Add /imupdate release knowledge workflow

[zuiho-kai]

Summary

Add three deliberate update paths:

1. /imupdate <local-git-path> [target] — derive the old SHA from the baseline, default the new SHA to checkout HEAD, run deterministic audit, let the host model update evidence-backed facts, then enforce.
2. /imupdate <repository-name-or-alias-or-url> [target] — let the host model resolve the canonical repository and version, prefer a configured or temporary checkout, then enter the same machine-audit path. If machine audit is unavailable, report model-only analysis and never claim CLEAN.
3. python tools/audit_vllm_omni_release.py --from ... --to ... --repo ... — keep the original pure machine-rule interface with no LLM and no file edits.

Known aliases vllm-omni, vllmomni, and vllm omni resolve to vllm-project/vllm-omni. Target selection refuses silent downgrades when GitHub's latest stable release is older than an already-audited prerelease.

The portable installer introduced by #29 now installs all bundled skills for Codex, Claude Code, and Cursor instead of hard-coding only imreview.

Validation

• focused installer/release/adapter/routing/knowledge/skill/capability tests — 59 passed
• quick_validate.py plugins/infermatrix-copilot/skills/imupdate — valid
• Ruff check and format check passed
• knowledge tree — 0 errors; wiki lint — 0 errors, 0 warnings
• plugin manifests parse as valid JSON
• real local-path resolution: baseline 807db6ef to D:\omni\vllm-omni checkout HEAD 0c88f8a0, 414 changed paths and 15 drift issues reported
• real alias identity check: vllmomni maps to authoritative vllm-project/vllm-omni metadata and the local checkout remote matches https://github.com/vllm-project/vllm-omni.git
• GitHub Actions release audit — passed

This is a UX follow-up to the already-merged #30.

[gemini-code-assist]

Caution

The consumer version of Gemini Code Assist on GitHub has been sunset. All code review activity has officially ceased.

[gemini-code-assist]

Caution

The consumer version of Gemini Code Assist on GitHub has been sunset. All code review activity has officially ceased.

[gemini-code-assist]

Caution

The consumer version of Gemini Code Assist on GitHub has been sunset. All code review activity has officially ceased.