Feat: New blog article page.

models/model_view_base.py

@@ -277,6 +277,7 @@ class Model_View_Base(BaseModel, ABC):
     HASH_PAGE_APPLY_FOUNDING_PARTNER_SUCCESS: ClassVar[str] = '/apply-founding-partner-success'#
     HASH_PAGE_BLOG_ARTICLE_HOW_TO_SCALE_YOUR_DOG_TRAINING_BUSINESS_FROM_25_TO_100_PLUS_CLIENTS: ClassVar[str] = '/blog/article/how-to-scale-your-dog-training-business-from-25-to-100-plus-clients'
     HASH_PAGE_BLOG_ARTICLE_HOW_TO_SCALE_YOUR_DOG_TRAINING_BUSINESS_FROM_SOLO_TO_MULTI_TRAINER_SUCCESS: ClassVar[str] = '/blog/article/how-to-scale-your-dog-training-business-from-solo-to-multi-trainer-success'
+    HASH_PAGE_BLOG_ARTICLE_THE_HIDDEN_COSTS_OF_SPREADSHEET_DOG_TRAINING_WHY_UK_TRAINERS_ARE_LOSING_2000_PLUS_POUNDS_PER_YEAR: ClassVar[str] = '/blog/article/the-hidden-costs-of-spreadsheet-dog-training-why-uk-trainers-are-losing-2000-plus-pounds-per-year'
     HASH_PAGE_BLOG_ARTICLE_THE_SCIENCE_BEHIND_DOG_TRAINING_ASSESSMENTS_HOW_TRACK_REAL_PROGRESS: ClassVar[str] = '/blog/article/the-science-behind-dog-training-assessments-how-to-track-real-progress'
     HASH_PAGE_BLOG_ARTICLE_WHY_EVERY_PROFESSIONAL_TRAINER_NEEDS_A_COMMAND_DICTIONARY_IN_2025: ClassVar[str] = '/blog/article/why-every-professional-trainer-needs-a-command-dictionary-in-2025'
     HASH_PAGE_BLOG_CATEGORY_MARKETING_AND_GROWTH: ClassVar[str] = '/blog/category/marketing-and-growth'