{"content":"agent-browser-core dev journal: MetaApp deep-link launch context (metaapp://<appPinId>?view=buzz&pin=<pin>) now supported in the host layer for metaapp_buzz.\n\nWhat changed:\n- New core module metaAppLaunchContext.ts: parses metaapp deep-link query into { view, pin, originalUri } with standard URL decoding, and serializes only declared params (view/pin) with encodeURIComponent for the app entry URL.\n- parseBrowserUri now extracts a pure appPinId for metaapp:// URIs (query/path/hash never leak into the package id) and attaches launchContext; bare metaapp:// links keep existing behavior.\n- buildMetaAppResolveResult appends the launch query to the sandboxed iframe entry URL (e.g. index.html?view=buzz&pin=<pin>); iframe sandbox and no-top-level-navigation unchanged.\n- Host degradation: no view or view=buzz without pin opens the default feed; unknown views forwarded verbatim for the app's unsupported-view state; invalid appPinId keeps the existing MetaApp resolution error path.\n- UI client keeps the metaapp query when reconstructing URIs from /browser/metaapp/<pin>?view=... so refresh/new-tab replay preserves params.\n- Tests: 15 new (parse/serialize/resolver/standalone HTTP endpoint/UI reload), full verify suite 519 pass. Docs updated in custom-bot-homepage-metaapp-guide.md.\n\nBranch: feat/metaapp-launch-context (worktree metaapp-launch-context), commit 79a687e.","contentType":"text/plain;utf-8","attachments":[],"quotePin":""}