Two e2e tests:
- test_blueprint_autocomplete_accept_writes_into_hidden_textarea:
loads /blueprints/1, types 'sv_che', asserts the cm6 autocomplete
popup shows 'sv_cheats', presses Tab to accept, fires a synthetic
submit on the form, and reads the hidden textarea value back.
Exercises both the autocomplete extension and the submit-time copy
bridge in editor.js end-to-end.
- test_copy_preserves_newlines_across_lines: regression gate for
bug class 1 from v1 (Prism+contenteditable collapsed multi-line
selections). cm6 preserves linebreaks in its doc by construction;
we verify via the per-textarea controller's getValue().
editor-entry.js: discovered during the e2e debug that cm6's default
completionKeymap does NOT bind Tab. Added an explicit
`{ key: "Tab", run: acceptCompletion }` ahead of the rest of the
keymap stack so Tab accepts when the popup is open and falls through
to indentWithTab otherwise. Bundle rebuilt + SHA refreshed.
Tests also surfaced a 200ms popup-settle timing race: the popup is
*visible* on the same tick acceptCompletion runs against null
selectedCompletion. A page.wait_for_timeout(200) before pressing
the accept key bridges the gap reliably in CI.
Chromium runs fine in Claude Code's default sandbox — the stale note
in the handoff doc about Mach-port IPC sandbox-blocking is no longer
accurate.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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