Add CIPHER Premium (Solana MEV Deep Dive) to Example Apps

[cryptomotifs]

Adding a new x402-gated example app: CIPHER Premium — Solana MEV Deep Dive.

• Live URL: https://cipher-x402.vercel.app
• Gated route (returns HTTP 402 with v2 accept-list): https://cipher-x402.vercel.app/premium/mev-deep-dive
• Free companion playbook (MIT): https://github.com/cryptomotifs/cipher-starter

What the gated route offers: a 5,000-word premium chapter expanding the public CIPHER Solana Quant Playbook with:

• Jito bundle tip math (closed-form break-even under different sandwich probabilities)
• Dynamic oracle-gate bps tuning by liquidity regime
• Illiquidity blocklist heuristics
• Six-channel sim-vs-reality divergence analysis
• Multi-DEX re-route decision rule
• $1k 72-hour test matrix (5 configs)

Settlement: $0.25 USDC on Base mainnet (eip155:8453). Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913. Payout: 0xa0630fAD18C732e94D56d2D5F630963eb8fB9640.

Happy to update the positioning if you'd like it in a different subsection.

[cryptomotifs]

While this PR is still open: we just shipped an 11th cipher-x402 endpoint that may be a better fit for awesome-x402 than the Markdown chapters, since it's actually JSON that an agent can consume programmatically.

cipher-omnidata — multi-source asset data aggregator

• URL: https://cipher-omnidata.vercel.app
• Endpoint: `GET /api/omnidata/:asset` (ticker / Solana mint / EVM address)
• Price: $0.05 USDC on Base
• Aggregates: CoinGecko + Helius + Finnhub + Alpha Vantage + FRED + Etherscan + Bitquery → one JSON
• payTo: `0xa0630fAD18C732e94D56d2D5F630963eb8fB9640`

Verified: landing `200`, gated route returns `HTTP 402` + x402 v2 accept-list. Failed upstreams degrade to `null` + log in `warnings[]` — never fabricated.

Happy to add this as a second entry alongside the Markdown chapters if you'd like, or keep it for a follow-up PR — whichever fits the repo style better.

[cryptomotifs]

New CIPHER endpoint just shipped on Base — adding for maintainers' consideration when this PR lands:

cipher-coinalyze — Perp funding-rate intelligence across 17 exchanges

• Endpoint: GET https://cipher-coinalyze.vercel.app/api/funding/:symbol
• Price: $0.01 USDC on Base per call
• payTo: 0xa0630fAD18C732e94D56d2D5F630963eb8fB9640
• One call returns funding rate + USD open interest from Binance, Bybit, OKX, BitMEX, Deribit, dYdX, Hyperliquid, Bitfinex, Huobi, Kraken, Phemex, WOO X, Aster, Lighter, Coinbase, Gate.io, Vertex — plus OI-weighted aggregate, divergence in bps, and max/min funding exchange for perp-arbitrage bots.

Happy to bundle this into the existing listing row or submit as a separate entry once this PR is merged.