Release 3.4.2: simpler delegation, dependable results, self-contained setup

[ajhcs]

Co-Engineer 3.4.2 makes ordinary delegation a small semantic request, remembers explicitly approved repository/provider access, and returns provider results through one durable lifecycle. It also fixes Grok final-response framing, Cursor result/permission handling, and Muse's OpenRouter route.

Installation now includes the MIT-licensed Worktree Bootstrap 1.1.0 executable with recorded provenance and early Node/Python prerequisite checks. The README leads with setup and first use; detailed release notes cover behavior, migration, and supported limits. Model coordination stays optional and user-selected.

The candidate reconciles the published 3.4.0 baseline with the accepted local changes. Published modules, historical notes, and contract suites are retained and protected by release inventory checks.

Validation on f57ae017bb8216bbe21a52b71a289149ef3a240f:

• All 14 exact-candidate gate stages passed on the first attempt: 2,222 Co-Engineer tests, 122 Cursor compatibility tests, 7 provenance tests, 2 reproducibility tests, Inspector, local process/environment boundaries, and package inventories.
• Bundled-tool lifecycle passed with only Git and Python on PATH: create, locked verification, handoff, and released lock.
• Fresh candidate MCP process completed two Grok assignments (exact text and JSON) and one Muse/OpenRouter JSON assignment. All reused actual remembered consent without a form and ended with empty process boundaries and released locks.
• Desktop/mobile README preview: no page overflow or broken local images; documentation links, packaged mirrors, and approved image inventories passed.

Current-candidate live evidence covers Grok and Muse on Linux; earlier Cursor/native-host acceptance remains scoped to its tested candidates. No universal platform or native-subagent token-parity claim. Private live receipts and machine configuration remain outside the repository.