feat(site): Mitos vs CubeSandbox comparison page

[stubbi]

What

Adds CubeSandbox (TencentCloud, Apache-2.0, open-sourced April 2026) as a competitor entry in src/data/competitors.ts, generating /compare/cubesandbox and its card on /alternatives.

Positioning notes

• Opens and closes on the outcome we own: a warm fleet forked from one running machine. CubeCoW is snapshot/clone/rollback from saved state, not a live fork; stated factually.
• Ties conceded fast: both Apache 2.0, both own-kernel microVMs.
• Wins: live fork of running memory, Kubernetes-native CRDs vs their standalone control plane (own scheduler, node agents, Redis state store), Firecracker production pedigree vs a new RustVMM-based VMM, reproducible benchmarks vs vendor charts.
• Their numbers are labeled as their figures (sub-60 ms cold start, hundred-millisecond clone); ours stay the reproducible ~27 ms / ~3 MiB set. Nothing fabricated.

Verification

• npm run build: 38 pages, dist/compare/cubesandbox.html generated, listed on /alternatives.
• npm test green; no em or en dashes in the copy.

Related: mitos-run/mitos#658 and mitos-run/mitos#659 came out of the same competitor teardown.

🤖 Generated with Claude Code

Summary by CodeRabbit

• New Features
  • Added a new competitor comparison page for CubeSandbox, including overview copy, feature comparisons, and FAQs.
  • Expanded the comparison content to highlight how CubeSandbox differs in cloning and isolation approaches.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: 50ee9019-8c06-4b7b-a826-13334afa0654

📥 Commits

Reviewing files that changed from the base of the PR and between ed4a944 and d012b77.

📒 Files selected for processing (1)

• src/data/competitors.ts

---

📝 Walkthrough

Walkthrough

A new CubeSandbox entry was added to the competitors array in src/data/competitors.ts, including metadata fields, comparison rows, sections, mitosWins statements, and FAQs describing differences between CubeSandbox and Mitos.

Changes

CubeSandbox competitor data

Layer / File(s)	Summary
CubeSandbox competitor entry src/data/competitors.ts	New CubeSandbox object added to competitors array with metadata, comparison rows, sections, mitosWins statements, and FAQs contrasting snapshot cloning vs. live fork approaches.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Possibly related issues

• SEO comparison cluster: self-hosted E2B / open-source Daytona and Morph alternative #50: Requests extending the competitors comparison system with new alternative pages, which this PR fulfills by adding the CubeSandbox entry.

🚥 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: adding a Mitos vs CubeSandbox comparison page.
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 docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/compare-cubesandbox

---

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

[greptile-apps]

Greptile Summary

This PR adds CubeSandbox to the competitor comparison data. The main changes are:

• Adds a cubesandbox competitor entry in src/data/competitors.ts.
• Provides copy for the /compare/cubesandbox page.
• Adds comparison rows, sections, wins, and FAQs used by the existing alternatives and comparison templates.

Confidence Score: 5/5

Safe to merge with minimal risk.

The change is a single data-only addition that follows the existing Competitor shape and uses valid row/cell values.

No files require special attention.

T-Rex Logs

What T-Rex did

• Validated the CubeSandbox compare-page flow; the path moved from a 404 Page not found to a 200 response, the title updated to 'Mitos vs CubeSandbox: live fork vs snapshot clones', and the CubeSandbox comparison UI rendered; no contract mismatch was found for the stated validation objective.
• Validated the alternatives flow by comparing the base capture (found=0, linkCount=0) with the head capture (found=1, linkCount=1) and confirmed all requested blurb checks passed.

_{Ran code and verified through T-Rex}

Important Files Changed

Filename	Overview
src/data/competitors.ts	Adds a complete CubeSandbox competitor entry for the existing data-driven comparison and alternatives pages.

_{Reviews (1): Last reviewed commit: "feat(site): Mitos vs CubeSandbox compari..." | Re-trigger Greptile}