Fix dead oversized-video link and stop exposing the platform limit to readers

build_oversized_video_note linked to the video's own VK page (with an
access_key suffix), which 404s for viewers without a VK session - reported
as "такой страницы нет" on a real post. Point at the wall post instead
(vk_url), same as build_media_unavailable_note already does, since that
always resolves.

Also dropped "Видео слишком большое для платформы" from the visible text -
subscribers don't need to know MAX has a 250MB cap, that's an internal
implementation detail, not something worth surfacing in a public post.

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

src/max_poster.py

@@ -305,7 +305,7 @@ class MAXPoster:
         )
 
         note = build_media_unavailable_note(link_only_media or [], parse_mode="html", vk_url=vk_url)
-        video_note = build_oversized_video_note(oversized_videos or [], parse_mode="html")
+        video_note = build_oversized_video_note(oversized_videos or [], parse_mode="html", vk_url=vk_url)
         for extra in (note, video_note):
             if extra:
                 formatted_text = f"{formatted_text}\n\n{extra}" if formatted_text else extra

src/text_formatter.py

@@ -172,27 +172,31 @@ def build_media_unavailable_note(
     return header + "\n" + "\n".join(lines)
 
 
-def build_oversized_video_note(items: list, parse_mode: str = "html") -> str:
+def build_oversized_video_note(
+    items: list, parse_mode: str = "html", vk_url: Optional[str] = None
+) -> str:
     """Like build_media_unavailable_note, but for videos that were deliberately
-    skipped for exceeding a platform's size limit (e.g. MAX's 250MB video cap) -
-    friendlier tone since this isn't a failure, just a known platform limit."""
+    skipped for exceeding a platform's size limit (e.g. MAX's 250MB video cap).
+    Points at the wall post (vk_url), not the video's own page - VK's direct
+    video URLs can 404 for viewers without a session, while the post always
+    resolves. Wording doesn't mention the platform limit: that's an internal
+    reason for readers, not something worth surfacing to subscribers."""
     if not items:
         return ""
-    lines = []
-    for item in items:
-        url = str(getattr(item, "original_url", "") or "").strip()
-        if not url:
-            continue
-        if parse_mode == "html":
-            lines.append(f'- <a href="{html.escape(url, quote=True)}">видео по ссылке</a>')
-        else:
-            lines.append(f"- видео по ссылке: {url}")
-    if not lines:
+    target = vk_url or next(
+        (str(getattr(item, "original_url", "") or "").strip() for item in items if getattr(item, "original_url", None)),
+        "",
+    )
+    if not target:
         return ""
-    header = "Видео слишком большое для платформы, посмотреть можно здесь:"
+    if parse_mode == "html":
+        line = f'- <a href="{html.escape(target, quote=True)}">Смотреть видео в VK</a>'
+    else:
+        line = f"- Смотреть видео в VK: {target}"
+    header = "Видео к этому посту:"
     if parse_mode == "html":
         header = f"<i>{html.escape(header)}</i>"
-    return header + "\n" + "\n".join(lines)
+    return header + "\n" + line
 
 
 def format_post_text(