fix: REPL — ask/serve/registry routées vers am au lieu du shell système

is_am_command() ne connaissait pas ask/serve/registry : le REPL les
envoyait au shell système ('command not found'). Ajout aux trois
points de contact (is_am_command, COMMAND_DESCRIPTIONS, banner) +
test élargi. Docs alignées sur v1.0 : README (ask/providers/registry/
serve), ROADMAP v2.3 (v0.7.0 + v1.0.0 livrés), ARCHITECTURE (arbre src
+ section copilote & plateforme), tips ask/serve/registry. Version 1.0.2,
man pages régénérées. CI release : cross-compile Linux musl + Windows
mingw sur un seul runner, macOS optionnel.

src/repl.rs

@@ -113,6 +113,7 @@ const COMMAND_DESCRIPTIONS: &[(&str, &str)] = &[
     ("registry", "publish, search and install agent catalogs (Gitea)"),
     ("providers", "manage the LLM provider registry (base URLs, models, default)"),
     ("suggest", "recommend an agent for a request"),
+    ("ask", "natural language → am commands (local rules first, optional LLM refinement)"),
     ("audit", "who changed what, when (config checksums)"),
     ("service", "register an agent as a system service (autostart)"),
     ("schedule", "plan am commands (daily) and check the fleet health"),
@@ -798,7 +799,7 @@ pub fn banner_box(
             .to_string(),
     ));
     rows.push(inner(
-        "  models     models · models --prune · catalog · suggest · audit".to_string(),
+        "  models     models · models --prune · catalog · suggest · ask · audit".to_string(),
     ));
     rows.push(inner(
         "  automate   service install · schedule add · doctor --watch · monitor · sync · migrate · playbook".to_string(),
@@ -2014,13 +2015,16 @@ pub fn is_am_command(word: &str) -> bool {
             | "tip"
             | "models"
             | "catalog"
+            | "registry"
             | "providers"
             | "suggest"
+            | "ask"
             | "audit"
             | "service"
             | "schedule"
             | "monitor"
             | "web"
+            | "serve"
             | "sync"
             | "migrate"
             | "playbook"
@@ -2676,7 +2680,7 @@ mod tests {
         for cmd in [
             "list", "status", "search", "info", "install", "uninstall", "update", "start",
             "stop", "restart", "run", "doctor", "config", "completion", "self-update",
-            "self-uninstall", "export", "import",
+            "self-uninstall", "export", "import", "ask", "serve", "registry",
         ] {
             assert!(is_am_command(cmd), "{cmd}");
         }