feat: major platform expansion — Brain service, RSS reader, iOS app, AI assistants, Firefox extension

Brain Service:
- Playwright stealth crawler replacing browserless (og:image, Readability, Reddit JSON API)
- AI classification with tag definitions and folder assignment
- YouTube video download via yt-dlp
- Karakeep migration complete (96 items)
- Taxonomy management (folders with icons/colors, tags)
- Discovery shuffle, sort options, search (Meilisearch + pgvector)
- Item tag/folder editing, card color accents

RSS Reader Service:
- Custom FastAPI reader replacing Miniflux
- Feed management (add/delete/refresh), category support
- Full article extraction via Readability
- Background content fetching for new entries
- Mark all read with confirmation
- Infinite scroll, retention cleanup (30/60 day)
- 17 feeds migrated from Miniflux

iOS App (SwiftUI):
- Native iOS 17+ app with @Observable architecture
- Cookie-based auth, configurable gateway URL
- Dashboard with custom background photo + frosted glass widgets
- Full fitness module (today/templates/goals/food library)
- AI assistant chat (fitness + brain, raw JSON state management)
- 120fps ProMotion support

AI Assistants (Gateway):
- Unified dispatcher with fitness/brain domain detection
- Fitness: natural language food logging, photo analysis, multi-item splitting
- Brain: save/append/update/delete notes, search & answer, undo support
- Madiha user gets fitness-only (brain disabled)

Firefox Extension:
- One-click save to Brain from any page
- Login with platform credentials
- Right-click context menu (save page/link/image)
- Notes field for URL saves
- Signed and published on AMO

Other:
- Reader bookmark button routes to Brain (was Karakeep)
- Fitness food library with "Add" button + add-to-meal popup
- Kindle send file size check (25MB SMTP2GO limit)
- Atelier UI as default (useAtelierShell=true)
- Mobile upload box in nav drawer

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

services/brain/app/config.py

@@ -17,8 +17,8 @@ MEILI_URL = os.environ.get("MEILI_URL", "http://brain-meili:7700")
 MEILI_KEY = os.environ.get("MEILI_MASTER_KEY", "brain-meili-key")
 MEILI_INDEX = "items"
 
-# ── Browserless ──
-BROWSERLESS_URL = os.environ.get("BROWSERLESS_URL", "http://brain-browserless:3000")
+# ── Crawler ──
+CRAWLER_URL = os.environ.get("CRAWLER_URL", "http://brain-crawler:3100")
 
 # ── OpenAI ──
 OPENAI_API_KEY = os.environ.get("OPENAI_API_KEY", "")
@@ -42,14 +42,14 @@ DEBUG = os.environ.get("DEBUG", "").lower() in ("1", "true")
 
 # ── Classification rules ──
 FOLDERS = [
-    "Home", "Family", "Work", "Travel", "Knowledge", "Faith", "Projects"
+    "Home", "Family", "Work", "Travel", "Islam",
+    "Homelab", "Vanlife", "3D Printing", "Documents",
 ]
 
 TAGS = [
-    "reference", "important", "legal", "financial", "insurance",
-    "research", "idea", "guide", "tutorial", "setup", "how-to",
-    "tools", "dev", "server", "selfhosted", "home-assistant",
-    "shopping", "compare", "buy", "product",
-    "family", "kids", "health", "travel", "faith",
-    "video", "read-later", "books",
+    "diy", "reference", "home-assistant", "shopping", "video",
+    "tutorial", "server", "kids", "books", "travel",
+    "churning", "lawn-garden", "piracy", "work", "3d-printing",
+    "lectures", "vanlife", "yusuf", "madiha", "hafsa", "mustafa",
+    "medical", "legal", "vehicle", "insurance", "financial", "homeschool",
 ]