perf: optimize release profile for smaller binary size

Configure release profile with aggressive size optimizations:
- Set opt-level to 'z' for minimum binary size
- Enable LTO for better optimization across crates
- Strip debug info to reduce final binary size
- Use panic=abort to eliminate unwinding machinery
- Reduce codegen units to 1 for maximum optimization
- Keep overflow checks for safety in production

Cargo.toml

@@ -18,3 +18,11 @@ tokio = { version = "1", features = ["macros"] }
 tokio-stream = "0.1.17"
 tracing = "0.1"
 tracing-subscriber = { version = "0.3", features = ["env-filter"] }
+
+[profile.release]
+opt-level = "z"
+lto = true
+strip = "debuginfo"
+panic = "abort"
+codegen-units = 1
+overflow-checks = true