make writing safe (by using a tmp file and moving to actual location)

external/solanaceae_contact

@@ -1 +1 @@
-Subproject commit 6f3f9ef1911ce8189609ba9d6c7a5931ab1efc69
+Subproject commit e40271670b4df96a8d02f32a1ba61a838419db48

src/fragment_store/message_fragment_store.cpp

@@ -105,8 +105,8 @@ void MessageFragmentStore::handleMessage(const Message3Handle& m) {
 		if (fragment_uid.empty()) {
 			for (auto& [ts_begin, ts_end, fid] : fuid_open) {
 				const int64_t frag_range = int64_t(ts_end) - int64_t(ts_begin);
-				//constexpr static int64_t max_frag_ts_extent {1000*60*60};
-				constexpr static int64_t max_frag_ts_extent {1000*60*3}; // 3min for testing
+				constexpr static int64_t max_frag_ts_extent {1000*60*60};
+				//constexpr static int64_t max_frag_ts_extent {1000*60*3}; // 3min for testing
 				const int64_t possible_extention = max_frag_ts_extent - frag_range;
 
 				// which direction

src/fragment_store/message_fragment_store.hpp

@@ -36,6 +36,9 @@ namespace Fragment::Components {
 	struct MessagesContact {
 		std::vector<uint8_t> id;
 	};
+
+	// TODO: add src contact (self id)
+
 } // Fragment::Components
 
 // handles fragments for messages