feat: populate Open Sauce 2026 event firmware

[thebentern]

What

Fills in the Open Sauce 2026 edition's firmware and branding in data/eventFirmware.json. It shipped with null firmware (rendered as "coming soon" in the web-flasher); this makes the edition serve a flashable build.

• firmware: v2.7.26.004b486 (derived from the event/opensauce2026 branch), event-tailored release notes, and the meshtastic.github.io/event/opensauce2026/... zip URL.
• theme: name + tagline ("Where makers, science, and mesh collide.").
• iconUrl stays null — the web-flasher renders a dedicated Meshtastic × Open Sauce header lockup.

Companion to meshtastic/web-flasher#370 (which mirrors this into the bundled offline snapshot and adds the header mode). This repo is the source of truth, so this PR is what makes the branding/firmware survive the web-flasher's background API refresh.

⚠️ Before merge

The firmware hash 004b486 is the event/opensauce2026 branch HEAD, not a published artifact — the zip 404s until CI publishes to meshtastic.github.io/event/opensauce2026/. Confirm the real version/zipUrl before merging so attendees don't hit a 404.

Summary by CodeRabbit

• New Features
  • Updated the Open Sauce edition with a named theme, refreshed tagline, and fully populated firmware details.
  • Added specific version, title, download link, and release notes information for the edition.
  • Replaced placeholder values with complete metadata for a more polished experience.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 2377e4b9-76ea-48bd-bb79-2fa88bbea8c3

📥 Commits

Reviewing files that changed from the base of the PR and between 2b8606f and 145c3e7.

📒 Files selected for processing (1)

• data/eventFirmware.json

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📝 Walkthrough

Walkthrough

The OPEN_SAUCE edition entry in data/eventFirmware.json was updated to replace null placeholders with concrete values: theme name and tagline, plus firmware version, id, title, zipUrl, and releaseNotes specific to Open Sauce 2026.

Changes

Open Sauce edition metadata population

Layer / File(s)	Summary
Populate theme and firmware fields data/eventFirmware.json	OPEN_SAUCE edition's theme name/tagline and firmware version/id/title/zipUrl/releaseNotes updated from null to concrete Open Sauce 2026 values.

Estimated code review effort: 1 (Trivial) | ~3 minutes

Poem

A rabbit hops through JSON fields so bare,
Filling nulls with sauce beyond compare,
Makers & Mesh now shine so bright,
Firmware ready, zipped up tight,
Open Sauce 2026, hop with care! 🐇✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: populating the Open Sauce 2026 firmware entry with real metadata.
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.

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