chore(release): v0.4.13 (versionCode 40) — waitlist retry queue (#166)

* chore(release): v0.4.13 (versionCode 40) — waitlist retry queue reaches users

Ships 2f81d34 (#165): failed waitlist signups are persisted on-device and
retried on app foreground instead of silently falling back to mailto.
Until this Play release, no user is running that fix.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

* fix(waitlist): stamp the app version into the mailto escape hatch

AGE-100 asks for the post-release mailto count "split by app version where the
mail body allows it". It did not allow it: the body was "Sign me up!\n\nEmail: x"
and nothing else, so a mail from an unreachable pre-v0.4.8 sideload is byte-identical
to one from a current build whose retry queue leaked. Those two readings have
opposite meanings — the first is the known permanent cohort, the second is a defect.

Now the escape hatch appends "App: OpenCode Mobile v<version>" (app.json, same
source Sentry uses). Absence of the line == pre-v0.4.13 build. waitlist.ts stays
free of react-native/JSON imports; the screen injects the version.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

---------

Co-authored-by: engineer <engineer@macbookpro.lan>
Co-authored-by: Paperclip <noreply@paperclip.ing>

distribution/whatsnew/whatsnew-en-US

@@ -1,3 +1,3 @@
-v0.4.12 — Global recent sessions
+v0.4.13 — Waitlist signups no longer get lost
 
-Recent Sessions now shows every session across all your projects automatically — no need to pick a folder or directory first. The list is populated globally as soon as you connect, and falls back to per-directory listing on older servers.
+Joining the OpenCode Connect waitlist now survives a flaky connection: a signup that fails is saved on your device and re-sent automatically the next time you open the app. The email-app fallback only opens if you choose it after repeated retries.