Page-aware labels in blog_new template

- "Post title"→"Page title", "Create Post"→"Create Page" when is_page

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

browser/templates/_types/blog_new/_main_panel.html

@@ -70,7 +70,7 @@
     type="text"
     name="title"
     value=""
-    placeholder="Post title..."
+    placeholder="{{ 'Page title...' if is_page else 'Post title...' }}"
     class="w-full text-[36px] font-bold bg-transparent border-none outline-none
            placeholder:text-stone-300 mb-[8px] leading-tight"
   >
@@ -101,7 +101,7 @@
       type="submit"
       class="px-[20px] py-[6px] bg-stone-700 text-white text-[14px] rounded-[8px]
              hover:bg-stone-800 transition-colors cursor-pointer"
-    >Create Post</button>
+    >{{ 'Create Page' if is_page else 'Create Post' }}</button>
   </div>
 </form>