feat(workflows): promote reusable spec-review checks from emacs-d review passes

I folded the reusable, product-neutral checks from two emacs-d review passes into the canonical spec-review.org, so they survive the startup rsync and reach every project instead of living only in a downstream copy. The additions cover package-readiness and Makefile scope, actionable error strings, observability and diagnostics, long-running performance and failure-mode research, defcustom surface, a documentation plan, architecture weak-point mitigation, simplicity controls, extension/plugin developer experience, comparable-product sentiment, terminal-state discovery, CLI-wrapper value, and rollout/rollback, plus three reviewer principles and a generalizable-question harvesting rule.

The promotion is a pure superset. Every change adds or expands a generic check, nothing regresses. Project-specific findings stayed in the source spec. The handoff that asked for this is preserved under docs/design.

0 files changed, 0 insertions, 0 deletions