Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@indra/cmake/Copy3rdPartyLibs.cmake`:
- Around line 44-77: Do not remove the Windows VC runtime staging in
Copy3rdPartyLibs.cmake; the commented-out InstallRequiredSystemLibraries /
to_staging_dirs / to_viewer_staging_dirs logic is still needed for /MD-based
packages. Keep the existing system runtime copy flow intact so cef-bin,
webrtc-bin, vlc-bin, and the llplugin staging path continue to receive the
required MSVC DLLs on clean machines.

In `@indra/newview/llvoiceclient.cpp`:
- Around line 190-195: The current DISABLE_WEBRTC guard leaves an empty
VoiceServerType unresolved and lets getOutgoingCallInterface() silently fall
back to the local module, so update llvoiceclient.cpp to compute one effective
server type up front and use it consistently in both the startup path and
getOutgoingCallInterface(). If WEBRTC is unavailable and no non-WebRTC fallback
exists, reject the unsupported type immediately instead of allowing the empty
value to propagate; otherwise, route the resolved type through the same
selection logic everywhere voiceServerType is used.

In `@indra/vcpkg/ports/tracy/portfile.cmake`:
- Around line 49-53: The Tracy portfile is branching on VCPKG_CRT_LINKAGE for
copying the debug artifact, but this decision should be based on
VCPKG_LIBRARY_LINKAGE instead. Update the conditional in the portfile logic
around the TracyClient copy step so the .lib path is used for static library
linkage and the .dll path is used for dynamic library linkage, keeping the
existing file copy behavior otherwise.

In `@indra/vcpkg/ports/webrtc-bin/vcpkg.json`:
- Line 3: The WebRTC port manifest version is out of sync with the artifacts
fetched by the portfile, so update the version metadata in vcpkg.json and the
download references in portfile.cmake to the same upstream build identifier. Use
the webrtc-bin manifest and the download URLs in portfile.cmake as the source of
truth, and make sure the version-string matches the binaries being installed.

In `@indra/vcpkg/ports/zlib/portfile.cmake`:
- Around line 26-33: Exclude MinGW from the Windows static rename logic in the
zlib portfile so only the MSVC path is renamed. Update the conditional around
the file(RENAME) calls in portfile.cmake to also check VCPKG_TARGET_IS_MINGW,
keeping the existing VCPKG_TARGET_IS_WINDOWS and VCPKG_LIBRARY_LINKAGE STREQUAL
static guards intact. This should ensure the rename block only runs for the
zlibstatic library names produced by the MSVC toolchain and not for MinGW
builds.

---

Outside diff comments:
In `@indra/cmake/00-Common.cmake`:
- Around line 163-169: The Windows Debug build is still being forced to define
DISABLE_WEBRTC=1, so the new cache option cannot override that configuration.
Update the compile-definition logic in the Common CMake block so that
llvoiceclient.cpp sees a single source of truth: make the Debug behavior and the
DISABLE_WEBRTC option flow through the same conditional, instead of
unconditionally adding the Debug definition separately. Use the existing
DISABLE_WEBRTC option check and the Windows Debug compile definition section
together so Debug builds only disable WebRTC when the option says so.