docs: fix formatting and consistency issues in README

- Fix mixed full-width/half-width brackets in description and prerequisites
- Add separator in hardware table for storage options
- Fix incorrect Shasta link text (shastaex.io -> shasta.tronex.io)
- Unify Resources section with consistent description format
- Replace Gitter badge with Discord badge

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: vividcoder

README.md

@@ -7,7 +7,7 @@
 </h4>
 
 <p align="center">
-  <a href="https://gitter.im/tronprotocol/allcoredev"><img src="https://img.shields.io/gitter/room/tronprotocol/java-tron.svg"></a>
+  <a href="https://discord.gg/hqKvyAM"><img src="https://img.shields.io/badge/chat-on%20discord-7289da.svg"></a>
   <a href="https://codecov.io/gh/tronprotocol/java-tron"><img src="https://codecov.io/gh/tronprotocol/java-tron/branch/develop/graph/badge.svg" /></a>
   <a href="https://github.com/tronprotocol/java-tron/issues"><img src="https://img.shields.io/github/issues/tronprotocol/java-tron.svg"></a>
   <a href="https://github.com/tronprotocol/java-tron/pulls"><img src="https://img.shields.io/github/issues-pr/tronprotocol/java-tron.svg"></a>
@@ -31,14 +31,14 @@
 
 TRON is building the foundational infrastructure for the decentralized internet ecosystem with a focus on high-performance, scalability, and security.
 
-- TRON Protocol: High-throughput（2000+ TPS), scalable blockchain OS (DPoS consensus) powering the TRON ecosystem.
+- TRON Protocol: High-throughput (2000+ TPS), scalable blockchain OS (DPoS consensus) powering the TRON ecosystem.
 - TRON Virtual Machine (TVM): EVM-compatible smart-contract engine for fast smart-contract execution.
 
 # Building the Source Code
 Before building java-tron, make sure you have:
 - Hardware with at least 4 CPU cores, 16 GB RAM, 10 GB free disk space for a smooth compilation process.
 - Operating system: `Linux` or `macOS` (`Windows` is not supported).
-- Git and correct JDK（version `8` or `17`） installed based on your CPU architecture.
+- Git and correct JDK (version `8` or `17`) installed based on your CPU architecture.
 
 There are two ways to install the required dependencies:
 
@@ -84,7 +84,7 @@ The java-tron project comes with several runnable artifacts and helper scripts f
 | Deployment Tier | CPU Cores | Memory | High-performance SSD Storage    | Network Downstream |
 |--------------------------|-------|--------|---------------------------|-----------------|
 | FullNode (Minimum)        | 8 | 16 GB | 200 GB ([Lite](https://tronprotocol.github.io/documentation-en/using_javatron/litefullnode/#lite-fullnode))                  | ≥ 5 MBit/sec  |
-| FullNode (Stable)         | 8 | 32 GB | 200 GB (Lite) 3.5 TB (Full) | ≥ 5 MBit/sec  |
+| FullNode (Stable)         | 8 | 32 GB | 200 GB (Lite) / 3.5 TB (Full) | ≥ 5 MBit/sec  |
 | FullNode (Recommend)      | 16+ | 32 GB+ | 4 TB         | ≥ 50 MBit/sec  |
 | Super Representative      | 32+ | 64 GB+ | 4 TB              | ≥ 50 MBit/sec  |
 
@@ -139,7 +139,7 @@ Nile resources: explorer, faucet, wallet, developer docs, and network statistics
 ### 3. Access Shasta test network
 Shasta does not accept public node peers. Programmatic access is available via TronGrid endpoints; see [TronGrid Service](https://developers.tron.network/docs/trongrid) for details.
 
-Shasta resources: explorer, faucet, wallet, developer docs, and network statistics at [shastaex.io](https://shasta.tronex.io/).
+Shasta resources: explorer, faucet, wallet, developer docs, and network statistics at [shasta.tronex.io](https://shasta.tronex.io/).
 
 ### 4. Set up a private network
 To set up a private network for testing or development, follow the [Private Network guidance](https://tronprotocol.github.io/documentation-en/using_javatron/private_network/).
@@ -201,14 +201,14 @@ Thank you for considering to help out with the source code! If you'd like to con
 
 # Resources
 
-- [Medium](https://medium.com/@coredevs) java-tron's official technical articles are published there.
-- [Documentation](https://tronprotocol.github.io/documentation-en/) and [TRON Developer Hub](https://developers.tron.network/) serve as java-tron’s primary documentation websites.
-- [TronScan](https://tronscan.org/#/) TRON main network blockchain browser.
-- [Nile Test network](http://nileex.io/) A stable test network of TRON contributed by TRON community.
-- [Shasta Test network](https://shasta.tronex.io/) A stable test network of TRON contributed by TRON community.
-- [Wallet-cli](https://github.com/tronprotocol/wallet-cli) TRON network wallet using command line.
-- [TIP](https://github.com/tronprotocol/tips) TRON Improvement Proposal (TIP) describes standards for the TRON network.
-- [TP](https://github.com/tronprotocol/tips/tree/master/tp) TRON Protocol (TP) describes standards already implemented in TRON network but not published as a TIP.
+- [Medium](https://medium.com/@coredevs) — Official technical articles from the java-tron core development team.
+- [Documentation](https://tronprotocol.github.io/documentation-en/) and [TRON Developer Hub](https://developers.tron.network/) — Primary documentation for java-tron developers.
+- [TronScan](https://tronscan.org/#/) — TRON mainnet blockchain explorer.
+- [Nile Test Network](http://nileex.io/) — A stable test network for TRON development and testing.
+- [Shasta Test Network](https://shasta.tronex.io/) — A stable test network mirroring mainnet features.
+- [Wallet-cli](https://github.com/tronprotocol/wallet-cli) — Command-line wallet for the TRON network.
+- [TIP](https://github.com/tronprotocol/tips) — TRON Improvement Proposals describing standards for the TRON network.
+- [TP](https://github.com/tronprotocol/tips/tree/master/tp) — TRON Protocols already implemented but not yet published as TIPs.
 
 # Integrity Check