Stealing Luck from the Heavenly Dao's Favorite

=== English Original Title: "Holding the space chat group, the cannon fodder female supporting role ascended" (Note: Title adapted for tone and readability while preserving the story’s core themes.) === Wei Yunxi transmigrated into the novel she was reading—great, right? Wrong. She's now the tragic female supporting character who exists solely to prop up the flawless heroine, her half-sister Wei Yuqing. The original Yunxi handed over treasures, resources, and even her own cultivation, only to die horribly in the end. Nope. Not happening this time. Yunxi has a new motto: If it's mine, I'm keeping it. No more playing ATM for the heroine. Especially since Yuqing is the Heavenly Dao's Darling—blessed with insane luck. Try to steal her opportunities? The universe just hands her a better one. Oppose her? Heavenly lightning says bonk. But Yunxi isn't completely helpless. First, she snatches the mahogany plaque—her golden finger—right from under Yuqing's nose. Boom! Instant cheat code: a cross-dimensional chat group filled with overpowered allies from the apocalypse, interstellar world, and even the divine realm. Now, Yunxi can trade resources, scheme, and finally fight back. Too bad the heroine (and the male lead?) won't stop clinging to her. What part of "I'm not your personal loot box" do they not understand?