feat(gui): Switch to tailwind

Refactor LLM provider system and introduce GUI for simulations

.github/workflows/deploy-docs.yml

@@ -0,0 +1,44 @@
+name: Deploy Docs
+
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - 'web/docs/**'
+      - 'pnpm-lock.yaml'
+      - '.github/workflows/deploy-docs.yml'
+  workflow_dispatch:
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    name: Deploy Docs to Cloudflare Workers
+
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v4
+
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 11
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: 'pnpm'
+
+      - name: Install Dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Build Docs
+        run: pnpm --filter docs build
+
+      - name: Deploy to Cloudflare Workers
+        uses: cloudflare/wrangler-action@v3
+        with:
+          apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+          accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
+          workingDirectory: 'web/docs'

CODE_OF_CONDUCT.md

@@ -0,0 +1,128 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+We as members, contributors, and leaders pledge to make participation in our
+community a harassment-free experience for everyone, regardless of age, body
+size, visible or invisible disability, ethnicity, sex characteristics, gender
+identity and expression, level of experience, education, socio-economic status,
+nationality, personal appearance, race, religion, or sexual identity
+and orientation.
+
+We pledge to act and interact in ways that contribute to an open, welcoming,
+diverse, inclusive, and healthy community.
+
+## Our Standards
+
+Examples of behavior that contributes to a positive environment for our
+community include:
+
+- Demonstrating empathy and kindness toward other people
+- Being respectful of differing opinions, viewpoints, and experiences
+- Giving and gracefully accepting constructive feedback
+- Accepting responsibility and apologizing to those affected by our mistakes,
+  and learning from the experience
+- Focusing on what is best not just for us as individuals, but for the
+  overall community
+
+Examples of unacceptable behavior include:
+
+- The use of sexualized language or imagery, and sexual attention or
+  advances of any kind
+- Trolling, insulting or derogatory comments, and personal or political attacks
+- Public or private harassment
+- Publishing others' private information, such as a physical or email
+  address, without their explicit permission
+- Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Enforcement Responsibilities
+
+Community leaders are responsible for clarifying and enforcing our standards of
+acceptable behavior and will take appropriate and fair corrective action in
+response to any behavior that they deem inappropriate, threatening, offensive,
+or harmful.
+
+Community leaders have the right and responsibility to remove, edit, or reject
+comments, commits, code, wiki edits, issues, and other contributions that are
+not aligned to this Code of Conduct, and will communicate reasons for moderation
+decisions when appropriate.
+
+## Scope
+
+This Code of Conduct applies within all community spaces, and also applies when
+an individual is officially representing the community in public spaces.
+Examples of representing our community include using an official e-mail address,
+posting via an official social media account, or acting as an appointed
+representative at an online or offline event.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported to the community leaders responsible for enforcement at
+mail@adityagupta.dev.
+All complaints will be reviewed and investigated promptly and fairly.
+
+All community leaders are obligated to respect the privacy and security of the
+reporter of any incident.
+
+## Enforcement Guidelines
+
+Community leaders will follow these Community Impact Guidelines in determining
+the consequences for any action they deem in violation of this Code of Conduct:
+
+### 1. Correction
+
+**Community Impact**: Use of inappropriate language or other behavior deemed
+unprofessional or unwelcome in the community.
+
+**Consequence**: A private, written warning from community leaders, providing
+clarity around the nature of the violation and an explanation of why the
+behavior was inappropriate. A public apology may be requested.
+
+### 2. Warning
+
+**Community Impact**: A violation through a single incident or series
+of actions.
+
+**Consequence**: A warning with consequences for continued behavior. No
+interaction with the people involved, including unsolicited interaction with
+those enforcing the Code of Conduct, for a specified period of time. This
+includes avoiding interactions in community spaces as well as external channels
+like social media. Violating these terms may lead to a temporary or
+permanent ban.
+
+### 3. Temporary Ban
+
+**Community Impact**: A serious violation of community standards, including
+sustained inappropriate behavior.
+
+**Consequence**: A temporary ban from any sort of interaction or public
+communication with the community for a specified period of time. No public or
+private interaction with the people involved, including unsolicited interaction
+with those enforcing the Code of Conduct, is allowed during this period.
+Violating these terms may lead to a permanent ban.
+
+### 4. Permanent Ban
+
+**Community Impact**: Demonstrating a pattern of violation of community
+standards, including sustained inappropriate behavior, harassment of an
+individual, or aggression toward or disparagement of classes of individuals.
+
+**Consequence**: A permanent ban from any sort of public interaction within
+the community.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage],
+version 2.0, available at
+https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
+
+Community Impact Guidelines were inspired by [Mozilla's code of conduct
+enforcement ladder](https://github.com/mozilla/diversity).
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see the FAQ at
+https://www.contributor-covenant.org/faq. Translations are available at
+https://www.contributor-covenant.org/translations.

