add PR #3805 saga, unbury script, contributor decay diagram, looping SVG animations, CLAUDE.md style guide

expand "our" section: real Pylons org stats (28 lifetime, 4 active), PR rejection & pivot to downstream migration of 33 repos, BDFL commentary. embed unbury.py source & downloadable file. new contributor-decay diagram. update load-bearing diagram with org-wide data. fix #333333 text on gold nodes. convert all 8 SVG animations from one-shot to infinite loop (13s hold, fade out, restart). add unturf SVG diagram style guide to CLAUDE.md.

CLAUDE.md

@@ -221,6 +221,65 @@ venv/bin/python lib/tag_stats.py 5     # only tags with 5+ posts
 - Tags should be capitalized (e.g., "Python" not "python")
 - Avoid single-use tags; consolidate into broader categories
 
+## UNTURF SVG DIAGRAM STYLE GUIDE
+
+**All diagrams on russell.ballestrini.net & permacomputer sites follow this style.**
+
+### Color Palette (dark/light theme compatible)
+- **Background**: always `transparent` (never white or black)
+- **Node fills**: medium-dark saturated colors with `fill="white"` text
+  - Blues: `#4a90d9`, `#1e88e5`, `#0d47a1`, `#1a237e`
+  - Purples: `#9370db`, `#7b68ee`, `#6c5ce7`, `#4a148c`, `#ab47bc`
+  - Greens: `#7cb342`, `#1b5e20`, `#00897b`
+  - Teals: `#00acc1`, `#006064`
+  - Oranges: `#e65100`, `#e8834a`, `#ff6f00`
+  - Reds: `#bf360c`, `#b71c1c`, `#880e4f`
+  - Dark neutrals: `#2c3e50`, `#34495e`, `#546e7a`, `#616161`, `#4e342e`
+- **Gold/yellow nodes** (`#f9a825`, `#fdd835`): use `fill="#1a1a1a"` text (NOT `#333333`)
+- **Node strokes**: `#999999` (never black)
+- **Edges/arrows**: `#aaaaaa` stroke & fill
+- **Floating text labels**: `#cccccc` (cluster labels, "translates to", etc.)
+- **Accent text**: `#ef5350` (red warnings/claims), `#ff6f00` (orange highlights), `#66ff66` (green positive)
+- **Dashed cluster borders**: `stroke="#999999" stroke-dasharray="5,2"`
+- **Plaintext labels** (no background): `fill="transparent"` polygon, text `fill="#cccccc"`
+
+### SVG Dimensions
+- Root SVG: `width="100%" height="100%"` with `viewBox` (never fixed pt/px)
+- RST embed: `:width: 100%` and `:align: center`
+
+### Animation Pattern (CSS only, no JS)
+```xml
+<defs>
+<style type="text/css">
+@keyframes fadeIn {
+  from { opacity: 0; }
+  to { opacity: 1; }
+}
+.anim { opacity: 0; animation: fadeIn 0.8s ease-out forwards; }
+.d0 { animation-delay: 0s; }
+.d1 { animation-delay: 3s; }
+/* ... increment by 2-3s per group */
+</style>
+</defs>
+```
+- Wrap each conceptual group in `<g class="anim dN">`
+- Groups fade in sequentially (3s apart for major concepts, 1-2s for chain elements)
+- Keep total animation under 30s
+
+### Graphviz Dot Conventions
+```dot
+bgcolor="transparent"
+node [fontname="Helvetica" fontsize=12 style="filled,rounded" shape=box color="#999999"]
+edge [color="#AAAAAA" arrowsize=0.6 fontcolor="#AAAAAA"]
+```
+
+### Post-Processing Checklist
+1. Strip `<title>` tags: `sed -i 's/<title>[^<]*<\/title>//g'` (prevents tooltip artifacts)
+2. Replace fixed dimensions: `width="100%" height="100%"` keeping viewBox
+3. Change cluster label fontcolor from `#aaaaaa` to `#cccccc`
+4. Wrap groups with animation classes
+5. Verify: no `fill="black"`, no `stroke="black"`, no `fill="#333333"`
+
 ## RUSSELL'S PROJECT TECH STACKS
 
 **NEVER assume or guess what language/framework a project uses. Check the actual repo.**