chore: bump version to 0.4.8

Custom tools were displayed as enabled in the UI but never sent to
Ollama because getEnabledToolDefinitions() only queried the builtin
tool registry. Now iterates customTools and includes enabled ones.

Fixes #4

backend/cmd/server/main.go

@@ -18,7 +18,7 @@ import (
 )
 
 // Version is set at build time via -ldflags, or defaults to dev
-var Version = "0.4.7"
+var Version = "0.4.8"
 
 func getEnvOrDefault(key, defaultValue string) string {
 	if value := os.Getenv(key); value != "" {

frontend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "vessel",
-  "version": "0.4.7",
+  "version": "0.4.8",
   "private": true,
   "type": "module",
   "scripts": {

frontend/src/lib/stores/tools.svelte.ts

@@ -110,8 +110,25 @@ class ToolsState {
 			return [];
 		}
 
-		const definitions = toolRegistry.getDefinitions();
-		return definitions.filter(def => this.isToolEnabled(def.function.name));
+		// Get enabled builtin tools
+		const builtinDefs = toolRegistry.getDefinitions();
+		const enabled = builtinDefs.filter(def => this.isToolEnabled(def.function.name));
+
+		// Add enabled custom tools
+		for (const custom of this.customTools) {
+			if (custom.enabled && this.isToolEnabled(custom.name)) {
+				enabled.push({
+					type: 'function',
+					function: {
+						name: custom.name,
+						description: custom.description,
+						parameters: custom.parameters
+					}
+				});
+			}
+		}
+
+		return enabled;
 	}
 
 	/**