CONTRIBUTING.md

@@ -0,0 +1,99 @@
+# Contributing to Omnia
+
+Thank you for your interest in contributing to Omnia! We welcome contributions from developers, technical writers, and anyone interested in agentic narrative simulation.
+
+Please take a moment to review this document before submitting contributions.
+
+## Table of Contents
+
+1. [Documentation](#documentation)
+2. [Getting Started](#getting-started)
+3. [Development Workflow](#development-workflow)
+4. [Coding Standards](#coding-standards)
+5. [Pull Request Guidelines](#pull-request-guidelines)
+
+## Documentation
+
+The primary source of truth for the Omnia project is the official documentation:
+👉 **[Omnia Documentation](https://omnia.adityagupta.dev/docs)**
+
+Please refer to the documentation to understand the project architecture, memory model, spatial systems, intents framework, and custom LLM configurations.
+
+## Getting Started
+
+Omnia is organized as a monorepo managed with **pnpm** workspaces.
+
+### Prerequisites
+
+- **Node.js** (v22.13 or newer recommended)
+- **pnpm** (v11 or newer recommended)
+
+### Local Setup
+
+1. Fork the repository and clone your fork:
+   ```bash
+   git clone https://github.com/YOUR_USERNAME/omnia-consolidated.git
+   cd omnia-consolidated
+   ```
+2. Install dependencies:
+   ```bash
+   pnpm install
+   ```
+3. Run the Web GUI interface locally:
+   ```bash
+   pnpm dev:gui
+   ```
+4. Run the Starlight documentation site locally:
+   ```bash
+   pnpm dev:docs
+   ```
+
+## Development Workflow
+
+### Branching
+
+Create a descriptive branch for your changes:
+
+```bash
+git checkout -b feature/your-feature-name
+# or
+git checkout -b fix/issue-description
+```
+
+### Running Tests
+
+Make sure all unit tests pass before submitting changes:
+
+```bash
+# Run tests once
+pnpm test
+
+# Run tests in watch mode
+pnpm test:watch
+```
+
+### Linting and Formatting
+
+We enforce consistent code quality and formatting rules across the repository.
+
+```bash
+# Check code style and formatting
+pnpm lint
+pnpm format:check
+
+# Auto-fix code style issues
+pnpm lint:fix
+pnpm format
+```
+
+## Coding Standards
+
+- **TypeScript**: Omnia is written entirely in TypeScript. Ensure all new code is strongly typed.
+- **Docstrings**: Document public-facing APIs, methods, and configurations.
+
+## Pull Request Guidelines
+
+1. **Keep PRs Focused**: Keep your changes as small and focused as possible.
+2. **Include Tests**: If you are introducing a new feature or fixing a bug, write corresponding tests in `tests/`.
+3. **Update Documentation**: If your changes alter public behavior or introduce new APIs, update the docs under `web/docs/src/content/docs/`.
+4. **Follow Commit Conventions**: Write clear, descriptive commit messages.

README.md

@@ -1,43 +1,91 @@
-![Omnia Logo](web/docs/src/assets/img/logo.png)
+<p align="center">
+<img src="web/docs/src/assets/img/logo.png" alt="Omnia Logo" />
+</p>
 
-An LLM-assisted narrative simulation engine where the <b>world state lives outside the model</b>, characters act through <b>intents that get validated</b> and applied by engine code, and each character's knowledge, memory, and emotional state are subjective and partial by construction.
+<h1 align="center">Omnia</h1>
 
-Omnia is an engine for building narrative RPG-style worlds where characters are played by a language model. It is built to survive long play sessions instead of falling apart after twenty minutes.
+<p align="center">
+<b>An architectural framework for multi agent-narrative simulations and fictional worlds!</b>
+</p>
+<p align="center">
+  <a href="https://omnia.adityagupta.dev/docs"><img src="https://img.shields.io/badge/Omnia_Docs-Read_The_Docs-red?style=for-the-badge" alt="Docs" /></a>
+  <img src="https://img.shields.io/github/license/sortedcord/omnia-consolidated?style=for-the-badge" alt="License" />
+  <img src="https://img.shields.io/github/repo-size/sortedcord/omnia-consolidated?style=for-the-badge" alt="Repo Size" />
+  <img src="https://img.shields.io/github/languages/top/sortedcord/omnia-consolidated?style=for-the-badge" alt="Top Language" />
+</p>
 
-## The Problem with the Naive Approach
+The <b>world state lives outside the model</b>, characters act through <b>intents that get validated</b> and applied by engine code. Each character's knowledge, memory, and emotional state are subjective and partial by construction.
 
