M9: monetisation decision - one-time paid, no billing code, verified in release APK

README.md

@@ -12,10 +12,10 @@ no advertising or tracking SDKs.
 
 ## Status
 
-**M8 — localisation groundwork: done.** Every user-visible string is in resources with real
-plurals, the audit's one genuine miss (the details sheet showing an enum name) is fixed, and
-the debug build's pseudo-locale makes the check mechanical. See the README's *Localisation*
-section.
+**M9 — monetisation: done.** One-time paid at €4.49 (€2.29 for the first 14 days), set in
+the Play Console — so the APK carries no Billing client and no `BILLING` permission, which
+keeps the offline claim true of the shipped artefact. See
+[docs/MONETISATION.md](docs/MONETISATION.md).
 
 ## Tech stack
 
@@ -153,6 +153,20 @@ UI.** Translated UI text has to be supplied in `values-<locale>/`.
   [docs/EDGE_CASE_TESTING.md](docs/EDGE_CASE_TESTING.md)).
 - The display name is still the working title — decided before the first upload (M10).
 
+## Monetisation
+
+**One-time paid: €4.49 base, with a €2.29 launch price for the first 14 days.** No ads, no
+subscription, no in-app purchases, no free tier.
+
+The price lives on the Play listing, not in the build, which is why there is no Billing
+client in the dependencies and no `com.android.vending.BILLING` permission in the APK —
+that is what keeps "no network permission, nothing leaves your device" true of the
+*shipped artefact* rather than just the source. Rationale, market anchors, the rejected
+alternatives and the Console steps: [docs/MONETISATION.md](docs/MONETISATION.md).
+
+⚠️ **The price must be set before the first upload** — Play allows paid → free but never
+free → paid.
+
 ## Licence
 
 Proprietary — all rights reserved.