chore: bump version to 0.7.1 + v0.7.1 release notes

Bumps Cargo.toml + tauri.conf.json + android tauri.properties
(versionCode 7000 → 7001). v0.7.1 = UI polish + bug-fix pass on
v0.7.0, wire-compatible.

download.html: new v0.7.1 section at top with detailed bullets for:
- Friend button (follow+vouch)
- Default visibility = Extended Friends (FoF)
- Network Identity → Device Address rename
- Settings persona/device clarity
- Profile-display-name bug fix
- Redundancy panel author-query fix
- My Posts horizontal-scroll regression fix

v0.7.0 entry retained below with full original release notes.

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

website/download.html

@@ -46,6 +46,39 @@
                 <p style="margin: 0.5rem 0 0 0; font-size: 0.8rem; color: var(--text-muted);">v0.5.3 is kept online only as an upgrade bridge &mdash; it no longer connects to the live network.</p>
             </div>
 
+            <h2 style="margin-top: 2rem;">v0.7.1 &mdash; May 15, 2026</h2>
+            <p style="color: var(--text-muted); font-size: 0.85rem;">UI polish + bug-fix pass on top of v0.7.0's FoF gating. Default post visibility is now Extended Friends (FoF). New <em>Friend</em> button combines follow + vouch in one click. Network Identity renamed to Device Address (you almost never need to touch it). Settings clearly separates personas from device address with an export/import "Move to another device" flow. Plus three fixes: profile display name now updates everywhere when changed; redundancy panel reads from the correct author set so it no longer shows 0 for all posts; My Posts tab no longer horizontally overflows and breaks the sticky header/tabs.</p>
+
+            <div class="downloads">
+                <a href="itsgoin-0.7.1.apk" class="download-btn btn-android">
+                    Android APK
+                    <span class="sub">v0.7.1</span>
+                </a>
+                <a href="itsgoin_0.7.1_amd64.AppImage" class="download-btn btn-linux">
+                    Linux AppImage
+                    <span class="sub">v0.7.1</span>
+                </a>
+                <a href="itsgoin-cli-0.7.1-linux-amd64" class="download-btn btn-linux">
+                    Linux CLI / Anchor
+                    <span class="sub">v0.7.1</span>
+                </a>
+                <a href="itsgoin-0.7.1-windows-x64-setup.exe" class="download-btn btn-windows">
+                    Windows Installer
+                    <span class="sub">v0.7.1</span>
+                </a>
+            </div>
+
+            <ul style="color: var(--text-muted); font-size: 0.85rem; line-height: 1.6; margin-top: 1rem;">
+                <li><strong>Default visibility is Extended Friends (FoF).</strong> Public is one click away when you want it; encrypted-by-default is the new posture.</li>
+                <li><strong>Friend button</strong> on the bio modal: follow + vouch in one tap. "Follow only" stays available for the watch-but-don't-trust case. "Unfriend" reverses both.</li>
+                <li><strong>Network Identity &rarr; Device Address.</strong> UI rename for clarity; the device's QUIC endpoint is distinct from your posting personas. Backend command names are unchanged.</li>
+                <li><strong>Settings &mdash; Move to another device.</strong> Export-personas / import-from-another-device buttons get their own labeled section with a plain-English explainer.</li>
+                <li><strong>Bug fix: profile display name update.</strong> Renaming the auto-generated first persona now propagates everywhere (the posting-identities table was previously stuck on the original empty name).</li>
+                <li><strong>Bug fix: redundancy panel.</strong> Was querying posts authored by the device's network NodeId; since v0.6.0 posts are authored by personas, so the query returned 0 of your posts. Now queries every persona on the device.</li>
+                <li><strong>Bug fix: My Posts horizontal-scroll regression.</strong> The new "FoF only (Mode 1)" compose-policy option pushed the visibility row past viewport width on mobile, triggering browser-chrome auto-hide behavior. Row now wraps; selects cap at container width.</li>
+            </ul>
+            <p style="color: var(--text-muted); font-size: 0.85rem;">v0.7.1 is wire-compatible with v0.7.0. UI/UX only.</p>
+
             <h2 style="margin-top: 2rem;">v0.7.0 &mdash; May 15, 2026</h2>
             <p style="color: var(--text-muted); font-size: 0.85rem;">Friend-of-Friend gating is live. Posts can be public to readers but FoF-gated for comments (Mode 2), or fully FoF-gated for body + comments (Mode 1, <code>FoFClosed</code>). The CDN verifies comment signatures before propagating, killing the bandwidth-DoS attack a single admitted FoF member could otherwise mount. Vouches distribute via HPKE-sealed wrappers in your bio post &mdash; no DMs, no recipient IDs on the wire.</p>