start contextuel : am start sans argument lance l'agent par defaut du projet (issue #30) - resolution pure resolve_start_target, restart identique, REPL sans agent obligatoire

src/commands/run_cmd.rs

@@ -11,10 +11,25 @@ use std::ffi::OsString;
 use std::path::PathBuf;
 use std::process::Command;
 
+/// Resolve the start target: the explicit agent/alias/group when given,
+/// otherwise the default agent of the project containing cwd (issue #30).
+pub fn resolve_start_target(app: &App, cwd: &std::path::Path, agent: Option<&str>) -> Result<String> {
+    if let Some(a) = agent.filter(|s| !s.is_empty()) {
+        return Ok(a.to_string());
+    }
+    crate::projects::default_agent_for_dir(app, cwd).ok_or_else(|| {
+        anyhow!(
+            "no agent given — set default_agent in this project's profile ('am init' does it) or pass an agent name"
+        )
+    })
+}
+
 pub fn start(app: &App, opts: &StartArgs) -> Result<i32> {
+    let cwd = std::env::current_dir().unwrap_or_default();
+    let target = resolve_start_target(app, &cwd, opts.agent.as_deref())?;
     let extra_env = parse_env_list(&opts.env)?;
     let extra_args = parse_extra_args(&opts.args);
-    if let Some(group) = crate::catalog::Catalog::parse_group_selector(&opts.agent) {
+    if let Some(group) = crate::catalog::Catalog::parse_group_selector(&target) {
         let members = app.catalog.group_members(group);
         if members.is_empty() {
             bail!("unknown group '{group}'");
@@ -24,7 +39,7 @@ pub fn start(app: &App, opts: &StartArgs) -> Result<i32> {
         }
         return Ok(0);
     }
-    let agent = require_agent(app, &opts.agent)?;
+    let agent = require_agent(app, &target)?;
     start_one(app, agent, &extra_args, &extra_env, opts.notify, opts.background)
 }
 
@@ -197,7 +212,9 @@ fn stop_one(app: &App, agent: &AgentDef, force: bool, timeout: u64) -> Result<i3
 
 pub fn restart(app: &App, opts: &StartArgs, force: bool, timeout: Option<u64>) -> Result<i32> {
     let timeout = timeout.unwrap_or_else(|| app.config.settings.stop_timeout());
-    if let Some(group) = crate::catalog::Catalog::parse_group_selector(&opts.agent) {
+    let cwd = std::env::current_dir().unwrap_or_default();
+    let target = resolve_start_target(app, &cwd, opts.agent.as_deref())?;
+    if let Some(group) = crate::catalog::Catalog::parse_group_selector(&target) {
         let members = app.catalog.group_members(group);
         if members.is_empty() {
             bail!("unknown group '{group}'");
@@ -212,7 +229,7 @@ pub fn restart(app: &App, opts: &StartArgs, force: bool, timeout: Option<u64>) -
         }
         return Ok(0);
     }
-    let agent = require_agent(app, &opts.agent)?;
+    let agent = require_agent(app, &target)?;
     stop_one(app, agent, force, timeout)?;
     let extra_env = parse_env_list(&opts.env)?;
     let extra_args = parse_extra_args(&opts.args);