fix: title_prefix block for browser tab — évite conflit Jinja2 page_title double

Erreur: block 'page_title' defined twice → TemplateAssertionError
Fix: title_prefix (nouveau bloc) pour <title>, page_title (existant) pour Alpine

10 templates mis à jour avec title_prefix.

app/templates/accounts.html

@@ -1,6 +1,7 @@
 {% extends "base.html" %}
 {% block page_icon %}👤{% endblock %}
 {% block page_title %}Accounts{% endblock %}
+{% block title_prefix %}Accounts{% endblock %}
 
 {% block content %}
 <div class="page-title-area">

app/templates/base.html

@@ -3,7 +3,7 @@
 <head>
   <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
-  <title>FlowDeck — {% block page_title %}Home{% endblock %}</title>
+  <title>FlowDeck — {% block title_prefix %}Home{% endblock %}</title>
   <link rel="icon" type="image/svg+xml" href="/static/favicon.svg">
   <link rel="stylesheet" href="/static/css/design-tokens.css?v=1.0">
   <link rel="stylesheet" href="/static/css/app.css?v=2.4.6">

app/templates/board.html

@@ -1,6 +1,7 @@
 {% extends "base.html" %}
 {% block page_icon %}📁{% endblock %}
 {% block page_title %}Kanban board new{% endblock %}
+{% block title_prefix %}Kanban board new{% endblock %}
 
 {% block content %}
 <!-- Cover image -->

app/templates/dashboard.html

@@ -1,6 +1,7 @@
 {% extends "base.html" %}
 {% block page_icon %}🏠{% endblock %}
 {% block page_title %}Home{% endblock %}
+{% block title_prefix %}Home{% endblock %}
 
 {% block content %}
 <div class="page-title-area" style="padding-top: 24px;">

app/templates/gitea_workspace.html

@@ -1,5 +1,6 @@
 {% extends "base.html" %}
 {% block page_title %}{{ workspace_name }}{% endblock %}
+{% block title_prefix %}{{ workspace_name }}{% endblock %}
 {% block page_icon %}🔗{% endblock %}
 
 {% block topbar %}

app/templates/library.html

@@ -1,6 +1,7 @@
 {% extends "base.html" %}
 {% block page_icon %}📚{% endblock %}
 {% block page_title %}Library{% endblock %}
+{% block title_prefix %}Library{% endblock %}
 
 {% block content %}
 <div class="page-title-area">

app/templates/local_workspace.html

@@ -1,5 +1,6 @@
 {% extends "base.html" %}
 {% block page_title %}{{ workspace_name }}{% endblock %}
+{% block title_prefix %}{{ workspace_name }}{% endblock %}
 {% block page_icon %}📁{% endblock %}
 
 {% block topbar %}

app/templates/settings.html

@@ -1,5 +1,6 @@
 {% extends "base.html" %}
 {% block page_title %}Settings{% endblock %}
+{% block title_prefix %}Settings{% endblock %}
 {% block page_icon %}⚙️{% endblock %}
 
 {% block topbar %}

app/templates/trash.html

@@ -1,6 +1,7 @@
 {% extends "base.html" %}
 {% block page_icon %}🗑️{% endblock %}
 {% block page_title %}Trash{% endblock %}
+{% block title_prefix %}Trash{% endblock %}
 
 {% block content %}
 <div class="page-title-area">

app/templates/workspace.html

@@ -1,5 +1,6 @@
 {% extends "base.html" %}
 {% block page_title %}Workspace{% endblock %}
+{% block title_prefix %}Workspace{% endblock %}
 {% block page_icon %}🏠{% endblock %}
 
 {% block topbar %}

app/templates/workspaces.html

@@ -1,5 +1,6 @@
 {% extends "base.html" %}
 {% block page_title %}Workspaces{% endblock %}
+{% block title_prefix %}Workspaces{% endblock %}
 {% block page_icon %}🏠{% endblock %}
 
 {% block topbar %}