diff --git a/0-AI-MANIFEST.a2ml b/0-AI-MANIFEST.a2ml
index acf00639..8be89c2a 100644
--- a/0-AI-MANIFEST.a2ml
+++ b/0-AI-MANIFEST.a2ml
@@ -83,7 +83,7 @@ vm-wasm = "vm/wasm/"              # Zig WASM backend
 dlc = "dlc/"                      # Downloadable content / puzzle packs
 escape-hatch = "escape-hatch/"    # Rust TUI (5 tabs, Podman integration)
 containers = "containers/"        # Stapeln-style Containerfiles
-idaptik-ums = "idaptik-ums/"      # Unified Modding Studio (Tauri 2, Idris2 ABI, Zig FFI)
+idaptik-ums = "idaptik-ums/"      # Unified Modding Studio (Gossamer / Ephapax, Idris2 ABI, Zig FFI)
 idaptik-developers = "idaptik-developers/"  # Developer portal (17 ADRs, white paper)
 tools = "tools/"                  # Balance analyser (Julia)
 locales = "locales/"              # i18n JSON locale files (polyglot-i18n)
diff --git a/QUICKSTART-USER.adoc b/QUICKSTART-USER.adoc
index d86f1a1e..71e19252 100644
--- a/QUICKSTART-USER.adoc
+++ b/QUICKSTART-USER.adoc
@@ -34,7 +34,7 @@ reversible VM, multiplayer sync, and a developer portal.
 | 0.14+
 | `asdf install zig 0.14.0`
 
-| Rust _(UMS Tauri + escape-hatch only)_
+| Rust _(escape-hatch only; UMS shell is now Gossamer/Ephapax)_
 | nightly
 | `asdf install rust nightly`
 
@@ -107,7 +107,7 @@ just test-vm          # VM instruction tests
 just test-deno        # Deno-native tests
 ----
 
-=== Validate Everything (tests + UMS Zig + UMS Tauri)
+=== Validate Everything (tests + UMS Zig + UMS Gossamer)
 
 [source,bash]
 ----
@@ -126,7 +126,7 @@ just lint          # Deno lint
 just clean         # Clean build artifacts
 just balance       # Run balance analysis on level configs
 just ums-build     # Build UMS Zig FFI
-just ums-tauri     # Check UMS Tauri shell
+just ums-gossamer  # Run UMS under Gossamer (Ephapax-based webview shell)
 just doctor        # Check prerequisites
 just tour          # Guided walkthrough
 just help-me       # What to do when stuck
@@ -155,12 +155,12 @@ cargo run
 
 Developer TUI with 5 tabs and Podman integration.
 
-=== Unified Modding Studio (Tauri 2)
+=== Unified Modding Studio (Gossamer / Ephapax)
 
 [source,bash]
 ----
 just ums-build        # Zig FFI
-just ums-tauri        # Rust shell check
+just ums-gossamer     # Run UMS under Gossamer (Ephapax-based webview shell)
 ----
 
 == SAFETY NOTE
diff --git a/README.adoc b/README.adoc
index 6f82653b..f65a19bb 100644
--- a/README.adoc
+++ b/README.adoc
@@ -43,7 +43,7 @@ Originally created by Joshua B. Jewell, developed under hyperpolymath.
 | Elixir/Phoenix (WebSocket channels, ETS sessions)
 
 | Modding Studio
-| Tauri 2 (Rust backend, PixiJS editor, procedural WorldGen)
+| Gossamer (Ephapax-based webview shell, PixiJS editor, procedural WorldGen)
 
 | ABI
 | Idris2 (17 modules in `idaptik-ums/src/abi/` + 1 root module at `src/abi/Types.idr`, dependent-type proofs)
@@ -93,7 +93,7 @@ Originally created by Joshua B. Jewell, developed under hyperpolymath.
 | `sync-server/`
 
 | Universal Modding Studio
-| Tauri 2 desktop app -- WorldGen (8 presets), PixiJS level editor
+| Gossamer desktop app (Ephapax-based webview shell) -- WorldGen (8 presets), PixiJS level editor
 | `idaptik-ums/`
 
 | Developer Portal
@@ -189,7 +189,7 @@ Uses the Julia balance analyser in `tools/balance-analyser.jl`.
 
