feat: initial release — ZeroClaw v0.1.0

- 22 AI providers (OpenRouter, Anthropic, OpenAI, Mistral, etc.)
- 7 channels (CLI, Telegram, Discord, Slack, iMessage, Matrix, Webhook)
- 5-step onboarding wizard with Project Context personalization
- OpenClaw-aligned system prompt (SOUL.md, IDENTITY.md, USER.md, AGENTS.md, etc.)
- SQLite memory backend with auto-save
- Skills system with on-demand loading
- Security: autonomy levels, command allowlists, cost limits
- 532 tests passing, 0 clippy warnings

src/observability/traits.rs

@@ -0,0 +1,52 @@
+use std::time::Duration;
+
+/// Events the observer can record
+#[derive(Debug, Clone)]
+pub enum ObserverEvent {
+    AgentStart {
+        provider: String,
+        model: String,
+    },
+    AgentEnd {
+        duration: Duration,
+        tokens_used: Option<u64>,
+    },
+    ToolCall {
+        tool: String,
+        duration: Duration,
+        success: bool,
+    },
+    ChannelMessage {
+        channel: String,
+        direction: String,
+    },
+    HeartbeatTick,
+    Error {
+        component: String,
+        message: String,
+    },
+}
+
+/// Numeric metrics
+#[derive(Debug, Clone)]
+pub enum ObserverMetric {
+    RequestLatency(Duration),
+    TokensUsed(u64),
+    ActiveSessions(u64),
+    QueueDepth(u64),
+}
+
+/// Core observability trait — implement for any backend
+pub trait Observer: Send + Sync {
+    /// Record a discrete event
+    fn record_event(&self, event: &ObserverEvent);
+
+    /// Record a numeric metric
+    fn record_metric(&self, metric: &ObserverMetric);
+
+    /// Flush any buffered data (no-op for most backends)
+    fn flush(&self) {}
+
+    /// Human-readable name of this observer
+    fn name(&self) -> &str;
+}