fix: resolve homepage sections editor and rendering issues

- Fix sections editor not showing by converting isHomepage getter to property
- Add Alpine Collapse plugin for accordion animations
- Fix Quill editor content not syncing after page load
- Add platform dropdown to content page edit form
- Create shared templates config (app/templates_config.py) with i18n globals
  to make _() translation function available in Jinja2 macros
- Fix pricing template field names (monthly_price → price_monthly)
- Fix translation key (pricing.save_20 → pricing.save_months)
- Add tiers context to CMS homepage route for pricing section
- Fix architecture validation issues (language defaults, inline SVGs → $icon)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/routes/platform_pages.py

@@ -11,7 +11,7 @@ from pathlib import Path
 
 from fastapi import APIRouter, Depends, HTTPException, Request
 from fastapi.responses import HTMLResponse
-from fastapi.templating import Jinja2Templates
+from app.templates_config import templates
 from sqlalchemy.orm import Session
 
 from app.core.config import settings
@@ -24,8 +24,8 @@ logger = logging.getLogger(__name__)
 
 # Get the templates directory
 BASE_DIR = Path(__file__).resolve().parent.parent.parent
-TEMPLATES_DIR = BASE_DIR / "app" / "templates"
-templates = Jinja2Templates(directory=str(TEMPLATES_DIR))
+# TEMPLATES_DIR moved to app.templates_config
+# templates imported from app.templates_config
 
 
 def get_platform_context(request: Request, db: Session) -> dict:
@@ -171,6 +171,25 @@ async def homepage(
         context["page"] = cms_homepage
         context["platform"] = platform
 
+        # Include subscription tiers for pricing section
+        from models.database.subscription import TIER_LIMITS, TierCode
+
+        tiers = []
+        for tier_code, limits in TIER_LIMITS.items():
+            tiers.append({
+                "code": tier_code.value,
+                "name": limits["name"],
+                "price_monthly": limits["price_monthly_cents"] / 100,
+                "price_annual": (limits["price_annual_cents"] / 100) if limits.get("price_annual_cents") else None,
+                "orders_per_month": limits.get("orders_per_month"),
+                "products_limit": limits.get("products_limit"),
+                "team_members": limits.get("team_members"),
+                "features": limits.get("features", []),
+                "is_popular": tier_code == TierCode.PROFESSIONAL,
+                "is_enterprise": tier_code == TierCode.ENTERPRISE,
+            })
+        context["tiers"] = tiers
+
         template_name = cms_homepage.template or "default"
         template_path = f"platform/homepage-{template_name}.html"