feat: adapt to eloqstore auto config credentials

[thweetkomputer]

Here are some reminders before you submit the pull request

• Add tests for the change
• Document changes
• Reference the link of issue using fixes eloqdb/tx_service#issue_id
• Reference the link of RFC if exists
• Pass ./mtr --suite=mono_main,mono_multi,mono_basic

Summary by CodeRabbit

• New Features
  • Cloud storage credentials are now automatically detected by default, simplifying authentication.
  • A new configuration option lets operators disable automatic credential detection if desired.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between e0abd00 and a2a2d81.

📒 Files selected for processing (3)

• store_handler/eloq_data_store_service/build_eloq_store.cmake
• store_handler/eloq_data_store_service/eloq_store_config.cpp
• store_handler/eloq_data_store_service/eloqstore

🚧 Files skipped from review as they are similar to previous changes (1)

• store_handler/eloq_data_store_service/eloqstore

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Walkthrough

Added a cloud backend source to the EloqStore build, introduced a new flag and config field to control automatic cloud credential detection, and advanced the eloqstore submodule reference.

Changes

Cohort / File(s)	Summary
Build configuration store_handler/eloq_data_store_service/build_eloq_store.cmake	Added ${ELOQ_STORE_SOURCE_DIR}/src/storage/cloud_backend.cpp to ELOQ_STORE_SOURCES.
Cloud credentials configuration store_handler/eloq_data_store_service/eloq_store_config.cpp	Added DEFINE_bool(eloq_store_cloud_auto_credentials, true, ...); populated eloqstore_configs_.cloud_auto_credentials from the flag or config reader during EloqStoreConfig init.
Submodule update store_handler/eloq_data_store_service/eloqstore	Updated eloqstore submodule reference to a newer commit.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• adapt to new parameters and add new dependencies #268: Changes the same build and config files to add cloud backend source and config wiring.
• chore: update submodule eloqstore and add new parameters to eloq_store_config #370: Updates build sources and eloq_store configuration for cloud integration.
• Adapt to submodule rearragement #335: Modifies build_eloq_store.cmake and ELOQ_STORE_SOURCES to include cloud backend.

Suggested reviewers

• lzxddz
• liunyl

Poem

🥕 I hopped through code and found a cloud,
I nudged a file and added a shroud.
A flag to seek credentials on its own,
A submodule bumped, a newer tone.
Happy hops — the store now knows the zone!

🚥 Pre-merge checks | ✅ 1 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The PR description contains only an empty checklist template without actual implementation details, issue references, or information about the changes made.	Add meaningful description of changes, reference related issue(s), note any RFC, and confirm test suite results. The checklist items should be marked as completed, not left as a template.
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (1 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'feat: adapt to eloqstore auto config credentials' directly and specifically summarizes the main change in the PR, which introduces auto credentials configuration support for eloqstore.

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✨ Finishing Touches

• 📝 Generate docstrings (stacked PR)
• 📝 Generate docstrings (commit on current branch)

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feat-eloqstore-auto-config

---

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@store_handler/eloq_data_store_service/eloqstore`:
- Line 1: The PR references an unreachable submodule commit
3330d481ba5544fb4cf894ae852fe41256abeaed for the
eloq_store_cloud_auto_credentials change; update the submodule pointer in the
repository (via .gitmodules and the gitlink) to a reachable commit or a branch
HEAD in the submodule repo and run git submodule sync && git submodule update
--init --recursive to ensure the commit exists locally before merging. Also add
tests and docs for the new eloq_store_cloud_auto_credentials feature to satisfy
the PR checklist: create/enable mtr tests that cover the feature (so they pass
./mtr --suite=mono_main,mono_multi,mono_basic) and add a documentation entry
describing usage and configuration for eloq_store_cloud_auto_credentials.

---

ℹ️ Review info

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 65caaad and 02a847c.

📒 Files selected for processing (3)

• store_handler/eloq_data_store_service/build_eloq_store.cmake
• store_handler/eloq_data_store_service/eloq_store_config.cpp
• store_handler/eloq_data_store_service/eloqstore