VS Code 1.123 — Agent Session Sync and 1M Context
June 2026 update centered on agent workflows. Session sync uploads chat to GitHub account — searchable history across machines. Each session captures conversation, files touched, repo/branch context, PRs/issues/commits.
Chronicle commands (/chronicle) for standup reports, productivity tips, history search. Enabled via chat.sessionSync.enabled (on by default). Sessions private unless shared. Exclude repos via chat.sessionSync.excludeRepositories.
1M-token context for compatible Anthropic and OpenAI models. Agents window supports side-by-side sessions. Research Agent preview. Two-hour delay on auto-install of newly published extensions.