[PWGLF,PWGMM] Add DCA Mc QA + cleanup

[gbencedi]

No description provided.

[github-actions]

O2 linter results: ❌ 0 errors, ⚠️ 0 warnings, 🔕 0 disabled

[alibuild]

Error while checking build/O2Physics/code-check for 10f44ac at 2026-07-17 20:24:

## sw/BUILD/O2Physics-code-check-latest/log
--
========== List of issues found ==========
++ echo 'Found 55 errors and 7 warnings.'
Found 55 errors and 7 warnings.
++ [[ 55 -gt 0 ]]
++ cat /sw/BUILD/a4724b637f5a2a0388fe2b55aed7d2798010fcc4/O2Physics-code-check/errors.txt
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:25:1: error: included header fwdtrackUtilities.h is not used directly [misc-include-cleaner,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:49:1: error: included header TrackFwd.h is not used directly [misc-include-cleaner,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:93:23: error: unused variable 'CintOne' [clang-diagnostic-unused-const-variable,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:94:23: error: unused variable 'CintTwo' [clang-diagnostic-unused-const-variable,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:108:15: error: unused variable 'CtrackToCollEvtType' [clang-diagnostic-unused-const-variable,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:319:36: error: variable 'mapVtxXrec' is non-const and globally accessible, consider making it const [cppcoreguidelines-avoid-non-const-global-variables,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:320:36: error: variable 'mapVtxYrec' is non-const and globally accessible, consider making it const [cppcoreguidelines-avoid-non-const-global-variables,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:321:36: error: variable 'mapVtxZrec' is non-const and globally accessible, consider making it const [cppcoreguidelines-avoid-non-const-global-variables,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:322:36: error: variable 'mapVtxXgen' is non-const and globally accessible, consider making it const [cppcoreguidelines-avoid-non-const-global-variables,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:323:36: error: variable 'mapVtxYgen' is non-const and globally accessible, consider making it const [cppcoreguidelines-avoid-non-const-global-variables,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:324:36: error: variable 'mapVtxZgen' is non-const and globally accessible, consider making it const [cppcoreguidelines-avoid-non-const-global-variables,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:325:36: error: variable 'mapMcCollIdPerRecColl' is non-const and globally accessible, consider making it const [cppcoreguidelines-avoid-non-const-global-variables,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:327:8: error: constructor does not initialize these fields: pdg, ccdb, gCurrentHadronicRate [cppcoreguidelines-pro-type-member-init,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:465:20: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:568:5: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:591:5: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:604:5: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:1140:7: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:1156:7: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:1197:7: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:1209:7: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:1375:7: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:1413:7: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:1428:7: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:1442:7: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:1479:7: error: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:1651:27: error: the parameter 'atrack' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:1687:5: error: use auto when initializing with a cast to avoid duplicating the type name [modernize-use-auto,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:1687:39: error: do not use static_cast to downcast from a base to a derived class; use dynamic_cast instead [cppcoreguidelines-pro-type-static-cast-downcast,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:1688:23: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:2049:14: error: redundant boolean literal in conditional return statement [readability-simplify-boolean-expr,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:2104:23: error: use 'contains' to check for membership [readability-container-contains,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:2284:11: error: implicit conversion 'bool' -> 'int' [readability-implicit-bool-conversion,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:3576:22: error: narrowing conversion from 'float' to 'int' [bugprone-narrowing-conversions,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:3685:11: error: the 'empty' method should be used to check for emptiness instead of 'size' [readability-container-size-empty,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:3811:27: error: use 'contains' to check for membership [readability-container-contains,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:3830:13: error: the 'empty' method should be used to check for emptiness instead of 'size' [readability-container-size-empty,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:3888:26: error: use 'contains' to check for membership [readability-container-contains,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:3891:26: error: use 'contains' to check for membership [readability-container-contains,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:3894:26: error: use 'contains' to check for membership [readability-container-contains,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:3897:26: error: use 'contains' to check for membership [readability-container-contains,-warnings-as-errors]
PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx:3907:26: error: use 'contains' to check for membership [readability-container-contains,-warnings-as-errors]
[0 more errors; see full log]

Full log here.

[alibuild]

Error while checking build/O2Physics/code-check for 1b07fca at 2026-07-18 22:41:

++ set -euo pipefail
++ [[ -d /sw/slc9_x86-64/Clang/v20.1.7-23 ]]
+++ realpath /sw/BUILD/fc8d224c1578f0abbc49b4905e5a693ef4e17886/O2Physics-code-check/../../O2Physics-latest/O2Physics
++ O2PHYSICS_BUILDDIR=/sw/BUILD/f5bcaede9844d57a35321666825cb778c4b1fd72/O2Physics
++ cp /sw/BUILD/f5bcaede9844d57a35321666825cb778c4b1fd72/O2Physics/compile_commands.json .
+++ python3 -c 'import json, os; print(os.path.commonpath([x["file"] for x in json.loads(open("compile_commands.json").read()) if "sw/BUILD" not in x["file"] and "G__" not in x["file"] and x["file"].endswith(".cxx")]))'
++ O2PHYSICS_SRC=/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0
++ pushd /sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0
/sw/SPECS/slc9_x86-64/O2Physics-code-check/1.0-local106/O2Physics-code-check.sh: line 16: pushd: /sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0: No such file or directory

Full log here.

[alibuild]

Auto-approving on behalf of @gbencedi.