Import art/VFX asset packs + game-feel systems; normalize texture extensions to lowercase for LFS

Add BefourStudios SciFi environment packs, Gabriel Aguiar VFX, and the
ShaderCrew Toon Shader embedded packages, plus combat/enemy/wave/death
gameplay systems and supporting vault docs/screenshots.

Rename 11 vendor textures from uppercase .PNG/.HDR to lowercase so the
case-sensitive Git LFS filters (*.png/*.hdr) match on case-sensitive
filesystems (Linux CI, case-sensitive macOS), not just locally where
core.ignorecase=true masks the gap. Each .meta moved with its asset so
GUID references are preserved. All ~1000 binaries tracked via LFS.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Docs/Vault/00_Home/Home.md

@@ -12,7 +12,7 @@ Multiplayer game on **Unity DOTS** (Entities) + **Netcode for Entities** (server
 
 ## Map of Content
 
-- **Vision** → [[Pillars]] — design pillars & locked decisions
+- **Vision** → [[Pillars]] — design pillars & locked decisions · [[Identity]] — the fiction (sci-fi frontier colony)
 - **Game Design** → [[Systems_Index]] — per-system design docs
 - **Roadmap** → [[Milestones]] · [[Backlog]]
 - **Sessions** → `07_Sessions/2026/` — dated work logs (latest: [[2026-05-29_Project_Setup]])