Fix deprecation warnings and add aarch64 build support

[juntao]

Summary

• Remove usage of deprecated realtime_ws module from main.rs
• Add #![allow(deprecated)] to realtime_ws.rs for internal usage
• Add RUSTFLAGS with fp16 target feature for aarch64 builds in CI
• Update README with aarch64 build instructions

Test plan

• Verify build compiles without warnings locally
• CI build passes for x86_64
• CI build passes for aarch64

🤖 Generated with Claude Code

[codeprotapp]

CodeProt AI is analyzing the changes... ⏳

[codeprotapp]

🤖 CodeProt AI - Free Version PR Summary

Overview
Removes unused StableRealtimeConfig initialization and conditional WebSocket handler registration from main routing logic. Adds #![allow(deprecated)] attribute to realtime_ws module to suppress deprecation warnings.

Technical Summary

• Deleted unused real_config variable and associated ASR configuration matching logic
• Removed conditional WebSocket route registration for /v1/realtime endpoint
• Changed pattern matching to use wildcard bindings (tts: _, asr: _) instead of named bindings
• Added module-level deprecation suppression in realtime_ws.rs
• Appears to be disabling realtime WebSocket functionality entirely

Issues Found

• Critical Logic Change: The realtime WebSocket endpoint /v1/realtime is now completely removed from routing. This breaks existing API functionality if clients depend on this endpoint. No migration path or deprecation notice provided.
• Incomplete Refactoring: The realtime_ws.rs module still exists with #![allow(deprecated)] but is no longer registered as a route, suggesting dead code that should be removed or the deprecation should be properly addressed.
• Missing Context: No explanation for why the realtime functionality is being disabled. This should be documented in commit message or issue tracking.
• Potential Bug: If StableRealtimeConfig is still used elsewhere in the codebase, removing this initialization could cause runtime failures in other modules.

---

🆓 You are using CodeProt AI Free Version

Free Version Features:

• ✅ Basic code change summary
• ✅ Simple PR description generation
• ✅ Basic issue detection and analysis
• ⚠️ Limited AI token quota
• ⚠️ Basic functionality experience

Upgrade to Premium Version for:

• 🚀 Complete PR Description Generation - Detailed change analysis and file-level summaries
• 🎯 Smart Labels and Classification - Automatic PR type identification and label generation
• 📊 Advanced Code Review - In-depth code quality analysis and suggestions
• 🔍 Security Vulnerability Detection - Professional security code scanning
• ⚡ Unlimited AI Tokens - Unrestricted AI analysis capabilities
• 🛠️ Custom Configuration - Personalized review rules and templates
• 🔧 Advanced Issue Detection - Comprehensive bug detection and code quality analysis

🌟 Upgrade to Premium Version Now

Visit https://codeprot.com/pricing to learn more about features and pricing details.

---

CodeProt AI - Making Code Review Smarter, Making Development More Efficient

Upgrade Now or Contact Support

[Copilot]

Pull request overview

This PR addresses deprecation warnings by removing usage of the deprecated realtime_ws module from the main codebase while maintaining backward compatibility internally, and adds necessary build configuration for aarch64 architecture support.

Changes:

• Removed realtime_ws module usage from main.rs to eliminate deprecation warnings
• Added deprecation suppression within realtime_ws.rs for internal compatibility
• Configured aarch64 builds with fp16 target feature in CI and documentation

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
src/services/realtime_ws.rs	Added #![allow(deprecated)] attribute to suppress warnings within the module
src/main.rs	Removed imports and code related to StableRealtimeConfig and realtime WebSocket handler setup
README.md	Added build instructions for aarch64 with fp16 target feature flag
.github/workflows/release.yml	Added RUSTFLAGS environment variable for aarch64 build configuration

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

The pattern match now ignores both tts and asr fields. Consider using .. syntax to ignore remaining fields instead of explicitly listing them with _, which would be more maintainable if additional fields are added to the struct in the future.

Suggested change

	tts: _,
	asr: _,
	..