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/Crystal Kaizo.md

@@ -0,0 +1,33 @@
+---
+title: "Pokémon Crystal Kaizo"
+platform: GBC
+base: "Crystal"
+version: "1.0"
+status: "Complete"
+type: ["Difficulty"]
+generation: "Gen 2"
+library_path: "roms/gbc/Hacks/Pokemon - Crystal Kaizo (Hack).gbc"
+source: "https://duckduckgo.com/?q=Pok%C3%A9mon%20Crystal%20Kaizo%20rom%20hack"
+added: 2026-06-06
+tags: ["hack", "platform/gbc", "base/crystal", "status/complete", "type/difficulty"]
+---
+# Pokémon Crystal Kaizo
+
+> [!info] Difficulty — **Complete**
+> Game Boy Color · base **Crystal** · version **1.0** · Gen 2
+
+## Summary
+The definitive Gen 2 kaizo: every trainer is a brutal, fully-EV'd gauntlet. Companion to the Gold/Silver Kaizo line.
+
+## Type
+[[Types#Difficulty|Difficulty]]
+
+## Links
+- Source: _(not catalogued — see lookup)_
+- Lookup: https://duckduckgo.com/?q=Pok%C3%A9mon%20Crystal%20Kaizo%20rom%20hack
+
+## In the library
+- `roms/gbc/Hacks/Pokemon - Crystal Kaizo (Hack).gbc` on valhalla
+- Patch/source artifact archived under `/storage1/igir/romhacks/patches/`
+
+[[Index|← back to directory]]