Synthesize Round 3 research and standardize RESEARCH filenames.

Add DEM/scatter/LPC/icons/pipeline entries, expand high-risk notes, and index R01–R04 drafts via RESEARCH/README.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: TMHSDigital

.gitignore

@@ -1,5 +1,6 @@
 # Local research drafts (may contain bulky embeds)
-RESEARCH/
+RESEARCH/*
+!RESEARCH/README.md
 
 # Secrets / local env
 .env

CONTRIBUTING.md

@@ -44,4 +44,4 @@ This repo catalogs **links and metadata** for free (preferably commercially usab
 
 ## Research notes
 
-Local Gemini / deep-research drafts may live under `RESEARCH/` (gitignored). Promote durable findings into catalog entries and `docs/` — don’t rely on the draft as the public source of truth.
+Local Gemini / deep-research drafts live under `RESEARCH/` as `R0N-<topic>.md` (mostly gitignored; see [`docs/research-index.md`](docs/research-index.md)). Promote durable findings into catalog entries and `docs/` — don’t rely on drafts as the public source of truth.

README.md

@@ -86,6 +86,8 @@ High-signal CC0 / clearly permissive sources that cover most early production ne
 | Atlas-optimized kits | KayKit | [`catalog/3d/kaykit.md`](catalog/3d/kaykit.md) |
 | Seamless PBR materials | ambientCG | [`catalog/3d/ambientcg.md`](catalog/3d/ambientcg.md) |
 | HDRIs / calibrated env | Poly Haven | [`catalog/environment/poly-haven.md`](catalog/environment/poly-haven.md) |
+| Extra PBR + SBSAR | TextureCan | [`catalog/3d/texturecan.md`](catalog/3d/texturecan.md) |
+| UI icons (brand-free) | Lucide | [`catalog/2d/lucide-icons.md`](catalog/2d/lucide-icons.md) |
 | Hand-drawn 2D vectors | Glitch archive | [`catalog/2d/glitch-archive.md`](catalog/2d/glitch-archive.md) |
 | Input prompt icons | Xelu | [`catalog/2d/xelu-input-prompts.md`](catalog/2d/xelu-input-prompts.md) |
 | Pro SFX dumps | Sonniss #GameAudioGDC | [`catalog/audio/sonniss-gdc.md`](catalog/audio/sonniss-gdc.md) |
@@ -97,7 +99,7 @@ High-signal CC0 / clearly permissive sources that cover most early production ne
 
 ## Licenses & provenance
 
-Read [`docs/licenses.md`](docs/licenses.md), [`docs/provenance.md`](docs/provenance.md), [`docs/high-risk.md`](docs/high-risk.md), and [`docs/ai-assets.md`](docs/ai-assets.md) before mixing packs into a commercial build. Short version:
+Read [`docs/licenses.md`](docs/licenses.md), [`docs/provenance.md`](docs/provenance.md), [`docs/high-risk.md`](docs/high-risk.md), [`docs/ai-assets.md`](docs/ai-assets.md), and [`docs/trust-score.md`](docs/trust-score.md) before mixing packs into a commercial build. Research drafts: [`docs/research-index.md`](docs/research-index.md) (`R01`–`R04`). Short version:
 
 - **CC0** — safest default for closed-source games; attribution not required
 - **CC-BY** — commercial OK; keep credits
@@ -151,7 +153,7 @@ See [`CONTRIBUTING.md`](CONTRIBUTING.md) for the entry checklist and verificatio
 ├── LICENSE                ← CC0 for catalog metadata & docs
 ├── docs/
 │   ├── licenses.md / provenance.md / high-risk.md / ai-assets.md
-│   └── godot-budget-stack.md
+│   ├── trust-score.md / research-index.md / godot-budget-stack.md
 └── catalog/
     ├── TEMPLATE.md
     ├── 3d/ environment/ 2d/ characters/

RESEARCH/README.md

@@ -0,0 +1,14 @@
+# Research archive (local)
+
+Deep-research drafts live here. They are **gitignored** (often bulky / drafty) except this README.
+
+| ID | File | What it informed |
+| --- | --- | --- |
+| **R01** | `R01-curating-free-game-asset-resources.md` | Initial taxonomy, CC licenses, Kenney/KayKit/Sonniss seed catalog |
+| **R02** | `R02-godot-physics-production.md` | Godot tooling, provenance hygiene, industrial/tech kit notes |
+| **R03** | `R03-catalog-gaps-expansion.md` | Poly Haven, music, characters, TTS, AI policy, ODbL, high-risk list |
+| **R04** | `R04-catalog-round3.md` | DEM/scatter, LPC/2D, icons/a11y, pipeline compressors, Mixamo/Fab notes |
+
+Promote durable findings into `catalog/` and `docs/` — do not treat these drafts as the public source of truth.
+
+When adding a new Gemini report: save as `R0N-<short-kebab-topic>.md` and add a row above.

