Chore: cleanup and upgrade codebase

[alex0207s]

• upgrade solidity version from 0.8.17 to 0.8.26
• ugrrade openzeppelin version from 4.9.2 to 5.0.2
• remove unused token config
• remove unused contracts
• remove some redundant if statements and override modifiers

Note

After Solidity 0.8.8, there is no need to add the override modifier to a function that is inherited from interface contracts.

[github-actions]

Changes to gas cost

Generated at commit: 88004553474d819cf61668bdd34ab45ea04b1cc1, compared to commit: 32951ad4448c48bf7a98ab71c5d3cb3055152bc2

🧾 Summary (20% most significant diffs)

Contract	Method	Avg (+/-)	%
AllowanceTarget	spendFromUserTo unpause	+1,714 ❌ +2,113 ❌	+3.46% +9.02%

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Full diff report 👇

Contract	Deployment Cost (+/-)	Method	Min (+/-)	%	Avg (+/-)	%	Median (+/-)	%	Max (+/-)	%	# Calls (+/-)
AllowanceTarget	613,454 (-58,853)	pause spendFromUserTo unpause	23,422 (0) 25,029 (-61) 23,423 (0)	0.00% -0.24% 0.00%	26,608 (+354) 51,264 (+1,714) 25,536 (+2,113)	+1.35% +3.46% +9.02%	27,671 (0) 49,849 (+13,614) 25,536 (+2,113)	0.00% +37.57% +9.02%	27,671 (0) 91,606 (-74) 27,649 (+4,226)	0.00% -0.08% +18.04%	4 (+1) 8 (+1) 2 (+1)

[github-actions]

Changes to gas cost

Generated at commit: 88004553474d819cf61668bdd34ab45ea04b1cc1, compared to commit: 32951ad4448c48bf7a98ab71c5d3cb3055152bc2

🧾 Summary (20% most significant diffs)

Contract	Method	Avg (+/-)	%
LimitOrderSwap	fillLimitOrder fillLimitOrderGroup	-247,004 ✅ -68,473 ✅	-17.32% -28.15%
CoordinatedTaker	approveTokens	-4,458 ✅	-2.57%

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Full diff report 👇

Contract	Deployment Cost (+/-)	Method	Min (+/-)	%	Avg (+/-)	%	Median (+/-)	%	Max (+/-)	%	# Calls (+/-)
LimitOrderSwap	2,730,640 (-29,902)	cancelOrder fillLimitOrder fillLimitOrderFullOrKill fillLimitOrderGroup	29,257 (0) 36,094 (-20) 48,304 (+68) 31,168 (-167,201)	0.00% -0.06% +0.14% -84.29%	40,674 (+4) 1,179,473 (-247,004) 104,056 (+22) 174,739 (-68,473)	+0.01% -17.32% +0.02% -28.15%	33,862 (+6) 161,770 (-6,976) 48,304 (+68) 198,266 (-47,760)	+0.02% -4.13% +0.14% -19.41%	52,767 (+6) 29,534,880 (-319) 215,562 (-68) 291,975 (-228)	+0.01% -0.00% -0.03% -0.08%	7 (0) 28 (+5) 3 (0) 9 (+3)
RFQ	2,465,421 (-56,727)	cancelRFQOffer feeCollector fillRFQ fillRFQWithSig setFeeCollector	23,996 (+30) 382 (-44) 31,822 (+4) 33,882 (+1) 23,793 (+22)	+0.13% -10.33% +0.01% +0.00% +0.09%	37,923 (+42) 382 (-44) 131,171 (+1,410) 113,442 (-46) 25,964 (+22)	+0.11% -10.33% +1.09% -0.04% +0.08%	38,918 (+45) 382 (-44) 147,976 (-107) 77,710 (+87) 23,998 (+22)	+0.12% -10.33% -0.07% +0.11% +0.09%	49,859 (+45) 382 (-44) 238,908 (+15,148) 228,734 (-228) 30,102 (+22)	+0.09% -10.33% +6.77% -0.10% +0.07%	4 (0) 2 (+1) 24 (+2) 3 (0) 3 (0)
CoordinatedTaker	2,367,349 (-57,222)	approveTokens submitLimitOrderFill	27,095 (-8) 33,103 (-17)	-0.03% -0.05%	169,261 (-4,458) 128,473 (-21)	-2.57% -0.02%	189,038 (-8,740) 70,073 (+29)	-4.42% +0.04%	189,038 (-8,740) 256,667 (-124)	-4.42% -0.05%	15 (+2) 7 (0)
SmartOrderStrategy	1,226,691 (-77,856)	approveTokens executeStrategy	56,282 (-2,254) 23,234 (-19)	-3.85% -0.08%	185,084 (+1,612) 123,683 (+2,995)	+0.88% +2.48%	268,806 (-14,615) 90,796 (+51,540)	-5.16% +131.29%	268,806 (-14,615) 610,220 (-305)	-5.16% -0.05%	33 (+6) 18 (+3)
GenericSwap	1,756,522 (-43,526)	executeSwap executeSwapWithSig	32,322 (+37) 39,528 (+27)	+0.11% +0.07%	117,670 (-76) 168,429 (-90)	-0.06% -0.05%	115,374 (-58) 175,155 (-79)	-0.05% -0.05%	252,012 (-263) 283,880 (-226)	-0.10% -0.08%	12 (0) 4 (0)