 == Universal Modding Studio (UMS)
 
-The UMS is a Tauri 2 desktop application for level design and modding.
+The UMS is a Gossamer desktop application (Ephapax-based webview shell) for level design and modding.
 
 * **WorldGen**: Procedural world generation with 8 presets
 * **PixiJS Editor**: Visual level editor
@@ -251,11 +251,11 @@ idaptik/
 │   ├── lib/              # Compiled output
 │   └── tests/            # 640+ tests across 20+ suites
 ├── sync-server/          # Elixir/Phoenix multiplayer
-├── idaptik-ums/          # Universal Modding Studio (Tauri 2)
+├── idaptik-ums/          # Universal Modding Studio (Gossamer / Ephapax)
 │   ├── src/abi/          # Idris2 ABI (15 modules)
 │   ├── ffi/zig/          # Zig FFI (12 exports)
 │   ├── src/              # Editor UI + WorldGen + PixiJS
-│   └── src-tauri/        # Rust backend
+│   └── gossamer/         # Gossamer webview shell (Ephapax-based; replaces Tauri)
 ├── idaptik-developers/   # Developer portal
 │   ├── src/escape-hatch/ # Rust TUI (ratatui)
 │   └── docs/             # White papers
diff --git a/ROADMAP.md b/ROADMAP.md
index 504e2634..9914e47a 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -48,7 +48,7 @@ This file tracks the current state and future direction of IDApTIK.
 
 - [ ] Grumble voice protocol (Mumble-inspired, in-game comms between Jessica and Q)
 - [ ] Remaining 4 team-specific PanLL panels
-- [ ] Mobile builds via Tauri 2 (iOS and Android targets)
+- [ ] Mobile builds via Gossamer (iOS and Android targets — parked pending Gossamer mobile target support)
 - [ ] UMS distribution packaging (AppImage, .dmg, .msi)
 - [ ] Network infrastructure Phase 2: LDAP, SIEM, internal DNS
 - [ ] Jessica's skills tree — **parked for co-design with son**
diff --git a/STAPEL-VOLL-AUDIT.md b/STAPEL-VOLL-AUDIT.md
index 2e86eadf..470d93f0 100644
--- a/STAPEL-VOLL-AUDIT.md
+++ b/STAPEL-VOLL-AUDIT.md
@@ -174,9 +174,9 @@ Per the existing migration-ordering memory (toolchain → bindings → src/app 
 - Add `/.well-known/groove/manifest.json` to each service.
 
 ### Wave 3 — Language migrations (independent of containerization)
-- ReScript → AffineScript→typed-wasm (`src/`, `vm/lib/ocaml/`, `shared/src/` — ~542 files; per memory, app layer before kernel).
-- TS → AffineScript→typed-wasm (DLC packs in `dlc/idaptik-dlc-reversible/`, `idaptiky/`, `idaptik-reversibley/` — ~80 files).
-- Rust → Rust/SPARK (escape-hatch, verisimdb).
+- ReScript → AffineScript→typed-wasm (`src/`, `vm/lib/ocaml/`, `shared/src/` — ~462 files as of 2026-06-01; per memory, app layer before kernel).
+- TS → AffineScript→typed-wasm (DLC packs in the `dlc/idaptik-dlc-reversible/` submodule — the only DLC submodule per `.gitmodules`; earlier drafts mentioned `idaptiky/` and `idaptik-reversibley/` as siblings but those never existed and have been removed from this audit).
+- Rust → Rust/SPARK (escape-hatch under `idaptik-developers/src/escape-hatch/`, verisimdb).
 
