SSBC-EM3.6: Last lower-risk required features changes

Created by: eseliger

14d

• Erik's API overhaul 5d @eseliger
  • #33397
• Infrastructure: #35981 (closed) 4d @BolajiOlajide
• Details page: https://github.com/sourcegraph/sourcegraph/issues/36020 1d @BolajiOlajide
• #36364 (closed)
• Release prep: #26144 (closed) 3d @BolajiOlajide
• [Stretch] Docs: In-app banner describing and welcoming to SSBC 1d
  • Design: #31425

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Non-engineering

• Docs: #21553 (closed)
• Figure out customer support strategy