refactor: use MCP protocol to access mcp.run via SSE/stdio (#27)

* refactor: use mcp client

cleanup: remove builtin search tool (#26)

fix: chat result type (#25)

fix: chat response handling (#24)

fix: ollama support

fix: ignore builtins argument, default cli history dir to /tmp (#21)

fix: search should not be async (#19)

* fix: tests/search

* chore: bump version

test: add more tests (#18)

chore: prepare v0.4.0 release (#17)

chore: update deps, bump to 0.3.0