Remove unused templates for newsletter creation, settings, and submissions; update unsubscribe confirmation link; add tests for email templates API.

server/routes/admin.py

@@ -14,21 +14,21 @@ bp = Blueprint("admin", __name__, url_prefix="/admin")
 @auth.login_required
 def dashboard():
     """Display admin dashboard overview."""
-    return render_template("admin_dashboard.html")
+    return render_template("admin/admin_dashboard.html")
 
 
 @bp.route("/newsletter")
 @auth.login_required
 def newsletter_subscribers():
     """Display newsletter subscriber management page."""
-    return render_template("admin_newsletter.html")
+    return render_template("admin/admin_newsletter.html")
 
 
 @bp.route("/newsletter/create")
 @auth.login_required
 def newsletter_create():
     """Display newsletter creation and sending page."""
-    return render_template("admin_newsletter_create.html")
+    return render_template("admin/admin_newsletter_create.html")
 
 
 @bp.route("/settings")
@@ -72,21 +72,28 @@ def settings_page():
         },
     }
 
-    return render_template("admin_settings.html", settings=app_settings)
+    return render_template("admin/admin_settings.html", settings=app_settings)
 
 
 @bp.route("/submissions")
 @auth.login_required
 def submissions():
     """Display contact form submissions page."""
-    return render_template("admin_submissions.html")
+    return render_template("admin/admin_submissions.html")
 
 
 @bp.route("/embeds")
 @auth.login_required
 def embeds():
     """Display embeddable forms management page."""
-    return render_template("admin_embeds.html")
+    return render_template("admin/admin_embeds.html")
+
+
+@bp.route('/email-templates')
+@auth.login_required
+def email_templates():
+    """Display admin page for editing email templates."""
+    return render_template('admin/admin_email_templates.html')
 
 
 @bp.route("/api/settings", methods=["GET"])
@@ -110,6 +117,11 @@ def validate_setting(key: str, value: str) -> str | None:
         "newsletter_enabled": lambda v: v in ["true", "false"],
         "rate_limit_max": lambda v: v.isdigit() and 0 <= int(v) <= 1000,
         "rate_limit_window": lambda v: v.isdigit() and 1 <= int(v) <= 3600,
+        # Embed dimensions (pixels)
+        "embed_contact_width": lambda v: v.isdigit() and 100 <= int(v) <= 2000,
+        "embed_contact_height": lambda v: v.isdigit() and 100 <= int(v) <= 2000,
+        "embed_newsletter_width": lambda v: v.isdigit() and 100 <= int(v) <= 2000,
+        "embed_newsletter_height": lambda v: v.isdigit() and 100 <= int(v) <= 2000,
     }
 
     if key in validations and not validations[key](value):