Release fw 0.8.4: doc sync, System UI, BT/FM polish.

Align README, manual, and backlog to 0.8.4; add Web UI System tab for OTA/DSP uploads, serial in health header, FM seek down, and BT1035 paired list plus auto-reconnect API.

Co-authored-by: Cursor <cursoragent@cursor.com>

Software/components/services/bluetooth/include/bluetooth/BluetoothService.hpp

@@ -17,6 +17,7 @@
 #include "core/BluetoothJson.hpp"
 
 #include <expected>
+#include <vector>
 
 namespace bluetooth {
 
@@ -94,6 +95,34 @@ public:
      */
     [[nodiscard]] std::expected<void, bt1035::Bt1035Error> disconnect();
 
+    /**
+     * @brief    listPaired — read paired remotes from the module.
+     *
+     * @dname    listPaired
+     * @return   Device list on success, or Bt1035Error.
+     * @pubstate queries AT+PLIST via the driver.
+     *
+     * @author   Michele Bigi
+     * @date     2026-07-07
+     */
+    [[nodiscard]] std::expected<std::vector<core::Bt1035PairedDevice>,
+                                 bt1035::Bt1035Error>
+    listPaired();
+
+    /**
+     * @brief    setAutoReconnect — configure power-on reconnect attempts.
+     *
+     * @dname    setAutoReconnect
+     * @param    times  0 off, 1–15 per Feasycom manual.
+     * @return   Ok on success, or Bt1035Error.
+     * @pubstate writes AT+AUTOCONN via the driver.
+     *
+     * @author   Michele Bigi
+     * @date     2026-07-07
+     */
+    [[nodiscard]] std::expected<void, bt1035::Bt1035Error> setAutoReconnect(
+        std::uint8_t times);
+
 private:
     bt1035::Bt1035Driver& driver_;
     bool pairingActive_;