feat: add DiceBear avatar proxy with style picker on signup and profile pages

Implement avatar generation via local proxy at `/avatar/{style}/{seed}` that fetches from DiceBear 9.x API with in-memory caching and fallback to initial-based SVG. Add avatar style selection dropdown to signup form and profile edit page, storing `avatar_style` in user records. Update comment rendering to support nested threading with parent-child relationships in post view. Add `avatar_url` and `avatar_styles` template globals, register avatar router in main app, and include avatar CSS classes for rounded image display.
2026-05-10 19:33:53 +00:00
parent 15a3b990fe
commit f4343c3d05
26 changed files with 745 additions and 456 deletions
@@ -0,0 +1,40 @@
+import logging
+
+logger = logging.getLogger(__name__)
+
+AVATAR_STYLES = [
+    "adventurer",
+    "adventurer-neutral",
+    "avataaars",
+    "big-ears",
+    "big-smile",
+    "bottts",
+    "croodles",
+    "fun-emoji",
+    "identicon",
+    "initials",
+    "lorelei",
+    "micah",
+    "miniavs",
+    "notionists",
+    "open-peeps",
+    "personas",
+    "pixel-art",
+    "shapes",
+    "thumbs",
+]
+
+DICEBEAR_BASE = "https://api.dicebear.com/9.x"
+
+
+def avatar_url(style: str, seed: str, size: int = 128) -> str:
+    style = style or "initials"
+    return f"/avatar/{style}/{seed}?size={size}"
+
+
+def dicebear_proxy_url(style: str, seed: str, size: int = 128) -> str:
+    return f"{DICEBEAR_BASE}/{style}/svg?seed={seed}&size={size}"
+
+
+def avatar_styles():
+    return AVATAR_STYLES