catalog/2d/README.md

@@ -4,10 +4,14 @@
 | --- | --- | --- | --- | --- |
 | [glitch-archive](glitch-archive.md) | Glitch archive | CC0 | yes | active |
 | [game-icons-net](game-icons-net.md) | Game-Icons.net | CC-BY-3.0 | yes | active |
+| [lucide-icons](lucide-icons.md) | Lucide Icons | ISC | yes | active |
+| [phosphor-icons](phosphor-icons.md) | Phosphor Icons | MIT | yes | active |
 | [xelu-input-prompts](xelu-input-prompts.md) | Xelu input prompts | CC0 | yes | active |
+| [universal-lpc-generator](universal-lpc-generator.md) | Universal LPC Generator | varies (SA) | yes* | needs-review |
+| [lpc-revised-basics](lpc-revised-basics.md) | LPC Revised Basics | varies (SA) | yes* | needs-review |
 | [opengameart](opengameart.md) | OpenGameArt | varies | unknown | needs-review |
 | [craftpix](craftpix.md) | CraftPix freebies | custom | yes* | needs-review |
 | [lospec](lospec.md) | Lospec | varies | yes* | needs-review |
 | [free-game-assets-itch](free-game-assets-itch.md) | Free Game Assets (itch) | varies | unknown | needs-review |
 
-\* Confirm per pack/page.
+\* Confirm per pack/page. LPC = share-alike on asset derivatives.

catalog/2d/lpc-revised-basics.md

@@ -0,0 +1,18 @@
+---
+id: lpc-revised-basics
+name: LPC Revised Character Basics
+url: https://opengameart.org/content/lpc-revised-character-basics
+category: 2d
+subcategories: [sprites, pixel-art]
+license: varies
+commercial: true
+attribution_required: true
+formats: [PNG]
+tags: [lpc, opengameart, copyleft-assets, r04]
+verified: 2026-07-19
+status: needs-review
+---
+
+# LPC Revised Character Basics
+
+Modernized LPC bases/run cycles on OpenGameArt. **GPL / OGA-BY** style licensing — attribution + share-alike on asset derivatives. Pair with the Universal LPC generator.

catalog/2d/lucide-icons.md

@@ -0,0 +1,18 @@
+---
+id: lucide-icons
+name: Lucide Icons
+url: https://lucide.dev/
+category: 2d
+subcategories: [icons, ui]
+license: ISC
+commercial: true
+attribution_required: false
+formats: [SVG]
+tags: [icons, brand-free, r04]
+verified: 2026-07-19
+status: active
+---
+
+# Lucide Icons
+
+1600+ consistent, brand-free UI icons under **ISC**. Safer than logo-heavy sets for generic HUD chrome. Complements Game-Icons.net (game-flavored) vs Lucide (UI chrome).

catalog/2d/phosphor-icons.md

@@ -0,0 +1,18 @@
+---
+id: phosphor-icons
+name: Phosphor Icons
+url: https://phosphoricons.com/
+category: 2d
+subcategories: [icons, ui]
+license: MIT
+commercial: true
+attribution_required: false
+formats: [SVG]
+tags: [icons, multi-weight, r04]
+verified: 2026-07-19
+status: active
+---
+
+# Phosphor Icons
+
+MIT vector icon set with multiple weights (thin→fill). Good UI companion to Lucide / Game-Icons.

catalog/2d/universal-lpc-generator.md

@@ -0,0 +1,18 @@
+---
+id: universal-lpc-generator
+name: Universal LPC Spritesheet Generator
+url: https://liberatedpixelcup.github.io/Universal-LPC-Spritesheet-Character-Generator/
+category: 2d
+subcategories: [sprites, paper-doll, tileset-adjacent]
+license: varies
+commercial: true
+attribution_required: true
+formats: [PNG]
+tags: [lpc, cc-by-sa, copyleft-assets, r04]
+verified: 2026-07-19
+status: needs-review
+---
+
+# Universal LPC Spritesheet Generator
+
+Composable Liberated Pixel Cup paper-doll sheets. Dual/triple licensed (**GPL / CC-BY-SA / OGA-BY**) — SA applies to asset derivatives; keep sheets extractable. Not CC0. See [`docs/high-risk.md`](../../docs/high-risk.md).

catalog/3d/README.md

@@ -7,6 +7,12 @@
 | [kaykit](kaykit.md) | KayKit | CC0 | yes | active |
 | [the-base-mesh](the-base-mesh.md) | The Base Mesh | CC0 | yes | active |
 | [ambientcg](ambientcg.md) | ambientCG | CC0 | yes | active |
+| [texturecan](texturecan.md) | TextureCan | CC0 | yes | active |
 | [texture-ninja](texture-ninja.md) | Texture Ninja | CC0 | yes | active |
+| [magicavoxel](magicavoxel.md) | MagicaVoxel | custom | yes | active |
 | [smithsonian-open-access](smithsonian-open-access.md) | Smithsonian Open Access | CC0 | yes | active |
+| [charge-materials](charge-materials.md) | Charge materials | CC-BY | yes | needs-review |
+| [fab-megascans-standard](fab-megascans-standard.md) | Fab/Quixel (Standard) | custom | yes* | needs-review |
 | [poly-pizza](poly-pizza.md) | Poly Pizza | varies | unknown | needs-review |
+
+\* Fab Standard vs Epic Content License — verify per asset.