feat: clarify web library memory and conversation management

web/index.html

@@ -77,8 +77,8 @@
             <button id="retryVoices" type="button" class="btn btn-secondary" hidden>Retry voice catalog</button>
             <div class="voice-list" id="voiceList" role="radiogroup" aria-label="English voices"></div>
 </div></div></section>
-<section data-settings-panel="privacy" hidden><h3>Memory &amp; data</h3><p id="privacyIdentity"></p><p>Memory controls are available only when supported by your private assistant. Conversation deletion does not erase account memory.</p><p id="settingsMemoryStatus" role="status"></p><div id="privacyMemory"></div><button id="settingsOpenLibrary" class="btn btn-secondary">Open Library</button></section>
-<section data-settings-panel="security" hidden><h3>Security</h3><p>Hope uses a secure cookie session. Sign out when you leave a shared device.</p><p>Password resets are managed by an administrator and revoke existing sessions.</p></section>
+<section data-settings-panel="privacy" hidden><h3>Memory &amp; data</h3><p class="settings-intro">Choose what Hope keeps for future conversations. Saved memory is separate from your chat history and uploaded files.</p><p id="privacyIdentity"></p><p id="settingsMemoryStatus" role="status"></p><div id="privacyMemory"></div><section class="data-guide" aria-labelledby="dataGuideTitle"><h4 id="dataGuideTitle">Manage your other saved data</h4><dl><div><dt>Conversations</dt><dd>Use the ••• menu beside a chat to archive it. To delete a chat, open it and use Conversation actions at the top right. Archiving keeps the chat; deleting removes it.</dd></div><div><dt>Files &amp; saved drafts</dt><dd>Review downloads and delete individual items in Library. Deleting a file also makes it unavailable to old chats that reference it.</dd></div></dl><button id="settingsOpenLibrary" class="btn btn-secondary">Manage files &amp; drafts</button></section></section>
+<section data-settings-panel="security" hidden><h3>Security</h3><p class="settings-intro">Your current connection and account access—not another set of switches to configure.</p><dl class="security-facts"><div><dt>Connected server</dt><dd id="securityServer"></dd></div><div><dt>Connection</dt><dd id="securityConnection"></dd></div><div><dt>Signed-in account</dt><dd id="securityIdentity"></dd></div><div><dt>Session access</dt><dd>Hope uses a server-managed cookie session. Signing out ends this browser’s current session.</dd></div></dl><section class="security-action"><h4>Leaving a shared device?</h4><p>Sign out so the next person cannot open your conversations or files.</p><button id="securitySignOut" data-settings-signout class="btn btn-secondary" type="button">Sign out of this browser</button></section><section class="security-action"><h4>Password or account concerns?</h4><p>Contact your Hope administrator for a password reset. A reset revokes existing sessions. Session lists, self-service password changes and two-factor settings are not available here.</p></section></section>
 <section data-settings-panel="admin" hidden>        <section id="adminSection" class="admin-section" hidden aria-labelledby="adminHeading">
             <div class="admin-header"><div><h2 id="adminHeading" tabindex="-1">Accounts</h2><p>Create a private assistant for each person.</p></div><button id="refreshUsers" class="btn btn-secondary">Refresh status</button></div>
             <p id="adminMessage" role="status">Loading accounts…</p>
@@ -96,7 +96,7 @@
 </section>
 </div></div></dialog>
 <div id="sheetBackdrop" class="sheet-backdrop" hidden></div>
-<dialog id="libraryDialog" aria-labelledby="libraryTitle"><div class="dialog-head"><h2 id="libraryTitle">Library</h2><button id="closeLibrary" class="btn btn-icon" aria-label="Close Library">×</button></div><p>Files and saved work, private to your account.</p><div id="libraryContent"></div></dialog>
+<dialog id="libraryDialog" class="library-window" aria-labelledby="libraryTitle"><div class="dialog-head"><div><h2 id="libraryTitle">Library</h2><p class="settings-intro">Your reference files and saved drafts.</p></div><button id="closeLibrary" class="btn btn-icon" aria-label="Close Library">×</button></div><p class="library-guide">Upload a file, choose <strong>Use in conversation</strong>, then ask Hope about it. Files are only included when you send a message—not automatically in every chat.</p><div id="libraryContent"></div></dialog>
 <div class="tasks-panel" id="tasksPanel" hidden inert aria-label="Assistant activity"><div class="tasks-header"><div><h2>Activity</h2><p>Progress from your private assistant.</p></div><button id="closeTasksBtn" class="btn btn-icon" aria-label="Close activity">×</button></div><div class="tasks-list" id="tasksList"><div class="tasks-empty"><strong>No activity yet</strong><span>Progress appears here while Hope works. Replies stay in your conversation.</span></div></div><div id="activityContent"></div></div>
 <div hidden aria-hidden="true"><button id="voiceModeBtn" type="button">Voice</button><button id="textModeBtn" type="button">Text</button><button id="clearBtn" type="button">Clear</button><button id="openVoice" type="button">Voice</button><button id="backToChat" type="button">Back to chat</button><form id="chatComposer"><textarea id="chatInput"></textarea><button id="sendChatBtn" disabled>Send</button></form></div>
     <dialog id="accountDialog" aria-labelledby="accountDialogTitle" aria-describedby="accountDialogDescription">