fix: re-read config.yaml before each workflow run

_reload_config(): re-reads config.yaml and updates all UI selectors
(FSBL, BIT, ELF, BIN, FW BIN) and IP/xilinx_path fields with latest
values from file.

Called at the top of both _execute_step() and _run_all_steps(),
so changing config.yaml externally is picked up before every run.

src/gui/main_window.py

@@ -158,21 +158,46 @@ class MainWindow(ctk.CTk):
         if self._config_path:
             try:
                 self._config = Config.from_file(self._config_path)
-                # If loaded from default_config.yaml, set save path to config.yaml
                 if self._config_path.name == "default_config.yaml":
                     user_config_path = self._get_user_config_path()
                     self._config._config_path = user_config_path
             except Exception:
                 self._config = Config.from_default()
-                # Set save path to config.yaml for new configs
                 user_config_path = self._get_user_config_path()
                 self._config._config_path = user_config_path
         else:
             self._config = Config.from_default()
-            # Set save path to config.yaml for new configs
             user_config_path = self._get_user_config_path()
             self._config._config_path = user_config_path
 
+    def _reload_config(self) -> None:
+        """Re-read config.yaml and update UI selectors with latest paths."""
+        user_path = self._get_user_config_path()
+        if not user_path.exists():
+            return
+        try:
+            fresh = Config.from_file(user_path)
+            self._config = fresh
+            # Update UI selectors
+            for attr, selector in [
+                ("bootloader_bit_path", self._bit_selector),
+                ("bootloader_elf_path", self._elf_selector),
+                ("bootloader_bin_path", self._bootloader_bin_selector),
+                ("fsbl_elf_path", self._fsbl_selector),
+                ("firmware_bin_path", self._firmware_bin_selector),
+            ]:
+                val = getattr(fresh, attr, "")
+                if val:
+                    selector.set_path(str(fresh.resolve_path(val)))
+            # Update IP
+            if self._ip_string_var:
+                self._ip_string_var.set(fresh.zynq_ip)
+            # Update xilinx path
+            if hasattr(fresh, 'xilinx_path') and self._xilinx_path_var:
+                self._xilinx_path_var.set(fresh.xilinx_path)
+        except Exception:
+            pass  # Keep existing config on error
+
     def _sync_config_from_ui(self) -> None:
         """Read current UI values and update the Config object.
 
@@ -989,6 +1014,9 @@ class MainWindow(ctk.CTk):
         if index >= len(self._steps):
             return
 
+        # Always re-read config.yaml before running
+        self._reload_config()
+
         self._is_running = True
         self._run_btn.configure(state="disabled", text="Running...")
         self._progress.reset()
@@ -1022,6 +1050,9 @@ class MainWindow(ctk.CTk):
         if self._is_running:
             return
 
+        # Always re-read config.yaml before running
+        self._reload_config()
+
         self._is_running = True
         self._run_btn.configure(state="disabled", text="Running...")
         self._progress.reset()