[meetshamir]

Summary

• Add BRK423 to the Ignite README table with the verified official session URL, Tuesday November 17 3:15-4:00 PM PT schedule, published speakers, and QR-left/details-right layout.
• Add local BRK423 PNG/SVG QR assets and regenerate the standalone homepage PNG/SVG QR assets for https://github.com/microsoft/sre-agent/#come-catch-us-at-microsoft-ignite-2026.
• Preserve all existing sessions and resources; do not restore the removed homepage-sharing section.

Verification

• Verified BRK423 details and headshot sources in the official Ignite browser page; no unpublished room added.
• Decoded both PNG and SVG payloads for both QR destinations.
• Checked the actual GitHub-rendered README row, loaded QR image, registration links, and Ignite anchor.
• Confirmed the diff against main contains only these five follow-up files after docs: feature SRE Agent Ignite sessions and QR codes #398 merged.

This PR is intentionally left open and unmerged.