refactor: Simplify enable/disable to only manage UCI config

The enable_module() and disable_module() functions were incorrectly also
starting/stopping services. They should only manage UCI configuration flags.
Service lifecycle (start/stop/restart) should be handled by dedicated functions.

**Changes:**

**enable_module():**
- ✅ Sets UCI `secubox.{module}.enabled = '1'`
- ✅ Commits UCI changes
- ❌ Removed: Service enable/start commands
- ✅ Returns success with note to use start_module()

**disable_module():**
- ✅ Sets UCI `secubox.{module}.enabled = '0'`
- ✅ Commits UCI changes
- ❌ Removed: Service stop/disable commands
- ✅ Returns success with note to use stop_module()

**Behavior:**

Before:
```bash
ubus call luci.secubox enable_module '{"module":"example"}'
# Would: Set enabled=1 + Enable service + Start service
```

After:
```bash
ubus call luci.secubox enable_module '{"module":"example"}'
# Only: Set enabled=1 in UCI config

ubus call luci.secubox start_module '{"module":"example"}'
# Separately: Start the actual service
```

**Benefits:**
- ✅ Clear separation of concerns
- ✅ Enable/disable = logical flag in UCI
- ✅ Start/stop/restart = actual service control
- ✅ More predictable behavior
- ✅ Aligns with user expectations

**Testing:**
```bash
# Enable in config
ubus call luci.secubox enable_module '{"module":"network_modes"}'
→ UCI: enabled='1' ✓

# Disable in config
ubus call luci.secubox disable_module '{"module":"network_modes"}'
→ UCI: enabled='0' ✓

# Services not affected, use start/stop separately
```

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

luci-app-secubox/root/usr/libexec/rpcd/luci.secubox

@@ -530,59 +530,35 @@ restart_module() {
 # Enable a module (NEW v0.3.1)
 enable_module() {
 	local module="$1"
-	local config
 
-	config_load secubox
-	config_get config "$module" config ""
-
-	# Set enabled flag in UCI
+	# Set enabled flag in UCI (v0.3.1)
+	# This only activates the module in configuration
+	# Use start_module() to actually start the service
 	uci set secubox.${module}.enabled='1'
 	uci commit secubox
 
-	# Enable and start service if init script exists
-	if [ -x "/etc/init.d/${config}" ]; then
-		/etc/init.d/${config} enable
-		/etc/init.d/${config} start
-
-		json_init
-		json_add_boolean "success" 1
-		json_add_string "message" "Module activé"
-		json_dump
-	else
-		json_init
-		json_add_boolean "success" 0
-		json_add_string "message" "Init script not found"
-		json_dump
-	fi
+	json_init
+	json_add_boolean "success" 1
+	json_add_string "message" "Module activé dans la configuration"
+	json_add_string "note" "Utilisez 'Démarrer' pour lancer le service"
+	json_dump
 }
 
 # Disable a module (NEW v0.3.1)
 disable_module() {
 	local module="$1"
-	local config
 
-	config_load secubox
-	config_get config "$module" config ""
-
-	# Set disabled flag in UCI
+	# Set disabled flag in UCI (v0.3.1)
+	# This only deactivates the module in configuration
+	# Use stop_module() to actually stop the service
 	uci set secubox.${module}.enabled='0'
 	uci commit secubox
 
-	# Disable and stop service if init script exists
-	if [ -x "/etc/init.d/${config}" ]; then
-		/etc/init.d/${config} stop
-		/etc/init.d/${config} disable
-
-		json_init
-		json_add_boolean "success" 1
-		json_add_string "message" "Module désactivé"
-		json_dump
-	else
-		json_init
-		json_add_boolean "success" 0
-		json_add_string "message" "Init script not found"
-		json_dump
-	fi
+	json_init
+	json_add_boolean "success" 1
+	json_add_string "message" "Module désactivé dans la configuration"
+	json_add_string "note" "Utilisez 'Arrêter' pour stopper le service"
+	json_dump
 }
 
 # Get health report