docs(ecr,ecs): catch up website + cross-service matrix

[vieiralucas]

Summary

ECR and ECS shipped weeks ago but the website lagged on a few non-code spots. This PR catches them up:

• New website/content/docs/services/ecr.md — full ECR service page (58 ops, real OCI v2 push/pull, lifecycle eval, cosign signature verification, cross-service ties).
• New website/content/local-ecs.md — slug-exact landing page mirroring local-ecr.md for the "local ecs" search funnel.
• Refreshed website/content/docs/services/_index.md — bumped 22 -> 25 services and 1,668 -> 1,798 ops; added ECR + ECS rows; brought KMS / IAM / receipt-rule / Cognito / RDS notes in line with shipped behavior.
• Refreshed website/content/docs/services/ecs.md — dropped the stale Roadmap section (Batch 4 already shipped); removed (Batch 2/3) subhead suffixes and (later) hint; everything on the page is shipped behavior now.
• Extended website/content/docs/guides/cross-service-integration.md — added the ECS -> ECR, ECS awslogs -> Logs, ECS task secrets -> Secrets/SSM, ECS task role -> IAM credentials, ECR signing -> KMS bullets that the runtime executes today but the matrix didn't surface.

Test plan

• zola build succeeds; new ECR + local-ecs pages render at /docs/services/ecr/ and /local-ecs/.
• Pre-existing broken external links in unrelated blog posts not touched (per feedback_no_blogpost_updates).

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Summary by cubic

Catches the website up to shipped ECR and ECS features. Adds a full ECR docs page, a “local ECS” landing page, and updates the cross-service matrix and services index to match current behavior.

• New Features

  • New ECR service page with 58 ops, real OCI v2 push/pull, lifecycle eval, and cosign signature verification.
  • New “local ECS” landing page (/local-ecs/) mirroring local-ecr.md for search traffic.
  • Cross-service matrix now includes ECS→ECR image resolution, awslogs→Logs, ECS task secrets (Secrets/SSM), ECS task role credentials, and ECR signing→KMS.

• Refactors

  • Services index updated: 22 → 25 services and 1,668 → 1,798 ops; added ECR/ECS rows and aligned KMS/IAM/SES/Cognito/RDS notes with shipped behavior.
  • ECS service page refreshed: removed stale roadmap and batch labels; page now reflects fully shipped behavior.

^{Written for commit f96f37d. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 5 files

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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