feat: sweep complet — tous les émojis → outline SVG icons

Templates modifiés (22 fichiers):
- _icons.html: +14 new icons (paperclip, external-link, sparkles, lightbulb, tag,
  file-text, save, upload, trending-up, zap, alert-triangle, user, eye-off)
- base.html: +8 JS icons, 🦎🐙🔑🔗👁📋🔲📑❓⚠️→SVG
- page_editor.html: 43→0 émojis (📎📄🔒🔗⭐📋📁✨📝🗄📑📊📅🗓🖼📥🌐✏💬💡 etc)
- settings.html: 30→0 (⚙️📋🏷🧩👥💾🙈👁🔒🌙☀️🌳📊📝⚠🦎✅🐙🔗✏🗑)
- local_workspace.html: 25→0 (📄📁✏🗑⚠📋➕)
- gitea_workspace.html: 25→0 (🔗📄📤🔄⚙📁📄🔒✏🗑💾)
- board.html: 13→0 (📁📊📋☰📈👥✕✓🗑⚡🔍)
- workspace.html: 11→0 (🏠🔑⚙📁🔗📂🐙)
- landing.html: 8→0 (📚🚀📝📊🦎🌐🔒⚡)
- trash.html, table_view, dashboard, accounts, card_detail, public_page,
  workspaces, team_load, notes, _header, detailed_board, card, board_fragment
- Ajouté import _icons.html aux fragments standalone
- 143 tests passent

app/templates/landing.html

@@ -3,6 +3,7 @@
 <head>
   <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  {% from '_icons.html' import fd_icon %}
   <title>FlowDeck — All-in-one workspace</title>
   <link rel="icon" type="image/svg+xml" href="/static/favicon.svg">
   <style>
@@ -142,7 +143,7 @@
 
 <nav class="landing-nav">
   <a href="/" class="landing-logo">
-    <span>📚</span> FlowDeck
+    <span>{{ fd_icon("book",20) }}</span> FlowDeck
   </a>
   <div class="landing-nav-actions">
     <a href="/auth/login?provider=local" class="btn btn-secondary">Log in</a>
@@ -158,39 +159,39 @@
     All on your own server.
   </p>
   <div class="hero-actions">
-    <a href="/auth/register" class="btn btn-primary">🚀 Get started — it's free</a>
+    <a href="/auth/register" class="btn btn-primary">Get started — it's free</a>
     <a href="/auth/login?provider=local" class="btn btn-secondary">I already have an account</a>
   </div>
 </section>
 
 <div class="features">
   <div class="feature-card">
-    <div class="feature-icon">📝</div>
+    <div class="feature-icon">{{ fd_icon("edit",24) }}</div>
     <h3>Block Editor</h3>
     <p>Notion-style editor with slash commands, markdown shortcuts, headings, code blocks, to-dos, and more.</p>
   </div>
   <div class="feature-card">
-    <div class="feature-icon">📊</div>
+    <div class="feature-icon">{{ fd_icon("bar-chart",24) }}</div>
     <h3>Kanban & Tables</h3>
     <p>Visual project management with drag-drop boards, table views, and database collections.</p>
   </div>
   <div class="feature-card">
-    <div class="feature-icon">🦎</div>
+    <div class="feature-icon">{{ fd_icon("link",24) }}</div>
     <h3>Gitea & GitHub</h3>
     <p>Browse repos, edit files, commit changes — all from your workspace sidebar.</p>
   </div>
   <div class="feature-card">
-    <div class="feature-icon">🌐</div>
+    <div class="feature-icon">{{ fd_icon("globe",24) }}</div>
     <h3>Publish to Web</h3>
     <p>One-click publish any page to a public URL. Share with anyone, no account needed.</p>
   </div>
   <div class="feature-card">
-    <div class="feature-icon">🔒</div>
+    <div class="feature-icon">{{ fd_icon("lock",24) }}</div>
     <h3>Self-Hosted</h3>
     <p>Your data stays on your server. No vendor lock-in, full control, Docker single-container deploy.</p>
   </div>
   <div class="feature-card">
-    <div class="feature-icon">⚡</div>
+    <div class="feature-icon">{{ fd_icon("zap",24) }}</div>
     <h3>Fast & Light</h3>
     <p>Alpine.js + FastAPI + SQLite. No React bloat, no Node.js needed. Sub-100ms page loads.</p>
   </div>