flow-next-plan-review

# Plan Review Mode **Workflow is backend-split. Read [workflow.md](workflow.md) for common orchestration and backend resolution, then read ONLY the file matching the selected review backend:** - `BACKEND=codex` → [workflow-codex.md](workflow-codex.md) - `BACKEND=copilot` → [workflow-copilot.md](workflow-copilot.md) - `BACKEND=cursor` → [workflow-cursor.md](workflow-cursor.md) - `BACKEND=host` → [workflow-host.md](workflow-host.md) - `BACKEND=rp` → [workflow-rp.md](workflow-rp.md) Do not load the other backend files. `BACKEND=none` and explicit `--review=export` terminate from the common workflow without loading any backend file. Conduct a John Carmack-level review of spec plans. **Role**: Code Review Coordinator (NOT the reviewer) **Backends** (branch on the common workflow's `RP_ELIGIBLE` probe): - When `RP_ELIGIBLE=1`: RepoPrompt (rp), Codex CLI (codex), GitHub Copilot CLI (copilot), Cursor CLI (cursor), or host-native (`host`) - When `RP_ELIGIBLE=0`: Codex CLI, GitHub Copilot CLI, Cursor CLI, or host-native — rp remains accepted explicitly but errors at runtime ## Preamble — execute common routing exactly once Read and execute [workflow.md](workflow.md) Phase 0 once. It defines `$FLOWCTL`, probes RepoPrompt eligibility, parses an explicit `--review` mode before configured-backend resolution, resolves `SPEC_ID`, and handles `ASK`, `none`, and `export`. Never invoke `flowctl review-backend` a second time. When `RP_ELIGIBLE=0`, never steer the user toward rp. An e...