docs(android): add full trusted-devices/MFA smoke-test walkthrough frames

Supplements the five curated highlights (docs#34) with the remaining
distinct frames from the same live smoke-test session, in flow order:
home/connected, signed-out + signed-in drawers, login + empty 2FA step,
account overview, recovery-codes pre-generate, and the untrust-all to
empty-list to TOTP-required-again sequence. Extends the screenshots
README with a walkthrough table.

Excludes the raws superseded by the five highlights and pure automation
artifacts (soft-keyboard popups, mid-transition spinners, duplicate Home
landings) that do not represent a distinct app state.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NgyHnrNa8WwG3doxvxjuCr

android/screenshots/README.md

@@ -27,3 +27,23 @@ the canonical contract.
    password-only sign-in correctly required the TOTP step again (server: `401`).
 5. **Recovery codes** — generate (password step-up, shown once) and a successful
    **recovery-code login** (server: `mobile login via recovery code` → `200`).
+
+## Full step-by-step walkthrough
+
+The five images above are the curated highlights. These `walkthrough-*` frames are the
+rest of the same smoke-test session, in flow order, for a complete record. (Pure
+automation-artifact frames — soft-keyboard popups, mid-transition spinners, and
+duplicate Home landings — are omitted; the raws that the highlights above supersede are
+not repeated here.)
+
+| # | Screenshot | Shows |
+|---|---|---|
+| 1 | [`walkthrough-01-home-connected.png`](walkthrough-01-home-connected.png) | Home with the shard **Online** (already connected to the local server), signed out. |
+| 2 | [`walkthrough-02-drawer-signed-out.png`](walkthrough-02-drawer-signed-out.png) | Navigation drawer while signed out — **Sign in** entry. |
+| 3 | [`walkthrough-03-login-screen.png`](walkthrough-03-login-screen.png) | The native login screen (no SSO providers configured in dev). |
+| 4 | [`walkthrough-04-login-2fa-step.png`](walkthrough-04-login-2fa-step.png) | The `401 { totpRequired }` step with the fields empty — the **"Use a recovery code instead"** toggle and **"Trust this device"** checkbox before entry (companion to highlight #1, which shows them filled). |
+| 5 | [`walkthrough-05-drawer-signed-in.png`](walkthrough-05-drawer-signed-in.png) | Drawer once signed in — **My account**, Notifications, player groups, **Sign out**. |
+| 6 | [`walkthrough-06-account-overview.png`](walkthrough-06-account-overview.png) | Top of the account screen: identity, username/password, **two-factor ENABLED**. |
+| 7 | [`walkthrough-07-recovery-codes-before-generate.png`](walkthrough-07-recovery-codes-before-generate.png) | Recovery Codes screen before generating — **0 codes remaining** + the password-step-up form. |
+| 8 | [`walkthrough-08-trusted-devices-empty-after-untrust.png`](walkthrough-08-trusted-devices-empty-after-untrust.png) | Trusted Devices after **Untrust all** — "All devices untrusted." and the empty state. |
+| 9 | [`walkthrough-09-login-2fa-required-after-untrust.png`](walkthrough-09-login-2fa-required-after-untrust.png) | The next sign-in **re-prompting for the TOTP step** — proof that untrust-all cleared the local trust token. |