[Infrastructure,Tools,Common,Tutorial,PWGDQ,PWGHF,PWGLF] [WIP] [ML] Fix for memory issue in ML headers

[ChSonnabend]

This PR fixes the dangling float* pointers and replaces it with a std::vector allocation.

[github-actions]

O2 linter results: ❌ 357 errors, ⚠️ 131 warnings, 🔕 0 disabled

[ChSonnabend]

This still needs to be tested but should fix a memory issue spotted by @mhemmer-cern and discussed with @fmazzasc
Please do not merge yet.

[alibuild]

Error while checking build/O2Physics/o2 for be8a4a7 at 2026-09-08 20:34:

## sw/BUILD/O2Physics-latest/log
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/Tools/ML/MlResponse.h:232:85: error: cannot convert 'std::vector<float>' to 'float*' in initialization
ninja: build stopped: subcommand failed.

Full log here.

[alibuild]

Error while checking build/O2Physics/code-check for be8a4a7 at 2026-09-08 20:45:

## sw/BUILD/O2Physics-latest/log
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/Tools/ML/MlResponse.h:232:85: error: cannot convert 'std::vector<float>' to 'float*' in initialization
ninja: build stopped: subcommand failed.

Full log here.

[alibuild]

Error while checking build/O2Physics/staging for be8a4a7 at 2026-09-08 21:04:

## sw/BUILD/O2Physics-latest/log
/sw/SOURCES/O2Physics/slc9_x86-64-slc9_x86-64/0/Tools/ML/MlResponse.h:232:85: error: cannot convert 'std::vector<float>' to 'float*' in initialization
ninja: build stopped: subcommand failed.

Full log here.

[alibuild]

Error while checking build/O2Physics/code-check for a31fa89 at 2026-09-10 03:14:

