refactor: reorganize documentation structure and improve navigation

- Restructure learn section with clearer categorization (What, Why, Network Overview, Protocol Overview)
- Update URL redirects in next.config.mjs to match new documentation structure
- Remove redundant files and consolidate content
- Update theme configuration to match new navigation structure
- Add styling improvements for documentation lists and navigation
- Remove economics and mining sections for reorganization

next.config.mjs

@@ -11,7 +11,87 @@ const nextConfig = withNextra({
 		return [
 			{
 				source: "/",
-				destination: "/learn/learn-about-irys/what-is-irys",
+				destination: "/learn/what/what-a-datachain-is",
+				permanent: true,
+			},
+			{
+				source: '/learn/learn-about-irys/what-is-datachain',
+				destination: '/learn/what/what-a-datachain-is',
+				permanent: true,
+			},
+			{
+				source: '/learn/learn-about-irys/what-is-irys',
+				destination: '/learn/what/what-irys-is',
+				permanent: true,
+			},
+			{
+				source: '/learn/learn-about-irys/why-irys-exists',
+				destination: '/learn/what/why-irys-exists',
+				permanent: true,
+			},
+			{
+				source: '/learn/learn-about-irys/problems-solved',
+				destination: '/learn/what/how-irys-solves-these-problems',
+				permanent: true,
+			},
+			{
+				source: '/learn/learn-about-irys/what-is-a-datachain',
+				destination: '/learn/what/what-a-datachain-is',
+				permanent: true,
+			},
+			{
+				source: '/learn/why-build-on-irys/programmable-data',
+				destination: '/learn/why/why-programmable-data',
+				permanent: true,
+			},
+			{
+				source: '/learn/why-build-on-irys/verifiability',
+				destination: '/learn/why/why-verifiability',
+				permanent: true,
+			},
+			{
+				source: '/learn/why-build-on-irys/irysvm',
+				destination: '/learn/why/why-irysvm',
+				permanent: true,
+			},
+			{
+				source: '/learn/network/miners',
+				destination: '/learn/network-overview/becoming-a-miner-on-irys',
+				permanent: true,
+			},
+			{
+				source: '/learn/network/bundler',
+				destination: '/learn/network-overview/bundling-transactions',
+				permanent: true,
+			},
+			{
+				source: '/learn/network/gateway',
+				destination: '/learn/network-overview/irys-gateway',
+				permanent: true,
+			},
+			{
+				source: '/learn/protocol/partitions',
+				destination: '/learn/protocol-overview/partitions-overview',
+				permanent: true,
+			},
+			{
+				source: '/learn/protocol/ledgers',
+				destination: '/learn/protocol-overview/ledgers-overview',
+				permanent: true,
+			},
+			{
+				source: '/learn/protocol/transactions',
+				destination: '/learn/protocol-overview/transactions-overview',
+				permanent: true,
+			},
+			{
+				source: '/learn/mining-on-irys/matrix-packing',
+				destination: '/learn/protocol-overview/matrix-packaging-overview',
+				permanent: true,
+			},
+			{
+				source: '/learn/mining-on-irys/efficient-sampling',
+				destination: '/learn/protocol-overview/efficient-sampling-overview',
 				permanent: true,
 			},
 		];