Release v3.5.0: performance, constants, bilingual docs

- Bump version to 3.5.0
- Performance: hot-path timing only when log_enabled/simulate; execute_parallel takes &[Arc<SwqosClient>]; shared HTTP client constants for SWQoS
- Code quality: validate_protocol_params extracted for buy/sell; BYTES_PER_ACCOUNT, MAX_INSTRUCTIONS_WARN, HTTP timeout constants; prefetch/syscall bypass comments
- Documentation: bilingual (EN + 中文) doc comments in execution, executor, perf, swqos; README/README_CN version and What's new in 3.5.0
- Add release_notes_v3.5.0.md

Co-authored-by: Cursor <cursoragent@cursor.com>

src/trading/core/params.rs

@@ -67,6 +67,12 @@ pub struct SwapParams {
     pub fixed_output_amount: Option<u64>,
     pub gas_fee_strategy: GasFeeStrategy,
     pub simulate: bool,
+    /// Whether to output SDK logs (from TradeConfig.log_enabled).
+    pub log_enabled: bool,
+    /// Whether to pin parallel submit tasks to cores (from TradeConfig.use_core_affinity).
+    pub use_core_affinity: bool,
+    /// Optional event receive time in microseconds (same scale as sol-parser-sdk clock::now_micros). Used as timing start when log_enabled.
+    pub grpc_recv_us: Option<i64>,
     /// Use exact SOL amount instructions (buy_exact_sol_in for PumpFun, buy_exact_quote_in for PumpSwap).
     /// When Some(true) or None (default), the exact SOL/quote amount is spent and slippage is applied to output tokens.
     /// When Some(false), uses regular buy instruction where slippage is applied to SOL/quote input.