[CI] Run scheduled main workflow daily, skip after recent commits

[tdavidcl]

Run On Schedule every day at 02:00 UTC instead of Monday/Wednesday/Friday. Skip the CI jobs when a commit already landed on main in the last 24 hours, since On Push already covered that change. Manual workflow_dispatch still always runs.

[github-actions]

Thanks @tdavidcl for opening this PR!

You can do multiple things directly here:
1 - Comment pre-commit.ci run to run pre-commit checks.
2 - Comment pre-commit.ci autofix to apply fixes.
3 - Add label autofix.ci to fix authorship & pre-commit for every commit made.
4 - Add label full-ci to run the full test suite (default is light CI; full CI also runs on Mergify merge-queue branches).
5 - Add label trigger-ci to create an empty commit to trigger the CI.

Once the workflow completes a message will appear displaying informations related to the run.

Also the PR gets automatically reviewed by gemini, you can:
1 - Comment /gemini review to trigger a review
2 - Comment /gemini summary for a summary
3 - Tag it using @gemini-code-assist either in the PR or in review comments on files

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: fa16215d-0c71-49d4-a0f3-a193a1ded4be

📥 Commits

Reviewing files that changed from the base of the PR and between 2034ba3 and f396426.

📒 Files selected for processing (1)

• .github/workflows/on_schedule_main.yml

Included review availability: Your plan includes up to 1 review per rolling hour; 0 remain after this review.

---

📝 Walkthrough

Walkthrough

The scheduled workflow now runs daily at 02:00 UTC. A should_run job skips scheduled CI when the latest commit is less than 24 hours old. The Codecov check and main workflow run only when run_ci is true.

Changes

Scheduled CI gating

Layer / File(s)	Summary
Scheduled run decision .github/workflows/on_schedule_main.yml	The workflow runs daily and adds a should_run job. Scheduled runs use the latest commit age. Other events enable CI.
Conditional downstream execution .github/workflows/on_schedule_main.yml	The Codecov secret check and main workflow invocation depend on should_run and require run_ci to be true.

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: 🔵 Low · up to f3964

The workflow may occasionally rerun CI unnecessarily or skip scheduled CI longer than intended because it uses commit timestamp rather than landing time for the 24-hour check. The change is mergeable with explicit owner awareness or follow-up to confirm that this timestamp is an acceptable proxy.

Sequence Diagram(s)

sequenceDiagram
  participant GitHubActionsScheduler
  participant should_run
  participant CodecovSecretCheck
  participant MainWorkflow
  GitHubActionsScheduler->>should_run: Start daily scheduled workflow
  should_run->>should_run: Check latest commit age
  should_run-->>CodecovSecretCheck: Set run_ci
  should_run-->>MainWorkflow: Set run_ci
  CodecovSecretCheck->>CodecovSecretCheck: Run when run_ci is true
  MainWorkflow->>MainWorkflow: Invoke when run_ci is true

Loading

Possibly related PRs

• Shamrock-code/Shamrock#2081: Both changes modify the scheduled main workflow and its CI and Codecov handling.

Suggested labels: light-ci

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the daily schedule and recent-commit skip behavior.
Description check	✅ Passed	The description accurately explains the schedule change, skip condition, and manual workflow behavior.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

Warning

Review ran into problems

🔥 Problems

Git: Failed to clone repository. Please run the @coderabbitai full review command to re-trigger a full review. If the issue persists, set path_filters to include or exclude specific files.

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}

[github-actions]

Workflow report

workflow report corresponding to commit f396426
Commiter email is [email protected]

Light CI is enabled (the default for pull requests). This will only run the basic tests and not the full tests.
Full CI runs if the full-ci label is set, or automatically on Mergify merge-queue branches (mergify/merge-queue/*).
The merge gate job "on PR / all" is skipped in this case. Queue entry uses "on PR / all_light"; full CI runs in the merge queue.

Pre-commit check report

Pre-commit check: ✅

trim trailing whitespace.................................................Passed
fix end of files.........................................................Passed
check for merge conflicts................................................Passed
check that executables have shebangs.....................................Passed
check that scripts with shebangs are executable..........................Passed
check for added large files..............................................Passed
check for case conflicts.................................................Passed
check for broken symlinks................................................Passed
check yaml...............................................................Passed
detect private key.......................................................Passed
No-tabs checker..........................................................Passed
Tabs remover.............................................................Passed
cmake-format.............................................................Passed
Validate GitHub Workflows................................................Passed
clang-format.............................................................Passed
ruff check...............................................................Passed
ruff format..............................................................Passed
Check doxygen headers....................................................Passed
Check license headers....................................................Passed
Check #pragma once.......................................................Passed
Check SYCL #include......................................................Passed
No ssh in git submodules remote..........................................Passed
No UTF-8 in files (except for authors)...................................Passed

Test pipeline can run.

Clang-tidy diff report

No relevant changes found.
Well done!

You should now go back to your normal life and enjoy a hopefully sunny day while waiting for the review.

Doxygen diff with main

Removed warnings : 0
New warnings : 0
Warnings count : 8183 → 8183 (0.0%)

Detailed changes :

[mergify]

Queued — the merge queue status continues in this comment ↓.

[mergify]

Merge Queue Status

• ✅ Entered queue — 2026-08-17 18:59 UTC · Rule: main queue · triggered by @tdavidcl with the merge queue checkbox
• ✅ Checks passed · on draft merge queue: checking main (2034ba3) and [#2082 + #2081 + #2079] together #2084
• ✅ Merged — 2026-08-17 21:03 UTC · at f396426ef0485e7785bff0cc7a52bb4632030d24 · squash

This pull request spent 2 hours 3 minutes 46 seconds in the queue, including 1 hour 51 minutes 6 seconds running CI.

Required conditions to merge

• check-success = all