docs: replace Windows screenshot with current Mac CLI output (SVG)

Old docs/lpx-help.png was from the original Windows build — showed
the old tagline, qwen2.5:3b default, and missing voice/watch commands.

Replace with docs/lpx-help.svg generated via Rich from the live CLI,
showing the current state: cloud AI tagline, llama3:8b default,
all 10 commands including voice and watch.

Add docs/capture_help.py to regenerate the SVG in future.

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

Author: semanticintent

README.md

@@ -13,7 +13,7 @@ A local CLI log parser powered by [Ollama](https://ollama.com). Runs entirely on
 
 Part of [Millpond AI](https://millpond.ai).
 
-![LogParseIQX CLI](docs/lpx-help.png)
+![LogParseIQX CLI](docs/lpx-help.svg)
 
 ---
 

docs/capture_help.py

@@ -0,0 +1,37 @@
+"""Generate docs/lpx-help.svg from current CLI --help output."""
+import sys, pathlib, subprocess
+
+# Run lpx --help using the same python that's running this script
+out = subprocess.run(
+    [sys.executable, "-m", "logparseiqx", "--help"],
+    capture_output=True, text=True
+)
+help_text = out.stdout.strip() or out.stderr.strip()
+
+from rich.console import Console
+
+svg_path = pathlib.Path(__file__).parent / "lpx-help.svg"
+
+console = Console(record=True, width=88, force_terminal=True, color_system="truecolor")
+console.print(
+    f"[bold green](.venv)[/bold green] [cyan]dev@Mac logparseiqx[/cyan] "
+    f"[white]%[/white] [bold white]lpx --help[/bold white]"
+)
+console.print()
+for line in help_text.splitlines():
+    # Colour the command names in the Commands section
+    if line.startswith("  ") and not line.startswith("   ") and "  " in line.strip():
+        parts = line.split(None, 1)
+        if len(parts) == 2:
+            console.print(f"  [bold cyan]{parts[0]:<11}[/bold cyan]{parts[1]}")
+            continue
+    console.print(line)
+console.print()
+console.print(
+    f"[bold green](.venv)[/bold green] [cyan]dev@Mac logparseiqx[/cyan] "
+    f"[white]%[/white] [dim]▌[/dim]"
+)
+
+svg = console.export_svg(title="LogParseIQX — lpx --help")
+svg_path.write_text(svg)
+print(f"Saved: {svg_path}")