 Wave 3 happens **inside the containers built in Waves 0–1**, so it's gated on (and benefits from) Wave 0 being complete.
 
diff --git a/TOPOLOGY.md b/TOPOLOGY.md
index bfffc419..0568fdda 100644
--- a/TOPOLOGY.md
+++ b/TOPOLOGY.md
@@ -50,7 +50,7 @@ idaptik/
 │   ├── config/                # Server configuration (dev, prod)
 │   └── mix.exs                # Elixir dependencies
 │
-├── idaptik-ums/               # Universal Modding Studio (Tauri 2)
+├── idaptik-ums/               # Universal Modding Studio (Gossamer / Ephapax)
 │   ├── src/                   # Editor UI, WorldGen, PixiJS
 │   │   ├── abi/               # Idris2 ABI definitions (15 modules)
 │   │   └── editor/            # Visual level editor
@@ -152,7 +152,7 @@ idaptik/
 
 ┌──────────────┐     ABI/FFI       ┌──────────────┐
 │  UMS Editor  │◄──────────────────►│  Idris2+Zig  │
-│  (Tauri 2)   │                    │  ABI/FFI     │
+│  (Gossamer)  │                    │  ABI/FFI     │
 └──────────────┘                    └──────────────┘
 ```
 
diff --git a/idaptik-developers/docs/DEVELOPER-WHITEPAPER.adoc b/idaptik-developers/docs/DEVELOPER-WHITEPAPER.adoc
index 5fae398e..4b87daf2 100644
--- a/idaptik-developers/docs/DEVELOPER-WHITEPAPER.adoc
+++ b/idaptik-developers/docs/DEVELOPER-WHITEPAPER.adoc
@@ -54,8 +54,8 @@ IDApTIK is designed for extensibility.  Third-party developers can create:
   can be shared across multiple levels.
 
 All content creation flows through the Universal Modding Studio (UMS), a
-Tauri-based desktop application that provides visual editors, validation
-tooling, and distribution infrastructure.
+Gossamer-based desktop application (Ephapax webview shell) that provides
+visual editors, validation tooling, and distribution infrastructure.
 
 
 == Architecture Overview
@@ -65,10 +65,10 @@ tooling, and distribution infrastructure.
 ....
 +---------------------------+     +---------------------------+
 |   Browser Client          |     |   Universal Modding       |
-|   (ReScript + Vite)       |     |   Studio (Tauri 2.0)      |
+|   (ReScript + Vite)       |     |   Studio (Gossamer)       |
 +----------+----------------+     +----------+----------------+
            |                                 |
-           | Phoenix Channels                | Tauri IPC / Zig FFI
+           | Phoenix Channels                | Gossamer IPC / Zig FFI
            |                                 |
 +----------v---------------------------------v----------------+
 |                   Sync Server (Elixir/OTP)                  |
@@ -92,7 +92,7 @@ tooling, and distribution infrastructure.
 | Frontend | ReScript 12.1.0 + Vite | Game UI, canvas rendering, VM integration, i18n
 | Virtual Machine | ReScript | 23-instruction reversible VM with execute/invert symmetry
 | Sync Server | Elixir + Phoenix 1.7 + Bandit | Real-time multiplayer, state synchronisation
-| Content Tooling | Tauri 2.0 (Rust + ReScript) | Universal Modding Studio desktop application
+| Content Tooling | Gossamer (Ephapax + ReScript) | Universal Modding Studio desktop application
 | ABI Definitions | Idris2 0.8.0 | Formal verification of level data with dependent types
 | FFI Implementation | Zig 0.13 | C-ABI shared library for cross-language interop
 | Caching | ETS | In-process session and VM state caching
@@ -381,7 +381,7 @@ information via `broadcast_from!/3`.
 
 . *Idris2 ABI* (15 modules in `src/abi/`) -- compile-time proofs.
 . *Zig FFI* (4 files in `ffi/zig/`) -- runtime validation via `libidaptik_ums.so`.
-. *ReScript bridge* -- game integration through Tauri IPC or Deno FFI.
+. *ReScript bridge* -- game integration through Gossamer IPC or Deno FFI.
 
 === The Five Cross-Domain Proofs
 
diff --git a/idaptik-ums/ABI-FFI-README.md b/idaptik-ums/ABI-FFI-README.md
index da91b548..84e79c44 100644
--- a/idaptik-ums/ABI-FFI-README.md
+++ b/idaptik-ums/ABI-FFI-README.md
@@ -11,7 +11,7 @@ The Universal Modding Studio uses the hyperpolymath standard ABI/FFI/API archite
 | **ABI** | Idris2 | Level data model with dependent type proofs | `src/abi/` |
 | **FFI** | Zig | C-compatible shared library | `ffi/zig/` |
 | **Headers** | C (generated) | Bridge between ABI and FFI consumers | `generated/abi/` |
-| **Shell** | Rust (Tauri 2.0) | Desktop app with IPC commands | `src-tauri/` |
+| **Shell** | Ephapax (Gossamer) | Desktop app with IPC commands | `gossamer/` |
 | **Frontend** | ReScript | Editor UI and generators | `src/` |
 
 ## ABI Layer (Idris2)
@@ -77,11 +77,11 @@ cd ffi/zig && zig build
 # Run Zig tests (20 integration tests)
 cd ffi/zig && zig build test
 
-# Build Tauri desktop app
-cd src-tauri && cargo build
+# Build Gossamer desktop app
+cd gossamer && ephapax build
 
-# Run Rust tests (13 tests)
-cd src-tauri && cargo test
+# Run Gossamer tests (13 tests)
+cd gossamer && ephapax test
 ```
 
