S1: Colony backend skeleton — Axum + SQLite, channels + messages CRUD

Monorepo structure:
- crates/colony-types: API types (serde + ts-rs), separate from DB models
- crates/colony: Axum server, SQLite via sqlx, migrations

Working endpoints:
- GET /api/health
- GET/POST /api/channels
- GET /api/channels/{id}
- GET /api/channels/{id}/messages (?since=, ?type=, ?user_id=)
- POST /api/channels/{id}/messages (with type + metadata)

Data model includes:
- seq monotonic ordering, soft delete, same-channel reply constraint
- Seeded users (benji, neeraj) and #general channel

Also: codex-review skill, .gitignore

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

crates/colony-types/src/lib.rs

@@ -0,0 +1,119 @@
+use chrono::{DateTime, Utc};
+use serde::{Deserialize, Serialize};
+use ts_rs::TS;
+use uuid::Uuid;
+
+// ── API response types (wire format → TypeScript via ts-rs) ──
+
+#[derive(Debug, Clone, Serialize, Deserialize, TS)]
+#[ts(export)]
+pub struct User {
+    pub id: Uuid,
+    pub username: String,
+    pub display_name: String,
+    pub role: UserRole,
+    pub created_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, TS, PartialEq)]
+#[ts(export)]
+#[serde(rename_all = "snake_case")]
+pub enum UserRole {
+    Ape,
+    Agent,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, TS)]
+#[ts(export)]
+pub struct Channel {
+    pub id: Uuid,
+    pub name: String,
+    pub description: String,
+    pub created_by: Uuid,
+    pub created_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, TS)]
+#[ts(export)]
+pub struct Message {
+    pub id: Uuid,
+    pub seq: i64,
+    pub channel_id: Uuid,
+    pub user: User,
+    pub r#type: MessageType,
+    pub content: String,
+    #[ts(optional)]
+    pub metadata: Option<serde_json::Value>,
+    #[ts(optional)]
+    pub reply_to: Option<Uuid>,
+    pub created_at: DateTime<Utc>,
+    #[ts(optional)]
+    pub updated_at: Option<DateTime<Utc>>,
+    #[ts(optional)]
+    pub deleted_at: Option<DateTime<Utc>>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, TS, PartialEq)]
+#[ts(export)]
+#[serde(rename_all = "snake_case")]
+pub enum MessageType {
+    Text,
+    Code,
+    Result,
+    Error,
+    Plan,
+}
+
+// ── Request types ──
+
+#[derive(Debug, Deserialize, TS)]
+#[ts(export)]
+pub struct CreateChannel {
+    pub name: String,
+    pub description: String,
+}
+
+#[derive(Debug, Deserialize, TS)]
+#[ts(export)]
+pub struct PostMessage {
+    pub content: String,
+    pub r#type: MessageType,
+    #[ts(optional)]
+    pub metadata: Option<serde_json::Value>,
+    #[ts(optional)]
+    pub reply_to: Option<Uuid>,
+}
+
+// ── WebSocket event types ──
+
+#[derive(Debug, Clone, Serialize, TS)]
+#[ts(export)]
+#[serde(tag = "event", content = "data")]
+#[serde(rename_all = "snake_case")]
+pub enum WsEvent {
+    Message(Message),
+    Edit(Message),
+    Delete { id: Uuid },
+}
+
+// ── Query params ──
+
+#[derive(Debug, Deserialize)]
+pub struct MessageQuery {
+    pub since: Option<DateTime<Utc>>,
+    pub r#type: Option<MessageType>,
+    pub user_id: Option<Uuid>,
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn export_ts_types() {
+        // This test generates TypeScript bindings.
+        // Run: cargo test -p colony-types export_ts_types
+        // Files go to colony-types/bindings/
+        let _ = User::export_all();
+    }
+}