fix(permissions): tools MCP inter-projets exposés (idea_project_*) + contactable agent/template persisté — update_agent_contactable (application/web-server/app-tauri), defaultContactable TemplateEditor save/reopen, groupes MCP 'IdeA inter-projets' avec fallback, permissions agent Contactable — #267 (QA verte)

crates/backend/src/dto.rs

@@ -3067,6 +3067,18 @@ pub struct UpdateAgentEffortRequestDto {
     pub effort: Option<EffortSelection>,
 }
 
+/// Request DTO for `update_agent_contactable`.
+#[derive(Debug, Clone, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct UpdateAgentContactableRequestDto {
+    /// Id of the owning project.
+    pub project_id: String,
+    /// Id of the agent whose cross-project contactability changes.
+    pub agent_id: String,
+    /// Whether agents from other projects may contact this agent.
+    pub contactable: bool,
+}
+
 /// Response DTO for `change_agent_profile`: the mutated agent plus the freshly
 /// relaunched session when a live session was hot-swapped (absent otherwise).
 #[derive(Debug, Clone, Serialize)]

crates/backend/src/lib.rs

@@ -54,11 +54,11 @@ use application::{
     SpawnBackgroundCommand, StopLiveAgent, StructuredRoutingMode, StructuredSessions,
     SuggestedThisSession, SyncAgentWithTemplate, TerminalSessions, TouchDevice,
     UnassignSkillFromAgent, UnassignTicketFromSprint, UninstallPlugin, UnlinkIssues,
-    UpdateAgentContext, UpdateAgentEffort, UpdateAgentMcpToolPermissions, UpdateAgentPermissions,
-    UpdateAgentSystemPermissions, UpdateIssue, UpdateIssueCarnet, UpdateLiveState, UpdateMemory,
-    UpdateProjectContext, UpdateProjectMcpToolPermissions, UpdateProjectPermissions,
-    UpdateProjectSystemPermissions, UpdateSkill, UpdateTemplate, WakeSessionProvider, WriteMemory,
-    WriteToTerminal, AGENT_MEMORY_RECALL_BUDGET,
+    UpdateAgentContactable, UpdateAgentContext, UpdateAgentEffort, UpdateAgentMcpToolPermissions,
+    UpdateAgentPermissions, UpdateAgentSystemPermissions, UpdateIssue, UpdateIssueCarnet,
+    UpdateLiveState, UpdateMemory, UpdateProjectContext, UpdateProjectMcpToolPermissions,
+    UpdateProjectPermissions, UpdateProjectSystemPermissions, UpdateSkill, UpdateTemplate,
+    WakeSessionProvider, WriteMemory, WriteToTerminal, AGENT_MEMORY_RECALL_BUDGET,
 };
 use async_trait::async_trait;
 use domain::ports::{
@@ -1287,6 +1287,8 @@ pub struct BackendCore {
     pub update_agent_permissions: Arc<UpdateAgentPermissions>,
     /// Update one agent effort override.
     pub update_agent_effort: Arc<UpdateAgentEffort>,
+    /// Update one agent's cross-project contactability.
+    pub update_agent_contactable: Arc<UpdateAgentContactable>,
     /// Resolve effective permissions for one agent.
     pub resolve_agent_permissions: Arc<ResolveAgentPermissions>,
     /// Read the project system permission document.
@@ -2454,6 +2456,8 @@ impl BackendCore {
             &permission_store_port,
         )));
         let update_agent_effort = Arc::new(UpdateAgentEffort::new(Arc::clone(&contexts_port)));
+        let update_agent_contactable =
+            Arc::new(UpdateAgentContactable::new(Arc::clone(&contexts_port)));
         let resolve_agent_permissions = Arc::new(ResolveAgentPermissions::new(Arc::clone(
             &permission_store_port,
         )));
@@ -3296,6 +3300,7 @@ impl BackendCore {
             update_project_permissions,
             update_agent_permissions,
             update_agent_effort,
+            update_agent_contactable,
             resolve_agent_permissions,
             get_project_system_permissions,
             update_project_system_permissions,