Merge upstream origin/main (v2.60.0) with fork customizations preserved

Incorporates 78 upstream commits while preserving all local fork intent:
- Keep deleted: dhh-rails, kieran-rails, dspy-ruby, andrew-kane-gem-writer (FastAPI pivot)
- Merge both: ce-review (zip-agent-validator + design-conformance-reviewer wiring),
  kieran-python-reviewer (upstream pipeline + FastAPI conventions),
  ce-brainstorm/ce-plan/ce-work (upstream improvements + deploy wiring checks),
  todo-create (upstream template refs + assessment block),
  best-practices-researcher (upstream rename + FastAPI refs)
- Accept remote: 142 remote-only files, plugin.json, README.md
- Keep local: 71 local-only files (custom agents, skills, commands, voice)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

plugins/compound-engineering/skills/ce-brainstorm/SKILL.md

@@ -148,6 +148,8 @@ For each approach, provide:
 
 Lead with your recommendation and explain why. Prefer simpler solutions when added complexity creates real carrying cost, but do not reject low-cost, high-value polish just because it is not strictly necessary.
 
+**Deploy wiring flag:** If any approach introduces new backend env vars or config fields, call this out explicitly in the approach description. Deploy values files (e.g. `values.yaml`, `.env.*`, Terraform vars) must be updated alongside the config code — not as a follow-up. This is a hard-won lesson; see `docs/solutions/deployment-issues/missing-env-vars-in-values-yaml.md`.
+
 If one approach is clearly best and alternatives are not meaningful, skip the menu and state the recommendation directly.
 
 If relevant, call out whether the choice is: