ItsGoin v0.3.2 — Decentralized social media network

No central server, user-owned data, reverse-chronological feed.
Rust core + Tauri desktop + Android app + plain HTML/CSS/JS frontend.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

crates/core/src/activity.rs

@@ -0,0 +1,73 @@
+use std::collections::VecDeque;
+
+use serde::Serialize;
+
+const MAX_EVENTS: usize = 200;
+
+#[derive(Debug, Clone, Copy, Serialize, PartialEq, Eq)]
+#[serde(rename_all = "lowercase")]
+pub enum ActivityLevel {
+    Info,
+    Warn,
+    Error,
+}
+
+#[derive(Debug, Clone, Copy, Serialize, PartialEq, Eq)]
+#[serde(rename_all = "lowercase")]
+pub enum ActivityCategory {
+    Growth,
+    Rebalance,
+    Recovery,
+    Anchor,
+    Connection,
+    Relay,
+}
+
+#[derive(Debug, Clone, Serialize)]
+pub struct ActivityEvent {
+    pub timestamp_ms: u64,
+    pub level: ActivityLevel,
+    pub category: ActivityCategory,
+    pub message: String,
+    pub peer_id: Option<[u8; 32]>,
+}
+
+pub struct ActivityLog {
+    events: VecDeque<ActivityEvent>,
+}
+
+impl ActivityLog {
+    pub fn new() -> Self {
+        Self {
+            events: VecDeque::with_capacity(MAX_EVENTS),
+        }
+    }
+
+    pub fn log(
+        &mut self,
+        level: ActivityLevel,
+        cat: ActivityCategory,
+        msg: String,
+        peer: Option<[u8; 32]>,
+    ) {
+        let now = std::time::SystemTime::now()
+            .duration_since(std::time::UNIX_EPOCH)
+            .unwrap_or_default()
+            .as_millis() as u64;
+        if self.events.len() >= MAX_EVENTS {
+            self.events.pop_front();
+        }
+        self.events.push_back(ActivityEvent {
+            timestamp_ms: now,
+            level,
+            category: cat,
+            message: msg,
+            peer_id: peer,
+        });
+    }
+
+    pub fn recent(&self, limit: usize) -> Vec<ActivityEvent> {
+        let start = self.events.len().saturating_sub(limit);
+        self.events.iter().skip(start).cloned().collect()
+    }
+}