Drop web_search/web_fetch from researcher and worker agents

The researcher now relies on its web skills (firecrawl) through safe_bash
instead of the web tool extensions; the worker's toolset shrinks to
read/write/edit/bash.

agents/researcher.md

@@ -1,7 +1,7 @@
 ---
 name: researcher
 description: Web researcher — searches the web and synthesizes findings
-tools: web_search, web_fetch, safe_bash
+tools: safe_bash
 model: openai-codex/gpt-5.6-luna
 thinking: xhigh
 system-prompt: append
@@ -14,9 +14,9 @@ You operate in an isolated context with no knowledge of any prior conversation.
 
 Process:
 1. Break the question into 2-4 searchable facets
-2. Search with `web_search` using varied angles
+2. Search with the web using varied angles
 3. Read the answers. Identify what's well-covered, what has gaps.
-4. For the 2-3 most promising source URLs, use `web_fetch` to get full page content
+4. For the 2-3 most promising source URLs, use firecrawl to get full page content
 5. Synthesize everything into a brief that directly answers the question
 
 Search strategy — always vary your angles: