Update database paths and fix foreign key references across coordinator API

- Change SQLite database path from `/home/oib/windsurf/aitbc/data/` to `/opt/data/`
- Fix foreign key references to use correct table names (users, wallets, gpu_registry)
- Replace governance router with new governance and community routers
- Add multi-modal RL router to main application
- Simplify DEPLOYMENT_READINESS_REPORT.md to focus on production deployment status
- Update governance router with decentralized DAO voting

hardhat.config.cjs

@@ -0,0 +1,55 @@
+require("@nomicfoundation/hardhat-toolbox");
+
+/** @type import('hardhat/config/types').HardhatUserConfig */
+module.exports = {
+  solidity: {
+    version: "0.8.19",
+    settings: {
+      optimizer: {
+        enabled: true,
+        runs: 200
+      },
+      viaIR: true
+    }
+  },
+  networks: {
+    hardhat: {
+      forking: {
+        url: process.env.MAINNET_RPC_URL || "http://localhost:8545",
+        blockNumber: parseInt(process.env.FORK_BLOCK_NUMBER) || undefined
+      }
+    },
+    localhost: {
+      url: "http://127.0.0.1:8545"
+    },
+    testnet: {
+      url: process.env.TESTNET_RPC_URL || "http://localhost:8545",
+      accounts: process.env.PRIVATE_KEY ? [process.env.PRIVATE_KEY] : [],
+      chainId: 31337
+    },
+    mainnet: {
+      url: process.env.MAINNET_RPC_URL,
+      accounts: process.env.PRIVATE_KEY ? [process.env.PRIVATE_KEY] : [],
+      chainId: 1
+    }
+  },
+  etherscan: {
+    apiKey: process.env.ETHERSCAN_API_KEY
+  },
+  gasReporter: {
+    enabled: process.env.REPORT_GAS !== undefined,
+    currency: "USD",
+    gasPrice: 20,
+    showTimeSpent: true,
+    showMethodSig: true
+  },
+  paths: {
+    sources: "./contracts",
+    tests: "./test/contracts",
+    cache: "./cache",
+    artifacts: "./artifacts"
+  },
+  mocha: {
+    timeout: 300000
+  }
+};