-Single-agent, single-context systems (AI Dungeon and its descendants) prompt one model to _be_ the world and everyone in it. That breaks in predictable ways over long sessions:
+<p align="center">
+  <img src="./web/docs/src/assets/img/puppet.webp" />
+</p>
 
-- **State Leaks:** Characters know things they had no way of learning, because a model with full context cannot help but use it. The assassin's target greets him by name.
-- **Secrets Refuse to Stay Secret:** "Don't reveal this" is a suggestion a model can argue past, not a mechanism that says no. One clever player question and the conspiracy folds.
+Single-agent or single-context systems (AI Dungeon and its descendants) prompt one model to _be_ the world and everyone in it. That breaks in predictable ways over long sessions:
+
+- **State Leaks:** Characters know things they had no way of learning, because a model with full context cannot help but use it.
 - **Consequences Evaporate:** Betray someone, apologize, and they forgive you a turn later because nothing is tracking the betrayal as a persistent fact.
-- **Emotional Drift:** Emotional state is either frozen into a meaningless number (`trust: 40`) or handed to the model to grade itself, producing drifting, arbitrary values.
+- **Stat Drift:** Statistical attributes are either frozen into a meaningless number (`trust: 40`) or handed to the model to grade itself, producing drifting, arbitrary values.
 - **World Rot:** The world state slowly contradicts itself because the model has no structured place to keep it. The locked door is open, then locked, then never existed.
-- **Everyone Is One Person:** Every character shares one context, so every character shares one mind. They can't genuinely surprise each other, lie to each other, or know different things — they're sock puppets on the same hand.
+- **Everyone Is One Person:** Every character shares one context, so every character shares one mind. They can't genuinely surprise each other, lie to each other, or know different things. They're sock puppets on the hands of one puppetmaster.
 
-The root cause is the same in every case: the model is being asked to be the database, the physics engine, the referee, and the whole cast simultaneously — inside a context window that forgets, blends, and leaks.
+The model should not be the database, the physics engine and the whole cast simultaneously inside a sliding context window.
 
 ## The Omnia Solution
 
-Omnia answers every one of these failures with the same move: pull the thing that has to stay consistent out of the model and into structured, queryable, code-controlled state.
+Omnia answers every one of these failures with the same move: **pull the thing that has to stay consistent out of the model** and into structured, queryable, code-controlled state.
 
-- **World State:** Lives in a SQLite database, not in a context window. It cannot drift, because nothing regenerates it — it only changes through validated deltas.
+- **World State:** Lives in a DB, not a context window. It cannot drift, because nothing regenerates it. The world state only changes through validated deltas.
 - **Actions:** Actions are proposals (Intents) that engine code validates and applies; they are never direct edits the model makes to the world. The model proposes; deterministic code disposes.
-- **Epistemic Privacy:** Knowledge, memory, and emotion are modeled per character and kept partial on purpose. A character literally cannot reach for what it has not earned the right to know — the secret is not in its prompt, so there is nothing to jailbreak out of it.
+- **Epistemic Privacy:** Knowledge, memory, and emotion are modeled per character and kept partial on purpose. A character literally cannot reach for what it has not earned the right to know. The secret is not in its prompt, so there is **nothing to jailbreak out of it**.
 
-## What This Buys You
+## What this buys you
 
-The payoff is scenario complexity that uni-agent systems structurally cannot represent, no matter how good the model gets:
+<p align="center">
+  <img src="./web/docs/src/assets/img/features.webp" />
+</p>
+
+The payoff is scenario complexity that **uni-agent systems structurally cannot represent, no matter how good the model gets**.
 
 - **Real secrets, real dramatic irony.** One NPC knows the sword is cursed; the other does not. This holds for hundreds of turns not because the model is disciplined, but because the second NPC's prompts are constructed from an attribute set that simply does not contain the fact. Leaking it would require the engine to have handed it over.
-- **Genuine deception between characters.** Because each character acts from its own bounded view, characters can lie to each other — and be believed — with the truth intact in the world state. A con game, a mole in the party, an unreliable ally: these are queries over who-knows-what, not prompt acrobatics.
-- **Betrayal that stays betrayed.** Events persist as per-observer memory entries with outcomes. An apology adds a memory; it does not delete one.
+- **Genuine deception between characters.** Because each character acts from its own bounded view, characters can lie to each other and be believed; with the truth intact in the world state. A con game, a mole in the party, an unreliable ally: these are queries over "who knows what" and not prompt engineering.
+- Events persist as per observer memory entries with outcomes. An apology adds a memory; it does not delete one.
 - **Divergent accounts of the same event.** Two witnesses to the same scene hold two different buffer entries, filtered through their own aliases and vantage points. Ask them separately what happened and you get testimony, not a transcript.
-- **Identity as information.** Characters refer to each other through subjective alias maps ("the hooded figure" vs. "Bob"). Recognizing someone, being recognized, or staying anonymous are all mechanical states — a masked stranger is a masked stranger until the engine says otherwise.
 - **A physics referee that can say no.** "I pick the lock with a hairpin" is validated against world state by the Architect before anything changes. Failure is a recorded outcome the character remembers, not a narrative the model politely retconned.
 - **Time that behaves.** A world clock advances by validated, per-action deltas, and memory is recalled with psychologically natural phrasing ("earlier today, in the afternoon" — not a timestamp). Long timelines stay coherent because time is data, not vibes.
+- **No main character syndrome.** The simulation runs fully autonomously or you act on behalf of any entity — you, the player, are just an entity in the data model, not structurally elevated above the rest of the world. The world can exist without the main character.
+- **Granular model control.** Omnia is not locked to a single LLM. You pick the model — and not just globally. **Every individual step that calls the LLM can be assigned its own model**. Narration prose that demands richer reasoning gets a frontier model; quick intent decoding or other generators get a smaller, faster, cheaper one — or a model running entirely on your local machine.
 
