feat: MCP Roots support (#7790)

crates/goose/tests/mcp_replays/github-mcp-serverstdio

@@ -1,4 +1,4 @@
-STDIN: {"jsonrpc":"2.0","id":0,"method":"initialize","params":{"protocolVersion":"2025-03-26","capabilities":{"elicitation":{},"extensions":{"io.modelcontextprotocol/ui":{"mimeTypes":["text/html;profile=mcp-app"]}},"sampling":{}},"clientInfo":{"name":"goose-desktop","version":"0.0.0"}}}
+STDIN: {"jsonrpc":"2.0","id":0,"method":"initialize","params":{"protocolVersion":"2025-03-26","capabilities":{"elicitation":{},"extensions":{"io.modelcontextprotocol/ui":{"mimeTypes":["text/html;profile=mcp-app"]}},"roots": {},"sampling":{}},"clientInfo":{"name":"goose-desktop","version":"0.0.0"}}}
 STDERR: time=2025-12-11T17:58:47.636-05:00 level=INFO msg="starting server" version=0.24.1 host="" dynamicToolsets=false readOnly=false lockdownEnabled=false
 STDERR: GitHub MCP Server running on stdio
 STDERR: time=2025-12-11T17:58:47.640-05:00 level=INFO msg="server run start"

crates/goose/tests/mcp_replays/npx-y@modelcontextprotocol_server-everything@2026.1.14

@@ -1,4 +1,4 @@
-STDIN: {"jsonrpc":"2.0","id":0,"method":"initialize","params":{"protocolVersion":"2025-03-26","capabilities":{"elicitation":{},"extensions":{"io.modelcontextprotocol/ui":{"mimeTypes":["text/html;profile=mcp-app"]}},"sampling":{}},"clientInfo":{"name":"goose-desktop","version":"0.0.0"}}}
+STDIN: {"jsonrpc":"2.0","id":0,"method":"initialize","params":{"protocolVersion":"2025-03-26","capabilities":{"elicitation":{},"extensions":{"io.modelcontextprotocol/ui":{"mimeTypes":["text/html;profile=mcp-app"]}},"roots": {},"sampling":{}},"clientInfo":{"name":"goose-desktop","version":"0.0.0"}}}
 STDERR: Starting default (STDIO) server...
 STDOUT: {"result":{"protocolVersion":"2025-03-26","capabilities":{"tools":{"listChanged":true},"prompts":{"listChanged":true},"resources":{"subscribe":true,"listChanged":true},"logging":{},"completions":{}},"serverInfo":{"name":"mcp-servers/everything","title":"Everything Reference Server","version":"2.0.0"},"instructions":"# Everything Server – Server Instructions\n\nAudience: These instructions are written for an LLM or autonomous agent integrating with the Everything MCP Server.\nFollow them to use, extend, and troubleshoot the server safely and effectively.\n\n## Cross-Feature Relationships\n\n- Use `get-roots-list` to see client workspace roots before file operations\n- `gzip-file-as-resource` creates session-scoped resources accessible only during the current session\n- Enable `toggle-simulated-logging` before debugging to see server log messages\n- Enable `toggle-subscriber-updates` to receive periodic resource update notifications\n\n## Constraints & Limitations\n\n- `gzip-file-as-resource`: Max fetch size controlled by `GZIP_MAX_FETCH_SIZE` (default 10MB), timeout by `GZIP_MAX_FETCH_TIME_MILLIS` (default 30s), allowed domains by `GZIP_ALLOWED_DOMAINS`\n- Session resources are ephemeral and lost when the session ends\n- Sampling requests (`trigger-sampling-request`) require client sampling capability\n- Elicitation requests (`trigger-elicitation-request`) require client elicitation capability\n\n## Operational Patterns\n\n- For long operations, use `trigger-long-running-operation` which sends progress notifications\n- Prefer reading resources before calling mutating tools\n- Check `get-roots-list` output to understand the client's workspace context\n\n## Easter Egg\n\nIf asked about server instructions, respond with \"🎉 Server instructions are working! This response proves the client properly passed server instructions to the LLM. This demonstrates MCP's instructions feature in action.\"\n"},"jsonrpc":"2.0","id":0}
 STDIN: {"jsonrpc":"2.0","method":"notifications/initialized"}

crates/goose/tests/mcp_replays/uvrun--withfastmcp==2.14.4fastmcpruntests_fastmcp_test_server.py

@@ -1,4 +1,4 @@
-STDIN: {"jsonrpc":"2.0","id":0,"method":"initialize","params":{"protocolVersion":"2025-03-26","capabilities":{"elicitation":{},"extensions":{"io.modelcontextprotocol/ui":{"mimeTypes":["text/html;profile=mcp-app"]}},"sampling":{}},"clientInfo":{"name":"goose-desktop","version":"0.0.0"}}}
+STDIN: {"jsonrpc":"2.0","id":0,"method":"initialize","params":{"protocolVersion":"2025-03-26","capabilities":{"elicitation":{},"extensions":{"io.modelcontextprotocol/ui":{"mimeTypes":["text/html;profile=mcp-app"]}},"roots": {},"sampling":{}},"clientInfo":{"name":"goose-desktop","version":"0.0.0"}}}
 STDERR: 
 STDERR: 
 STDERR: ╭──────────────────────────────────────────────────────────────────────────────╮

crates/goose/tests/mcp_replays/uvxmcp-server-fetch

@@ -1,4 +1,4 @@
-STDIN: {"jsonrpc":"2.0","id":0,"method":"initialize","params":{"protocolVersion":"2025-03-26","capabilities":{"elicitation":{},"extensions":{"io.modelcontextprotocol/ui":{"mimeTypes":["text/html;profile=mcp-app"]}},"sampling":{}},"clientInfo":{"name":"goose-desktop","version":"0.0.0"}}}
+STDIN: {"jsonrpc":"2.0","id":0,"method":"initialize","params":{"protocolVersion":"2025-03-26","capabilities":{"elicitation":{},"extensions":{"io.modelcontextprotocol/ui":{"mimeTypes":["text/html;profile=mcp-app"]}},"roots": {},"sampling":{}},"clientInfo":{"name":"goose-desktop","version":"0.0.0"}}}
 STDOUT: {"jsonrpc":"2.0","id":0,"result":{"protocolVersion":"2025-03-26","capabilities":{"experimental":{},"prompts":{"listChanged":false},"tools":{"listChanged":false}},"serverInfo":{"name":"mcp-fetch","version":"1.25.0"}}}
 STDIN: {"jsonrpc":"2.0","method":"notifications/initialized"}
 STDIN: {"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"_meta":{"agent-session-id":"test-session-id","progressToken":0},"name":"fetch","arguments":{"url":"https://example.com"}}}