feat: add main features

Agents for developpement added + frontend add + backend added. Git viewer created + agent and template creator + layout and project creator

crates/domain/src/events.rs

@@ -0,0 +1,79 @@
+//! Domain events published on the [`crate::ports::EventBus`] and relayed to the
+//! presentation layer (ARCHITECTURE §3.2).
+
+use crate::ids::{AgentId, ProjectId, SessionId, TemplateId};
+use crate::template::TemplateVersion;
+
+/// Events emitted by the domain/application as state changes occur.
+///
+/// Deliberately *not* `Serialize`/`Deserialize`: events are an in-process
+/// concern relayed to IPC by an infrastructure adapter, which owns the wire
+/// format. `PtyOutput` in particular is usually short-circuited to a Tauri
+/// channel rather than serialised here.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum DomainEvent {
+    /// A project was created.
+    ProjectCreated {
+        /// The new project.
+        project_id: ProjectId,
+    },
+    /// An agent was launched in a terminal.
+    AgentLaunched {
+        /// The agent.
+        agent_id: AgentId,
+        /// The session it runs in.
+        session_id: SessionId,
+    },
+    /// An agent's process exited.
+    AgentExited {
+        /// The agent.
+        agent_id: AgentId,
+        /// Exit code.
+        code: i32,
+    },
+    /// A template was updated (content changed, version bumped).
+    TemplateUpdated {
+        /// The template.
+        template_id: TemplateId,
+        /// New version.
+        version: TemplateVersion,
+    },
+    /// A synchronized agent is behind its template.
+    AgentDriftDetected {
+        /// The drifting agent.
+        agent_id: AgentId,
+        /// Version the agent is currently at.
+        from: TemplateVersion,
+        /// Version available from the template.
+        to: TemplateVersion,
+    },
+    /// A synchronized agent received its template update.
+    AgentSynced {
+        /// The agent.
+        agent_id: AgentId,
+        /// Version it was brought up to.
+        to: TemplateVersion,
+    },
+    /// A tab's layout changed.
+    LayoutChanged {
+        /// The project whose layout changed.
+        project_id: ProjectId,
+    },
+    /// A remote host connection was established.
+    RemoteConnected {
+        /// The project on that remote.
+        project_id: ProjectId,
+    },
+    /// Git state for a project changed.
+    GitStateChanged {
+        /// The project.
+        project_id: ProjectId,
+    },
+    /// Raw PTY output (usually routed to a dedicated channel, not this bus).
+    PtyOutput {
+        /// The session.
+        session_id: SessionId,
+        /// Output bytes.
+        bytes: Vec<u8>,
+    },
+}