fix(review): address v1.0.6 audit findings

[LimiNode]

Summary

• Fix confirmed v1.0.6 audit findings in constants, CMake installation, documentation metadata, comments, and MQL5 manual test reporting.
• Keep convenience aliases and the flat format-parser dispatch unchanged; document criteria for any future legacy-alias split.
• Keep docs/mainpage.md and Doxyfile version-neutral; inject the documentation version during publish from CMake on main or the release tag on v* pushes.
• Require release tags to match the CMake project version before publishing documentation.

Validation

• MinGW Debug build and CTest: 50/50 passed.
• MinGW Release build and CTest: 50/50 passed with runtime checks provided by TIME_SHIELD_TEST_CHECK.
• C++11, C++14, and C++17 ODR targets passed.
• Installed CMake consumer built successfully without the GNUInstallDirs developer warning.
• Publish version-injection block verified locally for main and matching tag scenarios.
• Mismatched tag version is rejected before documentation files are modified.
• GitHub Actions: all 10 CI jobs passed.
• git diff --check passed.

Review notes

• MQL5 was manually checked because MetaEditor is unavailable in the local environment.
• Doxygen generation was not run locally because the Doxygen executable is unavailable; the publish workflow runs on main and v* tag pushes.
• vcpkg metadata remains at 1.0.5 until v1.0.6 is released.

[LimiNode]

Rebased the PR branch onto the latest main (including #116's header-guard changes), resolved the MQL5 umbrella-header deletion consistently with upstream, and force-updated the branch. The PR is mergeable again. Rebased MinGW Release build/examples and CTest pass: 50/50; C++11/14/17 ODR targets also pass.