Add resolve action for name-based resource lookup in MCP

[titouanmathis]

Implements #70 — adds a resolve action to servers and sites resources for name-based lookup.

Changes

Core

• Added resolve to ACTIONS constant
• New resolveServers() executor — partial/exact name matching
• New resolveSites() executor — partial/exact domain matching
• Exported from core index

MCP

• Added resolve to READ_ACTIONS
• Wired into handleServers and handleSites via createResourceHandler
• Added query parameter to forge tool input schema
• Updated help and schema handlers
• Comprehensive test coverage (executor + handler levels)

Usage

{"resource": "servers", "action": "resolve", "query": "prod"}

Returns:

2 server(s) matching "prod":
• prod-web-1 (ID: 725393)
• studio-meta-prod-1 (ID: 829790)

Closes #70

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.80%. Comparing base (9714cf5) to head (9455eab).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #72   +/-   ##
=======================================
  Coverage   99.80%   99.80%           
=======================================
  Files         221      223    +2     
  Lines        3561     3596   +35     
  Branches      810      845   +35     
=======================================
+ Hits         3554     3589   +35     
  Misses          7        7           

Flag	Coverage Δ
unittests	99.80% <100.00%> (+<0.01%)	⬆️

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