feat: [DPS-36767] - Embedded metrics dashboard as contextual view in stream

[kagora-akamai]

Description 📝

New Metrics tab under Stream view.

Changes 🔄

• Stream view is now divided into Summary (prev. Edit) and Metrics tabs
• Embedded Metrics component inside Stream Metrics tab
• Routing for streams/$id/edit changed to streams/$id/summary
• Routing for destinations/$id/edit changed to destinations/$id/summary
• Routing for streams/$id redirects to streams/$id/summary
• Routing for destinations/$id redirects to destinations/$id/summary
• New routing streams/$id/metrics to stream metrics tab

Scope 🚢

Upon production release, changes in this PR will be visible to:

• Some customers (e.g. in Beta or Limited Availability)

Target release date 🗓️

March 2026

Preview 📷

Before	After

How to test 🧪

Prerequisites

Run manager with devcloud env.

Verification steps

Navigate to some stream. See new view with 2 tabs. Dashboard loading in Metrics tab.

Author Checklists

As an Author, to speed up the review process, I considered 🤔

👀 Doing a self review
❔ Our contribution guidelines
🤏 Splitting feature into small PRs
➕ Adding a changeset
🚩 Using a feature flag to protect the release
🧪 Providing/improving test coverage
📱 Providing mobile support

• I have read and considered all applicable items listed above.

As an Author, before moving this PR from Draft to Open, I confirmed ✅

• All tests and CI checks are passing
• TypeScript compilation succeeded without errors
• Code passes all linting rules

[linode-gh-bot]

Cloud Manager UI test results

🔺 3 failing tests on test run #3 ↗︎

❌ Failing	✅ Passing	↪️ Skipped	🕐 Duration
3 Failing	885 Passing	11 Skipped	49m 54s

Details

Failing Tests
	Spec	Test
❌	alerts-create.spec.ts	Cloud Manager Cypress Tests→Create flow when beta alerts enabled by region and feature flag » create flow after switching to beta alerts
❌	alerts-create.spec.ts	Cloud Manager Cypress Tests→Create flow when beta alerts enabled by region and feature flag » can toggle from legacy to beta alerts and back to legacy
❌	object-storage-objects-multicluster.spec.ts	Cloud Manager Cypress Tests→Object Storage Multicluster objects » can upload, access, and delete objects

Troubleshooting

Use this command to re-run the failing tests:

pnpm cy:run -s "cypress/e2e/core/linodes/alerts-create.spec.ts,cypress/e2e/core/objectStorageMulticluster/object-storage-objects-multicluster.spec.ts"