chore(tauri): enable devtools in dev builds only

Removes the explicit "devtools": false from tauri.conf.json so the Tauri
default applies (true in debug, false in release). Auto-opens the inspector
in the setup hook under #[cfg(debug_assertions)] so contributors get DevTools
on `npm run tauri:dev` without right-clicking.

`cargo check --release` confirms the open_devtools() call is hard-stripped
from production binaries — the symbol does not exist in the release build.

Helps debug WebView-side issues (CORS, TLS, axios responses) that the
Rust-only logging mode does not capture.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src-tauri/src/lib.rs

@@ -3621,6 +3621,14 @@ pub fn run() {
                 }
             }
 
+            #[cfg(debug_assertions)]
+            {
+                use tauri::Manager;
+                if let Some(win) = app.get_webview_window("main") {
+                    win.open_devtools();
+                }
+            }
+
             // ── System tray ───────────────────────────────────────────────
             // Always build on startup when possible; the frontend calls toggle_tray_icon(false)
             // immediately after load if the user has disabled the tray icon.

src-tauri/tauri.conf.json

@@ -23,8 +23,7 @@
         "decorations": true,
         "transparent": false,
         "visible": true,
-        "dragDropEnabled": false,
-        "devtools": false
+        "dragDropEnabled": false
       }
     ],
     "security": {