Implement minimal settings-update buffer reuse by replacing local temporary value buffer with global cMsg

[Copilot]

• Inspect branch delta to identify remaining non-functional merge-conflict files
• Restore src/OTGW-firmware/version.h to the branch-start state
• Restore src/OTGW-firmware/data/version.hash to the branch-start state
• Verify targeted validation passes after restoration (python evaluate.py --quick)
• Commit/push cleanup and reply to actionable question with findings

Original prompt

If you looked at issue 143. Come up with a plan. Make sure to minimize buffer creation. Just use all global setting buffers.

Make a set of scenarios to present to me and let me pick which one will work best.

Have a look at relevant ADRs before planning.

Custom agent used: C++ Expert
Provide expert C++ software engineering guidance using modern C++ and industry best practices.

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[Copilot]

Copilot wasn't able to review any files in this pull request.

[rvdbreemen]

@copilot Can you fix this PR as I moved it to another branch?

[Copilot]

@copilot Can you fix this PR as I moved it to another branch?

Fixed on the moved branch. I applied the minimal code change in postSettings() to reuse the global cMsg buffer (no local newValue buffer), and pushed commit 752ee25.

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[rvdbreemen]

@copilot fix the merge conflicts. If the version files are the problem. Just drop the ci version.h file.

[Copilot]

@copilot fix the merge conflicts. If the version files are the problem. Just drop the ci version.h file.

Done — I dropped the CI-generated version.h update to reduce merge-conflict risk and pushed commit a76144c. There are no UI changes in this fix, so no screenshot is applicable.

[rvdbreemen]

@copilot resolve merge conflicts by dropping ci artifact version.h and version.hash. And use the latest README.

[Copilot]

@copilot resolve merge conflicts by dropping ci artifact version.h and version.hash. And use the latest README.

Done in commit f13d9bf: I kept the latest README.md from this branch, dropped src/OTGW-firmware/data/version.hash, and restored src/OTGW-firmware/version.h so the branch remains build/evaluation clean.
Screenshot: N/A (no UI changes in this conflict-resolution fix).

[rvdbreemen]

@Copilot there seems to be a merge conflict. Please go do your utmost best to resolve it and then commit the changes. So I can merge it upstream.

[Copilot]

@Copilot there seems to be a merge conflict. Please go do your utmost best to resolve it and then commit the changes. So I can merge it upstream.

Resolved with commit a545bbf. I removed the latest CI-generated version.h churn so the branch only contains the functional settings-buffer fix plus earlier conflict cleanup, which should minimize merge conflicts upstream. Screenshot: N/A (no UI changes).

[rvdbreemen]

@claude did the merge issue

[rvdbreemen]

@copilot why can I not merge?

[Copilot]

@copilot why can I not merge?

Most likely because the PR had extra version-artifact churn causing conflicts (version.h / version.hash). I cleaned that up in commit a08d362; the branch now only changes /home/runner/work/OTGW-firmware/OTGW-firmware/src/OTGW-firmware/restAPI.ino, so it should be much easier to merge upstream. Screenshot: N/A (no UI changes).