fix: stream Vivado output live, remove broken normalize_port

JTAG: Start hw_server explicitly (Windows needs it), then run Vivado
TCL with Popen + line-by-line stdout streaming via callback so user
can see Vivado progress in real-time (not just on failure).

COM: Remove normalize_port — pyserial >= 3.0 handles COM>=10 prefix
internally. The manual \\.\ prefix was causing PermissionError(13)
on Windows where pyserial's own handling conflicted.

src/serial_monitor.py

@@ -7,7 +7,6 @@ Provides UartMonitor for continuous background monitoring.
 
 from __future__ import annotations
 
-import platform
 import re
 import threading
 import time
@@ -18,26 +17,6 @@ import serial
 import serial.tools.list_ports
 
 
-def normalize_port(port: str) -> str:
-    """Normalize a serial port name for the current platform.
-
-    On Windows, COM ports numbered >= 10 require the NT namespace
-    prefix (\\\\.\\COM11). Without it, CreateFile fails with
-    'Access denied' or 'file not found'.
-
-    Args:
-        port: Raw port name from config or detection.
-
-    Returns:
-        Normalized port name suitable for serial.Serial().
-    """
-    if platform.system() == "Windows":
-        match = re.match(r"^COM(\d+)$", port, re.IGNORECASE)
-        if match and int(match.group(1)) >= 10:
-            return rf"\\.\{port}"
-    return port
-
-
 @dataclass
 class BootInfo:
     """Parsed information extracted from Zynq boot output."""
@@ -190,7 +169,7 @@ def check_uart_available(
 
     # 3. Try to open and read
     try:
-        with serial.Serial(normalize_port(port), baudrate, timeout=timeout) as ser:
+        with serial.Serial(port, baudrate, timeout=timeout) as ser:
             ser.reset_input_buffer()
             lines: list[str] = []
             while ser.in_waiting:
@@ -228,7 +207,7 @@ def read_serial_stream(
         serial.SerialException: If the port cannot be opened.
     """
     lines: list[str] = []
-    with serial.Serial(normalize_port(port), baudrate, timeout=timeout) as ser:
+    with serial.Serial(port, baudrate, timeout=timeout) as ser:
         # Clear any pending data
         ser.reset_input_buffer()
         while ser.in_waiting:
@@ -264,7 +243,7 @@ def test_serial_version(
     import serial
 
     try:
-        with serial.Serial(normalize_port(port), baudrate, timeout=timeout) as ser:
+        with serial.Serial(port, baudrate, timeout=timeout) as ser:
             ser.reset_input_buffer()
             ser.reset_output_buffer()
 
@@ -405,7 +384,7 @@ class UartMonitor:
 
         # Quick port check before starting thread
         try:
-            test_ser = serial.Serial(normalize_port(self._port), self._baudrate, timeout=1)
+            test_ser = serial.Serial(self._port, self._baudrate, timeout=1)
             test_ser.close()
         except serial.SerialException as e:
             if self.on_error:
@@ -432,7 +411,7 @@ class UartMonitor:
         """Main read loop running in background thread."""
         try:
             ser = serial.Serial(
-                normalize_port(self._port),
+                self._port,
                 self._baudrate,
                 timeout=self._timeout,
             )