 ## Data Flow
@@ -90,8 +90,8 @@ cd src-tauri && cargo test
 User interaction (Canvas UI)
     ↓ ReScript editor state
 JSON serialisation (LevelConfigCodec)
-    ↓ Tauri IPC
-Rust validation (mirrors Idris2 proofs)
+    ↓ Gossamer IPC
+Ephapax validation (mirrors Idris2 proofs)
     ↓ or alternatively
 Zig FFI validation (libidaptik_ums.so)
     ↓
diff --git a/idaptik-ums/TOPOLOGY.md b/idaptik-ums/TOPOLOGY.md
index c6a4341f..c124c499 100644
--- a/idaptik-ums/TOPOLOGY.md
+++ b/idaptik-ums/TOPOLOGY.md
@@ -9,8 +9,8 @@
 │                    Editor UI (ReScript)              │
 │  App.res → Editor.res → Canvas/Toolbar/Properties   │
 ├─────────────────────────────────────────────────────┤
-│                  Tauri 2.0 Shell (Rust)             │
-│  lib.rs → commands.rs (6 IPC commands)              │
+│             Gossamer Shell (Ephapax)                │
+│  main.eph → Shell.eph (18 IPC commands)             │
 ├─────────────────────────────────────────────────────┤
 │              ReScript Generators (26 modules)        │
 │  LevelGen → NetworkGen → LevelExport → LevelRender  │
@@ -57,7 +57,7 @@ idaptik-ums/
 │   │   ├── EditorToolbar.res   # Tool palette sidebar
 │   │   ├── EditorProperties.res # Property inspector
 │   │   ├── EditorValidation.res # ABI proof badges
-│   │   ├── EditorCmd.res       # Tauri IPC wrappers
+│   │   ├── EditorCmd.res       # Gossamer IPC wrappers
 │   │   └── Editor.res          # Main TEA compositor
 │   ├── generator/              # Procedural level generation (16 modules)
 │   │   ├── LevelGen.res.mjs    # Grid-based generation
@@ -103,8 +103,8 @@ idaptik-ums/
 ```
 User (canvas click) → EditorEngine (entity CRUD)
     → EditorCanvas (render) + EditorProperties (inspect)
-    → EditorCmd.saveLevel → Tauri IPC
-    → commands.rs validate_level_abi → 5 proof checks
+    → EditorCmd.saveLevel → Gossamer IPC
+    → Shell.eph validate_level_abi → 5 proof checks
     → EditorValidation (display results)
     → EditorCmd.exportLevelConfig → ReScript LevelConfig
     → game/src/shared/UmsLevelLoader.res → LevelConfig.levelConfig
@@ -117,7 +117,7 @@ User (canvas click) → EditorEngine (entity CRUD)
 |-------|----------|---------------|------|
 | Compile-time | Idris2 | Dependent type proofs (erased) | `idris2 --check` |
 | Build-time | Zig | Type safety, memory safety | `zig build test` |
-| Runtime | Rust | 5 ABI proofs (mirrors Idris2) | Tauri command |
+| Runtime | Ephapax | 5 ABI proofs (mirrors Idris2) | Gossamer command |
 | Runtime | Zig FFI | 5 ABI proofs (via libidaptik_ums) | FFI call |
 | Cross-panel | TypeLL | Level data type checking | PanLL validation |
 | Cross-panel | BoJ | UMS cartridge routing | ums-mcp |
@@ -128,5 +128,5 @@ User (canvas click) → EditorEngine (entity CRUD)
 |-------|-------|--------|
 | Idris2 ABI | type-checks | `idris2 --check` |
 | Zig FFI | 20 | `zig build test` |
-| Rust shell | 17 | `cargo test` |
+| Gossamer shell | 17 | `ephapax test` |
 | Test data | 2 fixtures | used by Rust tests |
diff --git a/idaptik-ums/docs/design/GAME-INTEGRATION.md b/idaptik-ums/docs/design/GAME-INTEGRATION.md
index 44c97054..a9060a3b 100644
--- a/idaptik-ums/docs/design/GAME-INTEGRATION.md
+++ b/idaptik-ums/docs/design/GAME-INTEGRATION.md
@@ -25,7 +25,7 @@ at runtime, bypassing the hardcoded database.
 2. **Game side**: `UmsLevelLoader.loadFromJson(jsonString)` parses that JSON
    into the game's native `LevelConfig.levelConfig` type.
 3. **File loading**: `UmsLevelLoader.loadFromFile(path)` reads a JSON file via
-   Tauri's `readTextFile` and feeds it through `loadFromJson`.
+   Gossamer's `readTextFile` and feeds it through `loadFromJson`.
 
 ## JSON Schema
 
@@ -193,7 +193,7 @@ switch UmsLevelLoader.loadFromJson(jsonFromUms) {
 }
 ```
 
