chore(wip): checkpoint P8/C avant chantier Codex inter-agents

Sauvegarde de l'arbre de travail en cours (persistance P8, conversations
C-series, write-portal frontend, médiation d'entrée) avant d'attaquer le
support de la délégation inter-agents pour les profils Codex.

Le round-trip inter-agent question/réponse est couvert sans tokens par
les tests loopback existants (state::mcp_e2e_loopback_tests).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

crates/application/src/agent/catalogue.rs

@@ -19,7 +19,8 @@
 
 use domain::ids::ProfileId;
 use domain::profile::{
-    AgentProfile, ContextInjection, McpCapability, McpConfigStrategy, McpTransport, StructuredAdapter,
+    AgentProfile, ContextInjection, McpCapability, McpConfigStrategy, McpTransport,
+    StructuredAdapter,
 };
 
 /// A fixed UUID namespace used to derive stable ids for reference profiles.
@@ -161,7 +162,9 @@ mod mcp_tests {
             let mcp = profile(slug).mcp.expect("mcp present");
             assert_eq!(
                 mcp.config,
-                McpConfigStrategy::ConfigFile { target: ".mcp.json".to_owned() },
+                McpConfigStrategy::ConfigFile {
+                    target: ".mcp.json".to_owned()
+                },
                 "profile `{slug}` should declare `.mcp.json`"
             );
             assert_eq!(mcp.transport, McpTransport::Stdio);