fix(hermes-auto-improve): trigger asynchrone — répond en <10ms, script en background

Le run Hermes prend ~3min (5 appels LLM). Le serveur retourne maintenant
{"started": true} immédiatement. n8n attend 5min via Wait node puis GET /status.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tools/hermes-auto-improve/trigger-server.py

@@ -3,12 +3,16 @@
 Serveur HTTP minimal pour déclencher hermes-auto-improve depuis n8n.
 Écoute sur 0.0.0.0:9095.
 
-POST /trigger          → lance auto-improve.py (run standard, MAX_FILES fichiers)
-POST /trigger/all      → lance avec --all
-POST /trigger/subdir   → body JSON {"subdir": "ia"} → lance sur un sous-dossier
-POST /trigger/dry-run  → analyse sans commit
-GET  /status           → dernier état (state.json)
-GET  /health           → {"ok": true}
+Les POST /trigger* retournent immédiatement {"started": true}.
+Le script tourne en background thread.
+Polling du résultat via GET /status.
+
+POST /trigger           → run standard (MAX_FILES fichiers)
+POST /trigger/subdir    → body JSON {"subdir": "ia"}
+POST /trigger/dry-run   → analyse sans commit/push
+POST /trigger/daily-pr  → crée PR GitHub + résumé journalier
+GET  /status            → dernier résultat + état running
+GET  /health            → {"ok": true}
 """
 
 import json
@@ -27,11 +31,11 @@ _running     = False
 _last_result = None
 
 
-def run_script(extra_args: list = None) -> dict:
+def run_script(extra_args: list = None):
     global _running, _last_result
     with _lock:
         if _running:
-            return {"error": "already_running"}
+            return
         _running = True
 
     try:
@@ -46,7 +50,6 @@ def run_script(extra_args: list = None) -> dict:
             if result.stderr:
                 log.write(f"STDERR: {result.stderr}")
 
-        # Extraire le JSON du dernier bloc de stdout
         out   = result.stdout
         start = out.rfind("{")
         end   = out.rfind("}") + 1
@@ -54,21 +57,27 @@ def run_script(extra_args: list = None) -> dict:
             _last_result = json.loads(out[start:end])
         else:
             _last_result = {"error": "no_json", "stdout": out[-500:]}
-        return _last_result
 
     except subprocess.TimeoutExpired:
         _last_result = {"error": "timeout"}
-        return _last_result
     except Exception as e:
         _last_result = {"error": str(e)}
-        return _last_result
     finally:
         _running = False
 
 
+def trigger_async(extra_args: list = None) -> dict:
+    with _lock:
+        if _running:
+            return {"started": False, "error": "already_running"}
+    t = threading.Thread(target=run_script, args=(extra_args,), daemon=True)
+    t.start()
+    return {"started": True, "running": True}
+
+
 class Handler(BaseHTTPRequestHandler):
     def log_message(self, fmt, *args):
-        pass  # silencer les logs HTTP par défaut
+        pass
 
     def send_json(self, code: int, data: dict):
         body = json.dumps(data, ensure_ascii=False, indent=2).encode()
@@ -82,41 +91,36 @@ class Handler(BaseHTTPRequestHandler):
         if self.path == "/health":
             self.send_json(200, {"ok": True, "running": _running})
         elif self.path == "/status":
-            if STATE_FILE.exists():
-                state = json.loads(STATE_FILE.read_text())
-                self.send_json(200, {"state": state, "last_result": _last_result, "running": _running})
-            else:
-                self.send_json(200, {"state": None, "last_result": _last_result, "running": _running})
+            state = json.loads(STATE_FILE.read_text()) if STATE_FILE.exists() else None
+            self.send_json(200, {"state": state, "last_result": _last_result, "running": _running})
         else:
             self.send_json(404, {"error": "not_found"})
 
     def do_POST(self):
-        length  = int(self.headers.get("Content-Length", 0))
-        body    = json.loads(self.rfile.read(length)) if length > 0 else {}
+        length = int(self.headers.get("Content-Length", 0))
+        body   = json.loads(self.rfile.read(length)) if length > 0 else {}
 
         if self.path == "/trigger":
-            result = run_script()
-            self.send_json(200, result)
+            self.send_json(200, trigger_async())
 
         elif self.path == "/trigger/all":
-            result = run_script(["--all"])
-            self.send_json(200, result)
+            self.send_json(200, trigger_async(["--all"]))
 
         elif self.path == "/trigger/subdir":
             subdir = body.get("subdir")
             if not subdir:
                 self.send_json(400, {"error": "missing 'subdir' in body"})
                 return
-            result = run_script(["--subdir", subdir])
-            self.send_json(200, result)
+            self.send_json(200, trigger_async(["--subdir", subdir]))
 
         elif self.path == "/trigger/dry-run":
-            result = run_script(["--dry-run"])
-            self.send_json(200, result)
+            self.send_json(200, trigger_async(["--dry-run"]))
+
+        elif self.path == "/trigger/daily-pr":
+            self.send_json(200, trigger_async(["--daily-pr"]))
 
         elif self.path == "/trigger/reset":
-            result = run_script(["--reset"])
-            self.send_json(200, result)
+            self.send_json(200, trigger_async(["--reset"]))
 
         else:
             self.send_json(404, {"error": "not_found"})