Add BT1035 pairing and station presets (fw 0.7.0).

Expose discoverable mode and A2DP control over REST, add persisted
DAB/FM preset list with web UI, and document gaps in docs/TODO.md.

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

Software/main/hardware_bootstrap.cpp

@@ -124,4 +124,9 @@ core::CompanionChipStatus HardwareBootstrap::companionChipStatus() noexcept
     };
 }
 
+bt1035::Bt1035Driver& HardwareBootstrap::bt1035Driver()
+{
+    return gBt1035;
+}
+
 } // namespace hardware