Replace batch DAG system with streaming architecture

- Remove legacy_tasks.py, hybrid_state.py, render.py
- Remove old task modules (analyze, execute, execute_sexp, orchestrate)
- Add streaming interpreter from test repo
- Add sexp_effects with primitives and video effects
- Add streaming Celery task with CID-based asset resolution
- Support both CID and friendly name references for assets
- Add .dockerignore to prevent local clones from conflicting

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

sexp_effects/primitive_libs/drawing.py

@@ -0,0 +1,136 @@
+"""
+Drawing Primitives Library
+
+Draw shapes, text, and characters on images.
+"""
+import numpy as np
+import cv2
+from PIL import Image, ImageDraw, ImageFont
+
+
+# Default font (will be loaded lazily)
+_default_font = None
+
+
+def _get_default_font(size=16):
+    """Get default font, creating if needed."""
+    global _default_font
+    if _default_font is None or _default_font.size != size:
+        try:
+            _default_font = ImageFont.truetype("/usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf", size)
+        except:
+            _default_font = ImageFont.load_default()
+    return _default_font
+
+
+def prim_draw_char(img, char, x, y, font_size=16, color=None):
+    """Draw a single character at (x, y)."""
+    if color is None:
+        color = [255, 255, 255]
+
+    pil_img = Image.fromarray(img)
+    draw = ImageDraw.Draw(pil_img)
+    font = _get_default_font(font_size)
+    draw.text((x, y), char, fill=tuple(color), font=font)
+    return np.array(pil_img)
+
+
+def prim_draw_text(img, text, x, y, font_size=16, color=None):
+    """Draw text string at (x, y)."""
+    if color is None:
+        color = [255, 255, 255]
+
+    pil_img = Image.fromarray(img)
+    draw = ImageDraw.Draw(pil_img)
+    font = _get_default_font(font_size)
+    draw.text((x, y), text, fill=tuple(color), font=font)
+    return np.array(pil_img)
+
+
+def prim_fill_rect(img, x, y, w, h, color=None):
+    """Fill a rectangle with color."""
+    if color is None:
+        color = [255, 255, 255]
+
+    result = img.copy()
+    x, y, w, h = int(x), int(y), int(w), int(h)
+    result[y:y+h, x:x+w] = color
+    return result
+
+
+def prim_draw_rect(img, x, y, w, h, color=None, thickness=1):
+    """Draw rectangle outline."""
+    if color is None:
+        color = [255, 255, 255]
+
+    result = img.copy()
+    cv2.rectangle(result, (int(x), int(y)), (int(x+w), int(y+h)),
+                  tuple(color), thickness)
+    return result
+
+
+def prim_draw_line(img, x1, y1, x2, y2, color=None, thickness=1):
+    """Draw a line from (x1, y1) to (x2, y2)."""
+    if color is None:
+        color = [255, 255, 255]
+
+    result = img.copy()
+    cv2.line(result, (int(x1), int(y1)), (int(x2), int(y2)),
+             tuple(color), thickness)
+    return result
+
+
+def prim_draw_circle(img, cx, cy, radius, color=None, thickness=1, fill=False):
+    """Draw a circle."""
+    if color is None:
+        color = [255, 255, 255]
+
+    result = img.copy()
+    t = -1 if fill else thickness
+    cv2.circle(result, (int(cx), int(cy)), int(radius), tuple(color), t)
+    return result
+
+
+def prim_draw_ellipse(img, cx, cy, rx, ry, angle=0, color=None, thickness=1, fill=False):
+    """Draw an ellipse."""
+    if color is None:
+        color = [255, 255, 255]
+
+    result = img.copy()
+    t = -1 if fill else thickness
+    cv2.ellipse(result, (int(cx), int(cy)), (int(rx), int(ry)),
+                angle, 0, 360, tuple(color), t)
+    return result
+
+
+def prim_draw_polygon(img, points, color=None, thickness=1, fill=False):
+    """Draw a polygon from list of [x, y] points."""
+    if color is None:
+        color = [255, 255, 255]
+
+    result = img.copy()
+    pts = np.array(points, dtype=np.int32).reshape((-1, 1, 2))
+
+    if fill:
+        cv2.fillPoly(result, [pts], tuple(color))
+    else:
+        cv2.polylines(result, [pts], True, tuple(color), thickness)
+
+    return result
+
+
+PRIMITIVES = {
+    # Text
+    'draw-char': prim_draw_char,
+    'draw-text': prim_draw_text,
+
+    # Rectangles
+    'fill-rect': prim_fill_rect,
+    'draw-rect': prim_draw_rect,
+
+    # Lines and shapes
+    'draw-line': prim_draw_line,
+    'draw-circle': prim_draw_circle,
+    'draw-ellipse': prim_draw_ellipse,
+    'draw-polygon': prim_draw_polygon,
+}