feat(integration): Complete feature rewrite with pipeline architecture, effects system, and display improvements

Major changes:
- Pipeline architecture with capability-based dependency resolution
- Effects plugin system with performance monitoring
- Display abstraction with multiple backends (terminal, null, websocket)
- Camera system for viewport scrolling
- Sensor framework for real-time input
- Command-and-control system via ntfy
- WebSocket display backend for browser clients
- Comprehensive test suite and documentation

Issue #48: ADR for preset scripting language included

This commit consolidates 110 individual commits into a single
feature integration that can be reviewed and tested before
further refinement.

scripts/render-diagrams.py

@@ -0,0 +1,49 @@
+#!/usr/bin/env python3
+"""Render Mermaid diagrams in markdown files to ASCII art."""
+
+import re
+import subprocess
+import sys
+
+
+def extract_mermaid_blocks(content: str) -> list[str]:
+    """Extract mermaid blocks from markdown."""
+    return re.findall(r"```mermaid\n(.*?)\n```", content, re.DOTALL)
+
+
+def render_diagram(block: str) -> str:
+    """Render a single mermaid block to ASCII."""
+    result = subprocess.run(
+        ["mermaid-ascii", "-f", "-"],
+        input=block,
+        capture_output=True,
+        text=True,
+    )
+    if result.returncode != 0:
+        return f"ERROR: {result.stderr}"
+    return result.stdout
+
+
+def main():
+    if len(sys.argv) < 2:
+        print("Usage: render-diagrams.py <markdown-file>")
+        sys.exit(1)
+
+    filename = sys.argv[1]
+    content = open(filename).read()
+    blocks = extract_mermaid_blocks(content)
+
+    print(f"Found {len(blocks)} mermaid diagram(s) in {filename}")
+    print()
+
+    for i, block in enumerate(blocks):
+        # Skip if empty
+        if not block.strip():
+            continue
+
+        print(f"=== Diagram {i + 1} ===")
+        print(render_diagram(block))
+
+
+if __name__ == "__main__":
+    main()