Improve startup scripts, server debug option, and connection help text

app/lib/screens/connect_screen.dart

@@ -23,7 +23,7 @@ class _ConnectScreenState extends State<ConnectScreen> {
     await state.connect(url: _controller.text.trim());
     if (mounted && !state.isConnected) {
       setState(() {
-        _error = 'Cannot reach the server.\nMake sure NexaNote backend is running:\n  python main.py';
+        _error = 'Cannot reach the server.\nStart NexaNote backend from the project folder:\n  bash nexanote.sh\nor run:\n  python main.py';
         _connecting = false;
       });
     }
@@ -150,9 +150,9 @@ class _ConnectScreenState extends State<ConnectScreen> {
                                 color: scheme.onSurface.withOpacity(0.7))),
                       ]),
                       const SizedBox(height: 8),
-                      _code('cd ~/NexaNote'),
-                      _code('source venv/bin/activate'),
+                      _code('cd <your-folder>/NexaNote'),
                       _code('python main.py'),
+                      _code('# or: bash nexanote.sh'),
                     ],
                   ),
                 ),

launch_app.sh

@@ -1,2 +1,14 @@
 #!/bin/bash
-GDK_BACKEND=x11 ~/NexaNote/app/build/linux/x64/release/bundle/app
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+APP_BIN="$SCRIPT_DIR/app/build/linux/x64/release/bundle/app"
+
+if [[ ! -x "$APP_BIN" ]]; then
+  echo "Binaire Flutter introuvable: $APP_BIN"
+  echo "Compilez d'abord l'app avec:"
+  echo "  cd $SCRIPT_DIR/app && flutter build linux --release"
+  exit 1
+fi
+
+GDK_BACKEND=x11 "$APP_BIN"

nexanote.sh

@@ -1,20 +1,38 @@
 #!/bin/bash
-NEXANOTE_DIR="$HOME/NexaNote"
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+NEXANOTE_DIR="$SCRIPT_DIR"
 APP_DIR="$NEXANOTE_DIR/app"
-VENV="$NEXANOTE_DIR/venv/bin/activate"
+VENV_ACTIVATE="$NEXANOTE_DIR/venv/bin/activate"
 LOG_FILE="/tmp/nexanote_backend.log"
+BACKEND_PID=""
+
+cleanup() {
+  if [[ -n "${BACKEND_PID}" ]]; then
+    kill "$BACKEND_PID" 2>/dev/null || true
+  fi
+}
+trap cleanup EXIT
 
-if ! curl -s http://127.0.0.1:8766/health > /dev/null 2>&1; then
+if ! curl -s http://127.0.0.1:8766/health >/dev/null 2>&1; then
   echo "🚀 Démarrage du backend..."
-  source "$VENV"
+  if [[ -f "$VENV_ACTIVATE" ]]; then
+    # shellcheck source=/dev/null
+    source "$VENV_ACTIVATE"
+  else
+    echo "⚠️  venv introuvable ($VENV_ACTIVATE), utilisation du Python système"
+  fi
+
   cd "$NEXANOTE_DIR"
-  python main.py > "$LOG_FILE" 2>&1 &
+  python main.py >"$LOG_FILE" 2>&1 &
   BACKEND_PID=$!
+
   echo -n "⏳ Attente"
-  for i in $(seq 1 20); do
+  for _ in $(seq 1 20); do
     sleep 0.5
     echo -n "."
-    if curl -s http://127.0.0.1:8766/health > /dev/null 2>&1; then
+    if curl -s http://127.0.0.1:8766/health >/dev/null 2>&1; then
       echo " ✅"
       break
     fi
@@ -25,4 +43,3 @@ fi
 
 cd "$APP_DIR"
 GDK_BACKEND=x11 flutter run -d linux
-kill $BACKEND_PID 2>/dev/null

nexanote/sync/server.py

@@ -12,6 +12,7 @@
 
 import argparse
 import hashlib
+import importlib.util
 import logging
 import sys
 from pathlib import Path
@@ -80,14 +81,16 @@ def build_app(
 
         # Middleware
         "middleware_stack": [
-            "wsgidav.debug_filter.WsgiDavDebugFilter",
             "wsgidav.error_printer.ErrorPrinter",
             "wsgidav.http_authenticator.HTTPAuthenticator",
             "wsgidav.dir_browser.WsgiDavDirBrowser",
             "wsgidav.request_resolver.RequestResolver",
         ],
     }
 
+    if importlib.util.find_spec("wsgidav.debug_filter"):
+        config["middleware_stack"].insert(0, "wsgidav.debug_filter.WsgiDavDebugFilter")
+
     return WsgiDAVApp(config)