Spirit Airlines brand refresh: Fable 5 vs Opus 4.8

/goal You are a full-service creative agency. Spirit Airlines desperately needs a rebrand, and you've been hired to deliver the complete 360° campaign — strategy through finished assets — in one engagement.

Deliver ALL of the following:

1. DIAGNOSIS: a sharp one-page read on why the current brand is failing — positioning, perception, who they've lost. Grounded in what you actually know about the company; research online for current reality first.
2. THE REBRAND: the big idea in one sentence, new brand positioning, new slogan, new tagline, brand voice in three adjectives with a line of rationale each.
3. VISUAL IDENTITY: logo direction, color palette (hex values), and type system — show, don't describe.
4. THE LANDING PAGE: build and deploy (Vercel, live URL) the new brand's homepage — the rebrand made real. It should look like a launch, not a mockup.
5. IN-SITU CAMPAIGN ASSETS: generate finished ad imagery with GPT Image (chatgpt-imagegen "<prompt>" -o <path>.png --size 1536x1024 --timeout 300, one at a time): a billboard in a real urban setting, a subway/transit placement, and two social-format ads — all carrying the new identity and tagline consistently.
   IMAGE THROTTLING (hard rules — chatgpt-imagegen uses Pat's shared ChatGPT subscription quota; do NOT drain it): (a) generate EXACTLY these 4 assets — billboard, transit, 2 social — plus at most 1 logo. 5 images MAX, no extras/variations; (b) one at a time, sequential, never parallel; (c) FAIL FAST — if any imagegen call errors, times out, or hits a usage/rate-limit message, STOP and finish the campaign + PDF with whatever assets you have. Never retry a failed image in a loop.
6. THE PITCH PDF: compile everything above — diagnosis, big idea, identity, screenshots of the live page, the in-situ assets — into one beautifully typeset campaign PDF, the document an agency would slide across the table.

DONE when: the landing page is live, every asset carries one coherent new identity, and the PDF reads like a campaign that could actually run. The through-line from diagnosis to assets must be ONE idea, consistently executed — a scattered campaign is a failed campaign.