docs: amend v1.0.6.2 CHANGELOG + item G recovery endpoint

CHANGELOG v1.0.6.2 block now documents the distribution-handler
propagate fix as part of the release (applied in commit 26cb52333
before re-tagging). v1.0.7 item G acceptance gains a recovery
endpoint requirement so the "complete payment" error message has a
real target rather than leaving users stuck.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -34,6 +34,12 @@ and anything added later) route through it.
   * `Subscribe` and `subscribeToFreePlan` also treat the new error as
     "no existing active subscription" so a user can re-subscribe
     cleanly once migration 980 has voided their fantôme row.
+  * `distribution.checkEligibility` propagates
+    `ErrSubscriptionNoPayment` instead of swallowing it as a generic
+    ineligible; the distribution handler surfaces a specific 403
+    message ("Your subscription is not linked to a payment.
+    Complete payment to enable distribution.") so an honest-path user
+    isn't told to "upgrade their plan" when they already have one.
   * Migration `980_void_unpaid_subscriptions.sql` sweeps all
     pre-v1.0.6.2 fantôme rows into `status='expired'`, capturing the
     `(subscription_id, user_id, plan_id, previous_status)` tuple in a

docs/audit-2026-04/v107-plan.md

@@ -236,6 +236,14 @@ Acceptance:
 - `GET /me/subscription` handles `pending_payment` explicitly —
   returns `status: pending_payment`, `client_secret` echoed back so
   the frontend can resume a stalled flow.
+- **Recovery endpoint** `POST /api/v1/subscriptions/complete/:id`
+  (or reuse the existing Subscribe response's `client_secret`) that
+  the frontend can route the user to when the distribution handler
+  returns the "complete payment" message. Without a real endpoint,
+  the v1.0.6.2 error message is a dead end for users who landed in
+  fantôme state via a broken flow (no payment method saved, network
+  error mid-confirmation, etc.). Document the target route the
+  frontend should redirect to in the handler response payload.
 - `distribution.checkEligibility` treats `pending_payment` as
   ineligible (same as the v1.0.6.2 `ErrSubscriptionNoPayment` path).
 - Remove the TODO(v1.0.7-item-G) annotation; remove the v1.0.6.2