Mcp enablement squashed

[dingfeli]

Issue #, if available:

Description of changes:

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 37.03704% with 663 lines in your changes missing coverage. Please review.

Project coverage is 13.86%. Comparing base (44b8205) to head (0f1ae52).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/mcp_client/test_mcp_server/test_server.rs	0.00%	178 Missing ⚠️
crates/mcp_client/src/server.rs	0.00%	175 Missing ⚠️
crates/q_cli/src/cli/chat/tool_manager.rs	19.78%	64 Missing and 9 partials ⚠️
crates/q_cli/src/cli/chat/tools/custom_tool.rs	0.00%	68 Missing ⚠️
crates/mcp_client/src/transport/stdio.rs	44.33%	54 Missing and 5 partials ⚠️
crates/mcp_client/src/client.rs	84.82%	33 Missing and 18 partials ⚠️
crates/mcp_client/src/error.rs	0.00%	18 Missing ⚠️
crates/mcp_client/src/transport/base_protocol.rs	36.00%	16 Missing ⚠️
crates/mcp_client/src/lib.rs	53.33%	4 Missing and 3 partials ⚠️
crates/mcp_client/src/transport/mod.rs	0.00%	6 Missing ⚠️
... and 2 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #883      +/-   ##
==========================================
+ Coverage   13.74%   13.86%   +0.11%     
==========================================
  Files        2360     2370      +10     
  Lines      204440   205527    +1087     
  Branches   184804   185891    +1087     
==========================================
+ Hits        28109    28498     +389     
- Misses     174840   175506     +666     
- Partials     1491     1523      +32     

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