Epic: APR wiring — connect repo creation to a route, scaffold it, and retire the stale transfer path

[JSONbored]

Problem

src/orb/apr-repo-creation.ts creates a repo under the customer's own GitHub account
using their own live OAuth token (POST /user/repos), per the design correction recorded
in its header (2026-07-21, decision #7590). It works and nothing calls it.

Meanwhile src/orb/apr-repo-transfer.ts (377 lines) implements transfer-to-customer and
its header still describes the superseded design: "An APR repo is created under a
loopover-controlled GitHub org (#7637) and can later be transferred… to the customer's own
account." Two incompatible models are live in the tree.

Sub-issues

• wire creation to the idea-submission route
• scaffold the created repo so the loop can run on it
• resolve the transfer path against the corrected design
• operator runbook for a live customer project

Acceptance

A submitted idea produces a scaffolded repo under the customer's own account, the tree
carries one repo-ownership model rather than two, and there is a written procedure for
running a real project on it.

[linear-code]

JSO-7083