Update product backlog

product-backlog.md

@@ -1,43 +1,60 @@
  "platforms" theme
   * desktop
   * ios
-  *  chrome os
-  * extending headless app
-  * remaining viable on android
+  * chrome os
+  * extend headless app
+  * remain viable on android (wake locks, foreground services, etc)
 
 
 "feature parity" theme
 
+  * delete private messages
   * self-destructing messages
-  * avatars (#407)
-  *  audio messages
+  * avatars
+  * audio messages
   * multi-device support (equal peers or leader-follower)
-  * backups and account transfers (#110)
-  * improve threading ui
+  * account backups
+  * account transfers
+  * improve ui for threaded conversations
 
 
 "offline" theme
 
-  * improve offline communication (e.g. BLE, WifIDirect)
-  * fix bluetooth on android (connection limits, not knowing our own address)
-  * Better UX for controlling data transports
-  * reduce local/nearby metadata leakage
-  * store and forward messages when user is offline (mailbox)
-  * Testing under (simulated) blackout conditions
+  * improve ui for controlling data transports
+  * improve reliability of bluetooth and wifi transports
+  * reduce nearby metadata leakage by using ble and wifi direct discovery
+  * improve ui and protocol for adding contacts in person
+  * test under simulated blackout conditions
+  * investigate medium-range transports (e.g. LoRa, AFSK over handheld radios)
+  * investigate long-range simplex transports (e.g. satellite, AFSK over AM/FM broadcast)
+
+
+"mailbox" theme
+
+  * architecture and features to be decided
+
 
 "performance" theme
 
   * reduce battery consumption (partner: tor)
-  * reduce bandwidth consumption and traffic (partner: tor)
-  * scalability to bramble groups with many messages (1000s)
-  * reduce database load times
+  * reduce bandwidth consumption (partner: tor)
+  * improve database performance
+  * migrate to native crypto (libsodium)
+  * scale to bramble groups with thousands of messages
 
 
 "social" theme
 
   * forum moderation
-  * editing or deleting forum and blog posts after they've been shared
-  * making private groups more flexible (e.g. allowing ownership to be transferred, allowing multiple moderators per group)
-  * improve workflow for adding contacts in person
-  * verify contacts
+  * edit or delete own posts in private groups, forums and blogs
+  * make private groups more flexible (e.g. transfer ownership, multiple moderators per group)
+  * verify identities of contacts when meeting in person
   * image attachments for forums, blogs and private groups
+
+
+"mesh" theme (speculative)
+
+  * protocols for advertising, discovering nearby peers
+  * protocol for syncing with ephemeral peers
+  * sync encrypted bramble messages via mesh (unicast and multicast)
+  * proof of concept mesh chatroom app