Parse mod entity classes into the data-mod catalog

[ptrlrd]

Part of full rendered modded cards. This produces the catalog the site renders for modded entities, after falling back main then beta then mod.

What it does

tools/parse_mod.py turns a mod's C# entity classes plus its localization JSON into the same per-language catalog shape the site already serves for base entities, written to data-mod/<key>/<lang>/{cards,relics,potions}.json.

It reuses the base-game parser machinery so modded cards render identically to base cards:

• description_resolver bakes the SmartFormat tokens ({Damage:diff()}, {IfUpgraded:show:...}, [gold] markup) into final text exactly as for base cards.
• The 33-field card schema and the type/rarity/target enums come from card_parser.

The mod-specific part is reading mechanics from the fluent builder calls (WithDamage, WithBlock, WithVar, WithKeyword, WithCostUpgradeBy, WithCalculatedDamage, HasEnergyCostX) rather than the decompiled game's DynamicVar declarations, and namespacing ids with the mod prefix (Eruption -> WATCHER-ERUPTION) so they never collide with base ids.

The mod's repo layout, id prefix, color, and languages all come from its data/mods.json entry, so adding another mod is config plus a checkout, no new code.

Verified against WatcherMod

90 cards, 8 relics, 4 potions across 7 languages (eng, deu, ita, jpn, kor, rus, zhs). Spot-checks all correct:

Card	Parsed
Eruption	cost 2, Attack/Basic, 9 dmg, cost->1 on upgrade
Vigilance	8 block, +4 on upgrade ("Gain 12 Block")
Perseverance	5 block, custom var Increase 2 (+1), both bump on upgrade
Halt	3 block + WrathBlock 9, both upgrade correctly
Collect	X-cost detected
Brilliance	calculated damage shown as base 12
Tranquility	Retain + Exhaust, cost->0 on upgrade

Quality scan across all 90 cards: zero leftover {} tokens, zero stray placeholders. Descriptions, names, types, and keywords localize per language.

Notes

• data-mod/ is committed like data-beta/ (served catalog data, regenerable from the mod repo).
• One potion (Bottled Miracle) shows its count as the runtime "X" because that number lives in an effect method rather than a builder call; everything else bakes its numbers in.
• Stacked on Add a curated mod-asset directory and /api/mods #493. Next: bake these to full card images on the CDN, serve the catalog from the backend, and wire the frontend fallback.

[ptrlrd]

Folded into #496, which delivers the whole modded-card feature (directory, ingest, parse, bake, backend serving, and frontend resolution) in one MR.