Bundles feature WIP + fix request-access products cap (20 -> 200)

- app/main.py: raise products_raw[:20] cap to [:200] in /api/request-access
  and /api/request-more-access - was silently truncating access requests
  with more than 20 selected products
- accumulated bundles/product-page WIP (config, models, runtime, templates)

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

app/utils.py

@@ -1,6 +1,7 @@
 import datetime as dt
 import json
 import logging
+import re
 import contextvars
 from pathlib import Path
 from typing import Optional
@@ -86,6 +87,26 @@ def format_service_comment(raw_text: str) -> Markup:
     return Markup(_md(raw))
 
 
+def format_seo_description(raw_text: str) -> Markup:
+    """Render a service's long-form SEO description (public /product/{slug}
+    page) to HTML. Unlike format_service_comment() (short dashboard card
+    text), this source text may carry its own leading '# Product Name'
+    title line - the page template already renders an <h1> with the name,
+    so a duplicate <h1> here would hurt SEO. We drop that leading title
+    line if present, and downgrade any other single-# headings (section
+    headers like '# Возможности') to ## so the page never emits more than
+    one <h1>."""
+    raw = (raw_text or "").replace("\r\n", "\n").replace("\r", "\n").strip()
+    if not raw:
+        return Markup("")
+    lines = raw.split("\n")
+    if lines and re.match(r"^#\s+", lines[0]):
+        lines = lines[1:]
+    body = "\n".join(lines).strip()
+    body = re.sub(r"(?m)^#\s+", "## ", body)
+    return Markup(_md(body))
+
+
 def parse_rdp_target(target: str) -> dict:
     raw = (target or "").strip()
     if not raw: