feat(roms): add Obsidian vault knowledge base for 75 library romhacks

build-romhack-vault.py generates pokemon-romhack-vault/: one note per hack
(YAML properties + tags + summary + links), an Index MOC (Dataview + static
table), a Types taxonomy, and per-platform MOCs. Dataset is the single source
of truth — edit + re-run to extend.

pokemon-romhack-vault/Hacks/Blaze Black 2 Redux.md

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+---
+title: "Pokémon Blaze Black 2 Redux"
+platform: NDS
+base: "Black 2"
+version: "1.3.0"
+status: "Complete"
+type: ["Vanilla+", "Difficulty", "Expansion"]
+generation: "Gen 1–5 mons"
+library_path: "roms/nds/Hacks/Pokemon - Blaze Black 2 Redux (Hack).nds"
+source: "https://www.pokecommunity.com/"
+added: 2026-06-06
+tags: ["hack", "platform/nds", "base/black2", "status/complete", "type/vanilla+", "type/difficulty", "type/expansion"]
+---
+# Pokémon Blaze Black 2 Redux
+
+> [!info] Vanilla+ · Difficulty · Expansion — **Complete**
+> Nintendo DS · base **Black 2** · version **1.3.0** · Gen 1–5 mons
+
+## Summary
+A community 'Redux' fork of Drayano's Blaze Black 2 — expanded availability, rebalanced difficulty, and extra content.
+
+## Type
+[[Types#Vanilla+|Vanilla+]] [[Types#Difficulty|Difficulty]] [[Types#Expansion|Expansion]]
+
+## Links
+- Source / info: https://www.pokecommunity.com/
+- Lookup: https://duckduckgo.com/?q=Pok%C3%A9mon%20Blaze%20Black%202%20Redux%20rom%20hack
+
+## In the library
+- `roms/nds/Hacks/Pokemon - Blaze Black 2 Redux (Hack).nds` on valhalla
+- Patch/source artifact archived under `/storage1/igir/romhacks/patches/`
+
+[[Index|← back to directory]]