DPL: add MCP server for DPL

[ktf]

Allows debugging a DPL workflow using Claude, ChatGPT or
similar tools.

[github-actions]

REQUEST FOR PRODUCTION RELEASES:
To request your PR to be included in production software, please add the corresponding labels called "async-" to your PR. Add the labels directly (if you have the permissions) or add a comment of the form (note that labels are separated by a ",")

+async-label <label1>, <label2>, !<label3> ...

This will add <label1> and <label2> and removes <label3>.

The following labels are available
async-2023-pbpb-apass4
async-2023-pp-apass4
async-2024-pp-apass1
async-2022-pp-apass7
async-2024-pp-cpass0
async-2024-PbPb-apass1
async-2024-ppRef-apass1
async-2024-PbPb-apass2
async-2023-PbPb-apass5

[ktf]

I for one welcome our new AI overlords.

[alibuild]

Error while checking build/O2/fullCI_slc9 for c04a597 at 2026-03-31 18:40:

## sw/BUILD/o2checkcode-latest/log
--
========== List of errors found ==========
++ GRERR=0
++ grep -v clang-diagnostic-error error-log.txt
++ grep ' error:'
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Framework/Core/src/StatusWebSocketHandler.cxx:159:37: error: statement should be inside braces [readability-braces-around-statements]
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Framework/Core/src/StatusWebSocketHandler.cxx:161:39: error: statement should be inside braces [readability-braces-around-statements]
++ [[ 0 == 0 ]]
++ exit 1
--

Full log here.

[alibuild]

Error while checking build/O2/fullCI_slc9 for 84a0335 at 2026-04-01 00:14:

++ cp /sw/slc9_x86-64/O2/slc9_x86-64-slc9_x86-64-local4/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")]))'
++ O2_SRC=/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0
++ [[ -e /sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/CMakeLists.txt ]]

Full log here.

[ktf]

@costing @davidrohr @shahor02 the error seems to be related to:

[9106:internal-dpl-ccdb-backend]: [21:53:05][ERROR] File PHS/BadMap/Occ could not be retrieved. No more hosts to try.
[9106:internal-dpl-ccdb-backend]: [21:53:05][FATAL] Unable to find CCDB object PHS/BadMap/Occ/1550600800023

is this a glitch in CCDB or something to investigate? I am restarting the tests.

[shahor02]

Should be a glitch, the object is there and accessible: https://alice-ccdb.cern.ch/browse/PHS/BadMap/Occ/1550600800023

[ktf]

Yes, there is apparently some weird interplay between some of the CCDB servers and the new libwebsocket.

[ktf]

Issue with CCDB understood. The new libwebsocket introduced yesterday triggers a bug in jalien-root. Workedaround by reverting to the old version in alisw/alidist#6200. A proper fix will be done separately in JAliEn-ROOT. Retriggering the fullCI test.