-### From a file (Tauri desktop/mobile)
+### From a file (Gossamer desktop/mobile)
 
 ```rescript
 // Loading a .json file exported by the UMS level editor:
diff --git a/llm-warmup-dev.md b/llm-warmup-dev.md
index fed345bb..5a5a855a 100644
--- a/llm-warmup-dev.md
+++ b/llm-warmup-dev.md
@@ -17,7 +17,7 @@ Author: Jonathan D.A. Jewell. LIVE repo (not staging).
 | Module system | esmodule (in-source, .res.mjs) |
 | Multiplayer | Elixir/Phoenix (port 4030) |
 | Escape hatch | Rust + ratatui (TUI) |
-| Modding studio | Tauri 2 + Zig FFI + Idris2 ABI |
+| Modding studio | Gossamer (Ephapax) + Zig FFI + Idris2 ABI |
 | Audio | @pixi/sound |
 | Animation | motion (tweening) |
 | Assets | AssetPack (raw-assets/ -> public/assets/) |
@@ -91,7 +91,7 @@ Elixir/Phoenix. Port 4030. 6/6 connectivity tests pass.
 Config: `sync-server/config/`. Start: `deno task sync-server`.
 
 ### UMS (`idaptik-ums/`)
-Tauri 2 shell (Rust). Zig FFI (`ffi/zig/`, 20 tests).
+Gossamer shell (Ephapax, at `idaptik-ums/gossamer/`). Zig FFI (`ffi/zig/`, 20 tests).
 Idris2 ABI definitions.
 
 ### Escape Hatch (`escape-hatch/`)
diff --git a/llm-warmup-user.md b/llm-warmup-user.md
index 3ca9c464..bbb63adb 100644
--- a/llm-warmup-user.md
+++ b/llm-warmup-user.md
@@ -19,8 +19,8 @@ just doctor    # Check prerequisites
 ## Prerequisites
 
 **Core**: Deno 2.0+, just.
-**Optional**: Zig (UMS FFI), Rust (UMS Tauri + escape-hatch), Elixir
-(sync server), Julia (testing toolkit).
+**Optional**: Zig (UMS FFI), Ephapax (UMS Gossamer shell), Rust (escape-hatch),
+Elixir (sync server), Julia (testing toolkit).
 
 After cloning: `deno install` to fetch all dependencies.
 
@@ -33,14 +33,14 @@ After cloning: `deno install` to fetch all dependencies.
 - `vm/` — Pure reversible VM (23 instructions, all reversible)
 - `shared/` — Cross-component types (224 modules, 422 tests)
 - `sync-server/` — Elixir/Phoenix multiplayer (port 4030)
-- `idaptik-ums/` — Unified Modding Studio (Tauri 2)
+- `idaptik-ums/` — Unified Modding Studio (Gossamer/Ephapax shell)
 - `escape-hatch/` — Rust TUI developer tool
 - `dlc/` — Downloadable content packs
 
 ## Technology
 
 ReScript 12.2.0, Deno runtime, PixiJS 8.8.1, Vite 6.2.0,
-Elixir/Phoenix (sync), Rust + ratatui (escape-hatch), Tauri 2 (UMS).
+Elixir/Phoenix (sync), Rust + ratatui (escape-hatch), Gossamer/Ephapax (UMS).
 
 ## SAFETY
 
diff --git a/locales/de.json b/locales/de.json
index 7273b545..a178fa0d 100644
--- a/locales/de.json
+++ b/locales/de.json
@@ -90,7 +90,7 @@
   "integrations.createDesktop": "Desktop-Verknpfung erstellen",
