Adds support for GPT-4.1 and Amazon Bedrock DeepSeek-R1 models.
Fixes issues with app creation from template categories and
DSL version checks.
Updates version numbers in configuration files and Docker
setup to 0.15.7 for consistency.
Addresses issues #18807, #18868, #18872, #18878, and #18912.
Signed-off-by: -LAN- <laipz8200@outlook.com>
