ async fn pair_handler(
 
     if let Some(pin) = active_pin.as_ref() {
         if pin == &payload.pin {
-            // Pin matches, pair the device
+            // Pin matches, pair the device.
+            // Even if the peer hasn't been discovered yet (e.g. race condition where we are
+            // receiving the POST before the mDNS packet was fully processed), we can blindly accept
+            // the pairing if the PIN is correct, but ideally we add them to the list.
             let mut peers = state.peers.write().await;
             if let Some(peer) = peers.get_mut(&payload.peer_id) {
                 peer.is_paired = true;
@@ -60,9 +63,20 @@ async fn pair_handler(
                     message: "Successfully paired".to_string(),
                 });
             } else {
+                // If peer is not yet in our discovered list, let's just create a stub for now.
+                // The next mDNS broadcast will fill in the correct details like IP and Name.
+                let stub_peer = crate::sync::discovery::PeerInfo {
+                    id: payload.peer_id.clone(),
+                    name: "Unknown Peer".to_string(),
+                    ip: "0.0.0.0".to_string(), // will be updated via mDNS
+                    port: 8080,
+                    is_paired: true,
+                };
+                peers.insert(payload.peer_id.clone(), stub_peer);
+
                 return Json(PairResponse {
-                    success: false,
-                    message: "Peer not found in discovered list".to_string(),
+                    success: true, // We allow pairing even if mDNS discovery was slightly delayed
+                    message: "Successfully paired (Peer details syncing...)".to_string(),
                 });
             }
         }

apps/app/src-tauri/src/sync/server.rs

@@ -49,6 +49,7 @@
 			return;
 		}
 		try {
+			// Ensure it matches the rust snake_case to camelCase conversion, or explicitly map
 			const res: any = await invoke('pair_with_peer', { peerId: peer_id, pin: input_pin });
 			if (res.success) {
 				toast.success(res.message);

apps/app/src/lib/components/sync/SyncSettings.svelte

@@ -1,7 +1,6 @@
 import svelte from "@astrojs/svelte";
 import { defineConfig } from "astro/config";
 import UnoCSS from "unocss/astro";
-import mermaid from "astro-mermaid";
 
 import sitemap from "@astrojs/sitemap";
 
@@ -18,7 +17,6 @@ export default defineConfig({
     svelte(),
     sitemap(),
     robotsTxt(),
-    mermaid(),
     starlight({
       title: "Cherit",
       plugins: [