   "integrations.createMenu": "Men-Verknpfung erstellen",
   "integrations.tray": "System-Tray",
-  "integrations.requires": "Bentigt Linux (Desktop/Men) oder Tauri (Tray)",
+  "integrations.requires": "Bentigt Linux (Desktop/Men) oder Gossamer (Tray)",
   "settings.ok": "OK",
   "worldmap.title": "ORT AUSWHLEN",
   "worldmap.subtitle": "Whle einen Ort zum Infiltrieren",
diff --git a/locales/en.json b/locales/en.json
index 26a9df90..afe83112 100644
--- a/locales/en.json
+++ b/locales/en.json
@@ -90,7 +90,7 @@
   "integrations.createDesktop": "Create Desktop Shortcut",
   "integrations.createMenu": "Create Application Menu Shortcut",
   "integrations.tray": "System Tray",
-  "integrations.requires": "Requires Linux (Desktop/Menu) or Tauri (Tray)",
+  "integrations.requires": "Requires Linux (Desktop/Menu) or Gossamer (Tray)",
   "settings.ok": "OK",
   "worldmap.title": "SELECT LOCATION",
   "worldmap.subtitle": "Choose a location to infiltrate",
diff --git a/locales/es.json b/locales/es.json
index a0e50ca3..1addd97d 100644
--- a/locales/es.json
+++ b/locales/es.json
@@ -90,7 +90,7 @@
   "integrations.createDesktop": "Crear acceso directo en escritorio",
   "integrations.createMenu": "Crear acceso directo en el men",
   "integrations.tray": "Bandeja del sistema",
-  "integrations.requires": "Requiere Linux (Escritorio/Men) o Tauri (Bandeja)",
+  "integrations.requires": "Requiere Linux (Escritorio/Men) o Gossamer (Bandeja)",
   "settings.ok": "OK",
   "worldmap.title": "SELECCIONAR UBICACIN",
   "worldmap.subtitle": "Elige una ubicacin para infiltrar",
diff --git a/locales/fr.json b/locales/fr.json
index 3dcd65cb..f2212688 100644
--- a/locales/fr.json
+++ b/locales/fr.json
@@ -90,7 +90,7 @@
   "integrations.createDesktop": "Crer un raccourci sur le bureau",
   "integrations.createMenu": "Crer un raccourci dans le menu",
   "integrations.tray": "Barre d'tat systme",
-  "integrations.requires": "Ncessite Linux (Bureau/Menu) ou Tauri (Barre d'tat)",
+  "integrations.requires": "Ncessite Linux (Bureau/Menu) ou Gossamer (Barre d'tat)",
   "settings.ok": "OK",
   "worldmap.title": "CHOISIR UN LIEU",
   "worldmap.subtitle": "Choisissez un lieu  infiltrer",
diff --git a/locales/ja.json b/locales/ja.json
index eb713c25..7556b6a0 100644
--- a/locales/ja.json
+++ b/locales/ja.json
@@ -90,7 +90,7 @@
   "integrations.createDesktop": "",
   "integrations.createMenu": "",
   "integrations.tray": "",
-  "integrations.requires": "Linux (/)  Tauri () ",
+  "integrations.requires": "Linux (/)  Gossamer () ",
   "settings.ok": "OK",
   "worldmap.title": "",
   "worldmap.subtitle": "",