MCP Integration Test Fix

The MCP integration tests were silently failing due to two root causes: WikiEngine lazy initialization during test setup, and Maven Failsafe's testFailureIgnore setting suppressing failures.

Root Causes

Lazy initialization — The WikiEngine was not fully initialized when MCP tools tried to access managers during integration tests, causing null pointer exceptions
Silent failures — The testFailureIgnore configuration in the Failsafe plugin meant test failures were logged but did not break the build

Fix

Ensured WikiEngine is fully initialized before MCP tool registration
Removed testFailureIgnore so integration test failures properly fail the build
Added explicit failsafe reporting to surface test results

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