feat: add workspace-isolated toolhost runtime and capability-gap skill loop

internal/toolhost/remote_tool.go

@@ -0,0 +1,36 @@
+package toolhost
+
+import (
+	"context"
+	"time"
+)
+
+type RemoteTool struct {
+	name        string
+	description string
+	client      *Client
+	callTimeout time.Duration
+}
+
+func NewRemoteTool(name, description string, callTimeout time.Duration, client *Client) *RemoteTool {
+	if callTimeout <= 0 {
+		callTimeout = 15 * time.Second
+	}
+	return &RemoteTool{name: name, description: description, client: client, callTimeout: callTimeout}
+}
+
+func (t *RemoteTool) Name() string { return t.name }
+
+func (t *RemoteTool) Description() string { return t.description }
+
+func (t *RemoteTool) Call(ctx context.Context, input string) (string, error) {
+	if ctx == nil {
+		ctx = context.Background()
+	}
+	if _, ok := ctx.Deadline(); !ok {
+		var cancel context.CancelFunc
+		ctx, cancel = context.WithTimeout(ctx, t.callTimeout)
+		defer cancel()
+	}
+	return t.client.ToolCall(ctx, t.name, input)
+}