plan-proposal

plan-proposal

Orchestrates the planning phase of an OpenSpec change on develop. Composes existing skills — it does not reimplement them. Twin of ship-it, which owns the implementation phase inside the worktree. The two split at the git-worktree boundary, which is also the interactive/headless line.

flowchart LR
  subgraph Planning ["PLANNING — develop, human present"]
    A["new/ff/continue"] --> B["doubt-review"]
    B --> C["scenario-design + category-fold + manifest"]
    C --> D["plan-proposal (this skill)"]
  end
  D -->|"boundary: commit + spawn worktree"| E["ship-it"]
  subgraph Implementation ["IMPLEMENTATION — worktree"]
    E
  end

Hard constraint — main session only (never a subagent)

plan-proposal MUST run in the main interactive session. It invokes doubt-driven-review (which spawns a fresh-context reviewer, and interactively a second cross-model reviewer — nested subagent spawn is blocked) and scenario-design (whose proposal/design-stage HARD gate calls ask_user). Both need a live main session.

Guard: if you detect you are running inside a subagent context (nested reviewer spawn would be blocked, or ask_user is unavailable), STOP and surface: "plan-proposal must run in the main session — doubt-review and the scenario-design gate cannot run nested. Re-invoke from the main session on develop." Do not degrade the doubt-review to a self-questioning fallback.

Preconditions

• On the develop branch (planning happens on develop; the worktree is spawned from the planning commit).
• openspec CLI available; resolve the change name from --change <name>, the conversation, or openspec list --json (ask if ambiguous).
• Announce: "Planning change: <change> (override with /plan-proposal <other>)."

Procedure

1. Ensure planning artifacts exist

Bring the change to a drafted state using the existing generated skills — do not hand-roll the directory:

• No change dir yet → openspec-new-change (or -ff for the fast path).
• Partial artifacts → openspec-continue-change.