feat: v1.0.0 — UX polish, security hardening, code quality

UI/UX:
- Bill detail page tab UI (Analysis / Timeline / Votes / Notes)
- Topic tag pills on bill detail and listing pages — filtered to known
  topics, clickable, properly labelled via shared lib/topics.ts
- Notes panel always-open in Notes tab; sign-in prompt for guests
- Collapsible sidebar with icon-only mode and localStorage persistence
- Bills page defaults to has-text filter enabled
- Follow mode dropdown transparency fix
- Favicon (Landmark icon, blue background)

Security:
- Fernet encryption for ntfy passwords at rest (app/core/crypto.py)
- Separate ENCRYPTION_SECRET_KEY env var; falls back to JWT derivation
- ntfy_password no longer returned in GET response — replaced with
  ntfy_password_set: bool; NotificationSettingsUpdate type for writes
- JWT_SECRET_KEY fail-fast on startup if using default placeholder
- get_optional_user catches (JWTError, ValueError) only, not Exception

Bug fixes & code quality:
- Dashboard N+1 topic query replaced with single OR query
- notification_utils.py topic follower N+1 replaced with batch query
- Note query in bill detail page gated on token (enabled: !!token)
- search.py max_length=500 guard against oversized queries
- CollectionCreate.validate_name wired up with @field_validator
- LLM_RATE_LIMIT_RPM default raised from 10 to 50

Authored by: Jack Levy

frontend/app/topics/page.tsx

@@ -3,29 +3,7 @@
 import Link from "next/link";
 import { Tags } from "lucide-react";
 import { FollowButton } from "@/components/shared/FollowButton";
-
-const TOPICS = [
-  { tag: "healthcare", label: "Healthcare", desc: "Health policy, insurance, Medicare, Medicaid" },
-  { tag: "taxation", label: "Taxation", desc: "Tax law, IRS, fiscal policy" },
-  { tag: "defense", label: "Defense", desc: "Military, NDAA, national security" },
-  { tag: "education", label: "Education", desc: "Schools, student loans, higher education" },
-  { tag: "immigration", label: "Immigration", desc: "Border, visas, asylum, citizenship" },
-  { tag: "environment", label: "Environment", desc: "Climate, EPA, conservation, energy" },
-  { tag: "housing", label: "Housing", desc: "Affordable housing, mortgages, HUD" },
-  { tag: "infrastructure", label: "Infrastructure", desc: "Roads, bridges, broadband, transit" },
-  { tag: "technology", label: "Technology", desc: "AI, cybersecurity, telecom, internet" },
-  { tag: "agriculture", label: "Agriculture", desc: "Farm bill, USDA, food policy" },
-  { tag: "judiciary", label: "Judiciary", desc: "Courts, criminal justice, civil rights" },
-  { tag: "foreign-policy", label: "Foreign Policy", desc: "Diplomacy, foreign aid, sanctions" },
-  { tag: "veterans", label: "Veterans", desc: "VA, veteran benefits, military families" },
-  { tag: "social-security", label: "Social Security", desc: "SS, Medicare, retirement benefits" },
-  { tag: "trade", label: "Trade", desc: "Tariffs, trade agreements, WTO" },
-  { tag: "budget", label: "Budget", desc: "Appropriations, debt ceiling, spending" },
-  { tag: "energy", label: "Energy", desc: "Oil, gas, renewables, nuclear" },
-  { tag: "banking", label: "Banking", desc: "Financial regulation, Fed, CFPB" },
-  { tag: "transportation", label: "Transportation", desc: "FAA, DOT, aviation, rail" },
-  { tag: "labor", label: "Labor", desc: "Minimum wage, unions, OSHA, employment" },
-];
+import { TOPICS } from "@/lib/topics";
 
 export default function TopicsPage() {
   return (