Remove Fleek hosting integration

[garyghayrat]

Summary

• remove the Fleek CLI dependency and Fleek config file
• remove the Fleek artifact upload and deploy job from CI
• keep the existing Netlify/static frontend build flow unchanged

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[github-actions]

Coverage after merging codex/remove-fleek-hosting-integration into master will be

83.99%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
contracts-periphery/src
UmbraBatchSend.sol	100%	100%	100%	100%
UniswapWithdrawHook.sol	100%	100%	100%	100%
umbra-js/src
ethers.ts	74.58%	100%	58.33%	100%
types.ts	50%	100%	0%	100%
umbra-js/src/classes
KeyPair.ts	98.54%	97.62%	100%	98.75%	248, 250
RandomNumber.ts	100%	100%	100%	100%
StealthKeyRegistry.ts	100%	100%	100%	100%
TxHistoryProvider.ts	85.19%	65%	100%	96.55%	12, 17, 20, 23, 29, 43, 48, 8
Umbra.ts	82.47%	74.25%	85.37%	87%	144–145, 166, 239–240, 308, 326–329, 365–366, 397, 412, 415, 422–424, 426, 433, 436–437, 462, 462, 462, 464, 464, 464, 466, 466, 466, 466–467, 467, 467–469, 484, 484, 484–485, 489, 492, 512, 530–532, 573, 628, 632, 678, 691–692, 702–703, 717, 725–726, 756–757, 832–833, 836, 839–840, 846–848, 855, 855, 855–858, 893, 895–896, 896–897
umbra-js/src/utils
cns.ts	50%	33.33%	50%	55%	33–36, 40, 40, 40, 40, 40–41, 44–46
constants.ts	100%	100%	100%	100%
ens.ts	36.11%	25%	33.33%	40%	25–27, 35, 56–57, 57, 57–58, 63–64, 66, 70, 70, 70, 70, 70–71, 75–77
sharedSecret.ts	83.05%	72.73%	100%	87.88%	24, 27–28, 42–43, 47–48, 62, 62–63
utils.ts	71.02%	63.98%	80%	74.82%	102, 102, 1026–1027, 1039–1040, 118–120, 122–124, 130, 152–153, 179–181, 181, 181–182, 182, 182, 203, 268, 271, 276, 280, 284, 294, 306–311, 313–320, 320, 320, 320, 320, 320, 320–321, 323, 333, 347–348, 348, 348–349, 353–354, 364, 364, 364–366, 368, 384–386, 414, 437, 440, 444, 444–445, 445, 445–446, 446, 448, 452–453, 456–457, 480, 483, 483, 483–485, 515, 517–518, 527, 527, 527–528, 530, 533, 542–543, 584, 601, 601, 601, 630, 652–654, 657, 667, 679, 679, 68, 680, 685, 687–688, 69, 699–703, 716, 718, 769–770, 770, 770–772, 772, 772, 783, 94
umbra-js/test
testPrivateKeys.ts	100%	100%	100%	100%
utils.ts	100%	100%	100%	100%