feat(stickers): add build-tools-not-empires design

First active mycopunk sticker design featuring bioluminescent
mycelium network with anarchist message "Build Tools Not Empires"

Also fixes date rendering bug in design list command

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

cli/mycopunk/design.py

@@ -252,12 +252,16 @@ def list_designs(status: Optional[str] = None, design_type: Optional[str] = None
             product_count = len(products)
 
             designs_found += 1
+            created = metadata.get("created", "unknown")
+            # Convert date objects to string for Rich table
+            if hasattr(created, "isoformat"):
+                created = created.isoformat()
             table.add_row(
                 f"{category_dir.name}/{design_dir.name}",
                 metadata.get("name", design_dir.name),
                 design_status,
                 str(product_count),
-                metadata.get("created", "unknown"),
+                str(created),
             )
 
     if designs_found == 0:

designs/stickers/build-tools-not-empires/build-tools-not-empires.svg

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     width="1200"
+     height="1200"
+     viewBox="0 0 1200 1200">
+  <!--
+    Mycopunk Design: Build Tools Not Empires
+    Template: sticker-4x4
+    Canvas: 1200x1200 px @ 300 DPI
+
+    Replace this content with your design.
+  -->
+  <rect width="100%" height="100%" fill="none" stroke="#ccc" stroke-width="2" stroke-dasharray="10,10"/>
+  <text x="50%" y="50%" text-anchor="middle" fill="#999" font-family="sans-serif" font-size="48">
+    Build Tools Not Empires
+  </text>
+</svg>

designs/stickers/build-tools-not-empires/metadata.yaml

@@ -0,0 +1,30 @@
+name: "Build Tools Not Empires"
+slug: build-tools-not-empires
+description: "Mycelial network design with anarchist message - decentralize everything"
+tags: [mycopunk, mycelium, anarchism, decentralization, tools, punk]
+created: 2026-01-24
+author: jeff
+
+source:
+  file: build-tools-not-empires.png
+  format: png
+  dimensions:
+    width: 1024
+    height: 1024
+  dpi: 300
+  color_profile: sRGB
+
+products:
+  - type: sticker
+    provider: prodigi
+    sku: GLOBAL-STI-KIS-3X3
+    variants: [matte, gloss]
+    retail_price: 3.50
+
+  - type: sticker
+    provider: printful
+    sku: 358
+    variants: [white]
+    retail_price: 3.50
+
+status: active

designs/stickers/spore-spiral/metadata.yaml

@@ -0,0 +1,24 @@
+name: "Spore Spiral"
+slug: spore-spiral
+description: "Description of your design"
+tags: [mycopunk, mycelium]
+created: 2026-01-24
+author: jeff
+
+source:
+  file: spore-spiral.svg
+  format: svg
+  dimensions:
+    width: 1200
+    height: 1200
+  dpi: 300
+  color_profile: sRGB
+
+products:
+  - type: sticker
+    provider: prodigi
+    sku: GLOBAL-STI-KIS-4X4
+    variants: [matte, gloss]
+    retail_price: 4.50
+
+status: draft

designs/stickers/spore-spiral/spore-spiral.svg

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     width="1200"
+     height="1200"
+     viewBox="0 0 1200 1200">
+  <!--
+    Mycopunk Design: Spore Spiral
+    Template: sticker-4x4
+    Canvas: 1200x1200 px @ 300 DPI
+
+    Replace this content with your design.
+  -->
+  <rect width="100%" height="100%" fill="none" stroke="#ccc" stroke-width="2" stroke-dasharray="10,10"/>
+  <text x="50%" y="50%" text-anchor="middle" fill="#999" font-family="sans-serif" font-size="48">
+    Spore Spiral
+  </text>
+</svg>

designs/stickers/test-spore/metadata.yaml

@@ -0,0 +1,24 @@
+name: "Test Spore"
+slug: test-spore
+description: "Description of your design"
+tags: [mycopunk, mycelium]
+created: 2026-01-24
+author: jeff
+
+source:
+  file: test-spore.svg
+  format: svg
+  dimensions:
+    width: 900
+    height: 900
+  dpi: 300
+  color_profile: sRGB
+
+products:
+  - type: sticker
+    provider: prodigi
+    sku: GLOBAL-STI-KIS-3X3
+    variants: [matte, gloss]
+    retail_price: 3.50
+
+status: draft

designs/stickers/test-spore/test-spore.svg

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     width="900"
+     height="900"
+     viewBox="0 0 900 900">
+  <!--
+    Mycopunk Design: Test Spore
+    Template: sticker-3x3
+    Canvas: 900x900 px @ 300 DPI
+
+    Replace this content with your design.
+  -->
+  <rect width="100%" height="100%" fill="none" stroke="#ccc" stroke-width="2" stroke-dasharray="10,10"/>
+  <text x="50%" y="50%" text-anchor="middle" fill="#999" font-family="sans-serif" font-size="48">
+    Test Spore
+  </text>
+</svg>