Add game data seeding from PokeAPI with level ranges

Seed the database with Pokemon game data for 5 games (FireRed, LeafGreen,
Emerald, HeartGold, SoulSilver) using pokebase. Includes Alembic migrations
for route unique constraints and encounter level ranges, a two-phase seed
system (offline fetch to JSON, then idempotent upserts), and Dockerfile
updates for the seed runner.

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

.beans/nuzlocke-tracker-k5lm--pokemon-game-database.md

@@ -1,31 +1,34 @@
 ---
 # nuzlocke-tracker-k5lm
 title: Initial Game Data Seeding
-status: todo
+status: completed
 type: task
 priority: normal
 created_at: 2026-02-04T15:44:12Z
-updated_at: 2026-02-04T15:47:29Z
+updated_at: 2026-02-05T13:37:50Z
 parent: nuzlocke-tracker-f5ob
 ---
 
 Create seed data for the database with initial games, routes, and Pokémon.
 
 ## Checklist
-- [ ] Research and compile data for MVP games:
-  - [ ] Pokémon FireRed/LeafGreen (Gen 3 Kanto remakes - popular for Nuzlockes)
-  - [ ] Pokémon Emerald (Gen 3 Hoenn)
-  - [ ] Pokémon HeartGold/SoulSilver (Gen 4 Johto remakes)
-- [ ] For each game, gather:
-  - [ ] All routes/areas in progression order
-  - [ ] Available wild Pokémon per route
-  - [ ] Encounter methods (grass, surf, fish, etc.)
-- [ ] Create seed scripts/migrations to populate database
-- [ ] Include Pokémon base data (national dex, names, types, sprite URLs)
-- [ ] Document data sources for attribution
+- [x] Research and compile data for MVP games:
+  - [x] Pokémon FireRed/LeafGreen (Gen 3 Kanto remakes - popular for Nuzlockes)
+  - [x] Pokémon Emerald (Gen 3 Hoenn)
+  - [x] Pokémon HeartGold/SoulSilver (Gen 4 Johto remakes)
+- [x] For each game, gather:
+  - [x] All routes/areas in progression order
+  - [x] Available wild Pokémon per route
+  - [x] Encounter methods (grass, surf, fish, etc.)
+- [x] Create seed scripts/migrations to populate database
+- [x] Include Pokémon base data (national dex, names, types, sprite URLs)
+- [x] Document data sources for attribution
+- [x] Curate route ordering to match game progression — split to nuzlocke-tracker-j28y
 
 ## Notes
-- Use PokeAPI or Bulbapedia as data sources
 - Admin panel allows adding more games later
 - Focus on accuracy for the 3 MVP games
-- Sprite URLs can point to existing sprite repositories
+
+## Data Sources
+- Game data (routes, encounters, Pokemon): [PokeAPI](https://pokeapi.co/) via [pokebase](https://github.com/PokeAPI/pokebase) Python wrapper
+- Sprites: [PokeAPI/sprites](https://github.com/PokeAPI/sprites) on GitHub