Improvement:Update the timeslave to comply to SCORE conventions and add full-chain demo

[gordon9901]

Summary

Replaces the raw POSIX shared memory implementation in the gPTP IPC library with score::memory::shared::SharedMemoryFactory.

This aligns gPTP IPC shared memory lifecycle management with the existing time_daemon → time IPC pattern.

The existing seqlock concurrency protocol is preserved unchanged.

A full-chain demo is also added for end-to-end validation on the target board:

fake_time_slave → demo_time_daemon → demo_app

Changes

gPTP IPC migration

• Added new package:

  score/ts_client/src/
  

• Replaces previous usage of:

  score/libTSClient/
  

• Migrated publisher and receiver shared memory handling to SharedMemoryFactory.

• Added stale artifact cleanup before shared memory creation.

• Preserved existing GptpIpcRegion and GptpIpcData structures unchanged.

• Added a new gptp_ipc BUILD target with dependency on:

  @score_baselibs//score/memory/shared
  

TimeDaemon call-site update

Updated the TimeDaemon gPTP SHM call sites to use the new package path.

Affected area:

score/TimeDaemon/code/ptp_machine/shm/

Main updates:

• BUILD dependency updates.
• Include path updates from score/libTSClient/ to score/ts_client/src/.

Build fix

Updated:

score/time_slave/src/gptp/details/BUILD

Added missing log backend dependency to related cc_test targets:

@score_baselibs//score/mw/log:console_only_backend

This fixes pre-existing linker errors unrelated to the shared memory migration.

Full-chain demo

Added demo sources under:

examples/full_chain_demo/

Included components:

• fake_time_slave.cpp

  • Simulates TimeSlave.
  • Writes gPTP IPC data periodically.

• demo_time_daemon.cpp

  • Reads gPTP shared memory.
  • Publishes SVT without lifecycle manager.

• demo_app.cpp

  • Reads SynchronizedVehicleTime from TimeDaemon.
  • BUILD target is currently commented out pending include path confirmation.

• svt_handler_shm.* / factory_shm.*

  • Reference backups for wiring GPTPShmMachine into the SVT pipeline.

Notes

• The seqlock protocol is not changed.
• Existing gPTP IPC data layout is not changed.
• Demo-related files are intended for target-board validation and integration reference.

Task:#20

[github-actions]

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[License Check Output]
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WARNING: For repository 'aspect_rules_lint', the root module requires module version aspect_rules_lint@1.5.3, but got aspect_rules_lint@2.0.0 in the resolved dependency graph. Please update the version in your MODULE.bazel or set --check_direct_dependencies=off
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INFO: Elapsed time: 39.128s, Critical Path: 2.32s
INFO: 16 processes: 12 internal, 3 processwrapper-sandbox, 1 worker.
INFO: Build completed successfully, 16 total actions
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usage: org.eclipse.dash.licenses.cli.Main [-batch <int>] [-cd <url>]
       [-confidence <int>] [-ef <url>] [-excludeSources <sources>] [-help] [-lic
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[github-actions]

The created documentation from the pull request is available at: docu-html