VCO Release v2.3.55

Highlights

Promoted the unified owned-only uninstall surface into the stable release line. uninstall.sh / uninstall.ps1 now route supported hosts through the same adapter-driven contract, default to direct uninstall, and remove only content that the install ledger, host closure, or conservative legacy rules can prove belongs to Vibe.
Realigned host installs, checks, and runtime framing around explicit skill-only / sidecar-first activation. Supported hosts keep Vibe available through native skill invocation without requiring the installer to take over host-native settings in the normal path, which reduces cross-host breakage risk.
Fixed the OpenCode startup regression by preserving compatibility with pre-existing OpenCode config surfaces and narrowing the managed write surface. Managed install/update flows stop turning otherwise valid OpenCode setups into non-starting states.
Split built-in intent advice from optional vector diff embeddings into separate configuration planes: VCO_INTENT_ADVICE_* now powers the governance advice path, while VCO_VECTOR_DIFF_* remains an optional embeddings lane that degrades gracefully when missing.
Hardened macOS bootstrap compatibility. Active shell entrypoints no longer rely on Bash 4-only mapfile, and install.sh / check.sh / scripts/bootstrap/one-shot-setup.sh now fail early with a clear Python 3.10+ prerequisite message instead of surfacing misleading downstream errors.

v2.3.54 focused on release operator closure, release/install truth alignment, and uninstall-governance surfacing.
v2.3.55 moves the stable surface forward to the next set of already-merged host-safety fixes: skill-only host alignment, OpenCode startup recovery, explicit AI config-key separation, and macOS shell/bootstrap compatibility.
The main difference is not a new product lane. The difference is reduced blast radius and clearer contracts: install/uninstall now touch less host-native state, OpenCode keeps booting, AI config is less ambiguous, and macOS prerequisite failures are diagnosed at the boundary where they actually occur.

pytest -q tests/runtime_neutral/test_uninstall_vgo_adapter.py tests/runtime_neutral/test_installed_runtime_uninstall.py tests/runtime_neutral/test_installed_runtime_scripts.py -k "install_ledger or test_" -> 31 passed, 10 subtests passed
pytest -q tests/runtime_neutral/test_opencode_managed_preview.py tests/runtime_neutral/test_bootstrap_doctor.py tests/runtime_neutral/test_router_ai_connectivity_probe.py tests/runtime_neutral/test_shell_entrypoint_compatibility.py -> 18 passed
bash -n install.sh -> PASS
bash -n check.sh -> PASS
bash -n scripts/bootstrap/one-shot-setup.sh -> PASS
pwsh -NoProfile -File scripts/verify/vibe-version-consistency-gate.ps1 -> PASS
pwsh -NoProfile -File scripts/verify/vibe-dist-manifest-gate.ps1 -> PASS
pwsh -NoProfile -File scripts/verify/vibe-version-packaging-gate.ps1 -> PASS
pwsh -NoProfile -File scripts/verify/vibe-release-notes-quality-gate.ps1 -> PASS
pwsh -NoProfile -File scripts/verify/vibe-release-install-runtime-coherence-gate.ps1 -> PASS
pwsh -NoProfile -File scripts/verify/vibe-uninstall-coherence-gate.ps1 -> PASS
git diff --check -> PASS

Uninstall remains intentionally narrow. Supported uninstall flows clean only Vibe-managed payloads and shared-file vibeskills nodes; they do not claim ownership over host login state, provider secrets, or unrelated plugin configuration.
OpenCode users should treat opencode.json.example and .vibeskills/* as the Vibe-managed surface. The installer no longer needs to create or take over a real opencode.json for the supported skill-first path.
Built-in advice and vector diff embeddings now have separate local keys. Operators should migrate to VCO_INTENT_ADVICE_API_KEY / VCO_INTENT_ADVICE_MODEL for advice readiness, and add VCO_VECTOR_DIFF_API_KEY / VCO_VECTOR_DIFF_MODEL only when they want optional embeddings-backed diff retrieval.
macOS users can keep launching from the default system shell stack, but they now need a real Python 3.10+ runtime available before running the shell install/check/bootstrap entrypoints.