## sw/BUILD/O2Physics-code-check-latest/log
--
========== List of issues found ==========
++ echo 'Found 2 errors and 451 warnings.'
Found 2 errors and 451 warnings.
++ [[ 2 -gt 0 ]]
++ cat /sw/BUILD/31717eb1e0eea9db0ad347699593ecbfc376bc18/O2Physics-code-check/errors.txt
PWGHF/TableProducer/candidateSelectorLcPidMl.cxx:154:11: error: 'emplace_back' is called inside a loop; consider pre-allocating the container capacity before the loop [performance-inefficient-vector-operation,-warnings-as-errors]
Tools/ML/model.h:25:1: error: included header onnxruntime_c_api.h is not used directly [misc-include-cleaner,-warnings-as-errors]
++ [[ 451 -gt 0 ]]
++ cat /sw/BUILD/31717eb1e0eea9db0ad347699593ecbfc376bc18/O2Physics-code-check/warnings.txt
Common/Tools/PID/pidTPCModule.h:60:10: warning: inclusion of deprecated C++ header 'math.h'; consider using 'cmath' instead [modernize-deprecated-headers]
Common/Tools/PID/pidTPCModule.h:62:1: warning: nested namespaces can be concatenated [modernize-concat-nested-namespaces]
Common/Tools/PID/pidTPCModule.h:101:82: warning: implicit conversion 'int' -> 'bool' [readability-implicit-bool-conversion]
Common/Tools/PID/pidTPCModule.h:102:76: warning: implicit conversion 'int' -> 'bool' [readability-implicit-bool-conversion]
Common/Tools/PID/pidTPCModule.h:107:94: warning: implicit conversion 'int' -> 'bool' [readability-implicit-bool-conversion]
Common/Tools/PID/pidTPCModule.h:179:5: warning: do not declare C-style arrays, use 'std::array' instead [modernize-avoid-c-arrays]
Common/Tools/PID/pidTPCModule.h:188:28: warning: 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]
Common/Tools/PID/pidTPCModule.h:225:15: warning: redundant string initialization [readability-redundant-string-init]
Common/Tools/PID/pidTPCModule.h:271:13: warning: do not use 'compare' to test equality of strings; use the string equality operator instead [readability-string-compare]
Common/Tools/PID/pidTPCModule.h:275:17: warning: do not use 'compare' to test equality of strings; use the string equality operator instead [readability-string-compare]
Common/Tools/PID/pidTPCModule.h:288:15: warning: do not use 'compare' to test equality of strings; use the string equality operator instead [readability-string-compare]
Common/Tools/PID/pidTPCModule.h:351:9: warning: the 'empty' method should be used to check for emptiness instead of comparing to an empty object [readability-container-size-empty]
Common/Tools/PID/pidTPCModule.h:409:7: warning: do not use 'else' after 'return' [readability-else-after-return]
Common/Tools/PID/pidTPCModule.h:418:191: warning: use nullptr [modernize-use-nullptr]
Common/Tools/PID/pidTPCModule.h:418:241: warning: use nullptr [modernize-use-nullptr]
Common/Tools/PID/pidTPCModule.h:427:15: warning: the 'empty' method should be used to check for emptiness instead of comparing to an empty object [readability-container-size-empty]
Common/Tools/PID/pidTPCModule.h:457:13: warning: the 'empty' method should be used to check for emptiness instead of comparing to an empty object [readability-container-size-empty]
Common/Tools/PID/pidTPCModule.h:493:189: warning: use nullptr [modernize-use-nullptr]
Common/Tools/PID/pidTPCModule.h:493:239: warning: use nullptr [modernize-use-nullptr]
Common/Tools/PID/pidTPCModule.h:524:11: warning: do not use 'compare' to test equality of strings; use the string equality operator instead [readability-string-compare]
Common/Tools/PID/pidTPCModule.h:532:9: warning: do not use 'compare' to test equality of strings; use the string equality operator instead [readability-string-compare]
Common/Tools/PID/pidTPCModule.h:634:20: warning: statement should be inside braces [readability-braces-around-statements]
Common/Tools/PID/pidTPCModule.h:636:20: warning: statement should be inside braces [readability-braces-around-statements]
Common/Tools/PID/pidTPCModule.h:642:22: warning: statement should be inside braces [readability-braces-around-statements]
Common/Tools/PID/pidTPCModule.h:644:22: warning: statement should be inside braces [readability-braces-around-statements]
Common/Tools/PID/pidTPCModule.h:652:20: warning: statement should be inside braces [readability-braces-around-statements]
Common/Tools/PID/pidTPCModule.h:654:20: warning: statement should be inside braces [readability-braces-around-statements]
Common/Tools/PID/pidTPCModule.h:686:18: warning: statement should be inside braces [readability-braces-around-statements]
Common/Tools/PID/pidTPCModule.h:688:18: warning: statement should be inside braces [readability-braces-around-statements]
Common/Tools/PID/pidTPCModule.h:779:13: warning: do not use 'compare' to test equality of strings; use the string equality operator instead [readability-string-compare]
Common/Tools/PID/pidTPCModule.h:787:11: warning: do not use 'compare' to test equality of strings; use the string equality operator instead [readability-string-compare]
Common/Tools/PID/pidTPCModule.h:817:16: warning: variable 'hadronicRate' is not initialized [cppcoreguidelines-init-variables]
Common/Tools/PID/pidTPCModule.h:818:13: warning: variable 'occupancy' is not initialized [cppcoreguidelines-init-variables]
Common/Tools/PID/pidTPCModule.h:838:39: warning: statement should be inside braces [readability-braces-around-statements]
Common/Tools/PID/pidTPCModule.h:840:31: warning: statement should be inside braces [readability-braces-around-statements]
Common/Tools/PID/pidTPCModule.h:849:38: warning: statement should be inside braces [readability-braces-around-statements]
Common/Tools/PID/pidTPCModule.h:851:43: warning: statement should be inside braces [readability-braces-around-statements]
Common/Tools/PID/pidTPCModule.h:863:39: warning: statement should be inside braces [readability-braces-around-statements]
[0 more errors; see full log]

Full log here.