feat: add web tools

src/agents/system-prompt.ts

@@ -54,6 +54,8 @@ export function buildAgentSystemPrompt(params: {
     ls: "List directory contents",
     exec: "Run shell commands",
     process: "Manage background exec sessions",
+    web_search: "Search the web (Brave API)",
+    web_fetch: "Fetch and extract readable content from a URL",
     // Channel docking: add login tools here when a channel needs interactive linking.
     browser: "Control web browser",
     canvas: "Present/eval/snapshot the Canvas",
@@ -81,6 +83,8 @@ export function buildAgentSystemPrompt(params: {
     "ls",
     "exec",
     "process",
+    "web_search",
+    "web_fetch",
     "browser",
     "canvas",
     "nodes",