Fix smoke tests referencing nonexistent serena-go tool

.github/workflows/smoke-claude.md

@@ -63,7 +63,7 @@ timeout-minutes: 10
 ## Test Requirements
 
 1. **GitHub MCP Testing**: Review the last 2 merged pull requests in ${{ github.repository }}
-2. **Serena Go Testing**: Use the `serena-go` tool to run a basic go command like "go version" to verify the tool is available
+2. **Serena Go Testing**: Use the `serena` tool to run a basic go command like "go version" to verify the tool is available
 3. **Playwright Testing**: Use playwright to navigate to https://github.com and verify the page title contains "GitHub"
 4. **Tavily Web Search Testing**: Use the Tavily MCP server to perform a web search for "GitHub Agentic Workflows" and verify that results are returned with at least one item
 5. **File Writing Testing**: Create a test file `/tmp/gh-aw/agent/smoke-test-claude-${{ github.run_id }}.txt` with content "Smoke test passed for Claude at $(date)" (create the directory if it doesn't exist)

.github/workflows/smoke-codex.md

@@ -58,7 +58,7 @@ timeout-minutes: 10
 ## Test Requirements
 
 1. **GitHub MCP Testing**: Review the last 2 merged pull requests in ${{ github.repository }}
-2. **Serena Go Testing**: Use the `serena-go` tool to run a basic go command like "go version" to verify the tool is available
+2. **Serena Go Testing**: Use the `serena` tool to run a basic go command like "go version" to verify the tool is available
 3. **Playwright Testing**: Use playwright to navigate to https://github.com and verify the page title contains "GitHub"
 4. **Tavily Web Search Testing**: Use the Tavily MCP server to perform a web search for "GitHub Agentic Workflows" and verify that results are returned with at least one item
 5. **File Writing Testing**: Create a test file `/tmp/gh-aw/agent/smoke-test-codex-${{ github.run_id }}.txt` with content "Smoke test passed for Codex at $(date)" (create the directory if it doesn't exist)

.github/workflows/smoke-copilot.md

@@ -61,7 +61,7 @@ strict: true
 ## Test Requirements
 
 1. **GitHub MCP Testing**: Review the last 2 merged pull requests in ${{ github.repository }}
-2. **Serena Go Testing**: Use the `serena-go` tool to run a basic go command like "go version" to verify the tool is available
+2. **Serena Go Testing**: Use the `serena` tool to run a basic go command like "go version" to verify the tool is available
 3. **Playwright Testing**: Use playwright to navigate to <https://github.com> and verify the page title contains "GitHub"
 4. **File Writing Testing**: Create a test file `/tmp/gh-aw/agent/smoke-test-copilot-${{ github.run_id }}.txt` with content "Smoke test passed for Copilot at $(date)" (create the directory if it doesn't exist)
 5. **Bash Tool Testing**: Execute bash commands to verify file creation was successful (use `cat` to read the file back)