update README: manual sync by default, not configurable, pruning detail

README.md

@@ -1,6 +1,6 @@
 # tinyweb-forum
 
-A decentralized link-sharing forum for [TinyWeb](https://git.derickphan.com/lichenblankie/tinyweb). Share URLs and discuss them with other TinyWeb instances over the Reticulum mesh.
+A decentralized link-sharing forum for [TinyWeb](https://git.derickphan.com/lichenblankie/tinyweb). Share URLs and discuss them with other TinyWeb instances over the Reticulum mesh. No accounts, no sign-up, no central server.
 
 ## Install
 
@@ -20,7 +20,9 @@ pip install -e .
 ## How it works
 
 - Each TinyWeb instance stores forum threads and posts in its own `forum.db`
-- Instances sync content with each other over RNS every 5 minutes
+- Instances auto-discover each other on the mesh via RNS announces — no manual setup
+- You click "sync now" to exchange content; auto-sync every 5 minutes is optional (toggle on moderation page)
+- At scale, sync uses epidemic gossip: each cycle picks 20 random peers instead of all peers, converging within ~O(log N) cycles
 - Authors are identified by a short pseudonymous hash (no names, no accounts)
 - No global server, no algorithms, no tracking
 
@@ -31,29 +33,32 @@ pip install -e .
 - **Upvotes** — toggle upvote/downvote, scores propagate via sync
 - **Edit** — edit your own threads (new version syncs to peers)
 - **Retract** — retract your own threads and posts (retraction signal gossips to peers)
+- **Peer discovery** — instances share known peers during sync, growing the network organically
 
 ## Moderation
 
 All moderation is local — you control your view:
 
 - **Block author** — `[block]` link on posts and thread meta hides all content from that identity across your instance
-- **Auto-block** — when 3+ of your peers have blocked the same identity, it's auto-blocked for you too (configurable threshold)
+- **Auto-block** — when 3+ of your peers have blocked the same identity, it's auto-blocked for you too (threshold is 3)
 - **Mute thread** — hide a thread from the listing
 - **Keyword filters** — hide threads matching keywords
 - **Instance sync** — choose which peers to sync with; unsync at any time
 
 ## Sync
 
-- Forum instances auto-discover each other via RNS announces
+- Instances auto-discover each other via RNS announces — just run the forum and any other forum on the mesh finds you
-- Content is exchanged as JSON over RNS links every 5 minutes
+- Content is exchanged as JSON over RNS links
-- Peer discovery propagates through gossip — each instance shares its known peers
+- **Manual by default** — click "sync now" on the forum listing or moderation page
-- At scale (>20 peers), sync uses random gossip: each cycle picks 20 random peers instead of all peers
+- Auto-sync every 5 minutes can be enabled on the moderation page
-- This ensures content converges epidemically regardless of network size (content reaches all nodes within ~O(log N) cycles)
+- Auto-discovery can also be disabled on the moderation page (manual instance add only)
+- Peer discovery propagates through gossip — each instance shares its known peers during sync
 - Block lists and retractions are gossiped alongside content
 - Only new/updated content is transferred (timestamp-based)
-- Auto-discovery can be disabled in the moderation page
+- When >20 peers, each cycle syncs with a random 20 — content converges epidemically
 
 ## Storage
 
-- Threads are pruned after 30 days by default (configurable in moderation page)
+- Threads older than 30 days are auto-pruned (configurable on the moderation page)
 - Set retention to 0 to keep everything indefinitely
+- Forum DB is stored at `~/.tinyweb/forum.db`