-The general principle: **anything that must remain true is state; the model only ever supplies behavior.** That division of labor is what lets the cast, the secrets, and the timeline scale without the fiction collapsing.
+The general principle: **anything that must remain true is state; the model only ever supplies behavior.**
+
+## Installation
+
+### Prerequisites
+
+- [Node.js](https://nodejs.org/) (v20+ recommended)
+- [pnpm](https://pnpm.io/) (v9+ recommended)
+- An API key for Google Gemini (`GOOGLE_API_KEY` environment variable), or configured settings via the GUI.
+
+### Installation
+
+1. Clone the repository:
+   ```bash
+   git clone https://github.com/sortedcord/omnia-consolidated.git
+   cd omnia-consolidated
+   ```
+2. Install dependencies:
+   ```bash
+   pnpm install
+   ```
+
+### Running the Web GUI
+
+To launch the Next.js development server for the GUI dashboard:
+
+```bash
+pnpm dev:gui
+```
+
+Access the application locally at `http://localhost:3000`.
 
 ## Core Architecture
 
@@ -57,13 +105,13 @@ The prose generator is pluggable (`IActorProseGenerator`): the same turn loop ru
 
 ### Intents & The World Architect
 
-An action becomes an **Intent** — a cheap, declarative, allowed-to-be-wrong proposal. Intents route to the **World Architect**, which validates them against the objective world state (dialogue is exempt; monologue never even arrives) and generates structured deltas — starting with time advancement — that deterministic code applies after strict schema (Zod) validation. The model proposes a change; it never touches the database.
+An action becomes an **Intent** which is a simple proposal that is _allowed to be wrong_. Intents route to the **World Architect**, which validates them against the objective world state and generates structured deltas like time advancement, attribute change, etc. This deterministic code applies after strict schema (Zod) validation. The model never touches the DB.
 
-This is the load-bearing wall. Because every mutation flows through one validated chokepoint, the world cannot rot: there is no second copy of reality inside a context window to fall out of sync.
+Because every mutation flows through one validated chokepoint, the world cannot rot: there is no second copy of reality inside a context window to fall out of sync.
 
-### Attribute-Level Privacy
+### Attribute Level Privacy
 
-Every entity, item, and location is an attribute bag. Each attribute carries its own visibility (`PUBLIC` or `PRIVATE`) with an explicit access list. "The sword is cursed" is a private attribute checked in code, not a rule the model is politely asked to honor. Privacy lives at the level of the fact, not the entity — a character can be publicly a blacksmith and privately a spy, and even facts about _itself_ are hidden from it unless explicitly granted (amnesia, repression, and unwitting sleeper agents come free with the model).
+Every entity, item, and location is an _attribute bag_. Each attribute carries its own visibility (`PUBLIC` or `PRIVATE`) with an explicit access list. "The sword is cursed" is a private attribute checked in code, not a rule the model is politely asked to honor. Privacy lives at the level of the fact, not the entity. A character can be publicly a blacksmith and privately a spy, and even facts about _itself_ are hidden from it unless explicitly granted (amnesia, repression, and unwitting sleeper agents come free with the model).
 
 The dividend: **prompt-injection-proof secrets.** There is no instruction to override because the information was never serialized into the prompt. Epistemic privacy turns "the model shouldn't say this" (hard, unreliable) into "the model doesn't know this" (trivial, absolute).
 
@@ -112,7 +160,7 @@ The finish line for the first milestone is small on purpose.
 
 - [x] Two hand-authored NPCs live in one location, playable via CLI.
 - [ ] Each has buffer and vector-archive memory and recalls something said a few turns earlier. _(buffer: done; vector archive: not started)_
-- [ ] One NPC knows a fact the other does not and, provably by testing, will not leak it.
+- [x] One NPC knows a fact the other does not and, provably by testing, will not leak it.
 - [x] The Architect processes at least one non-trivial action per exchange with a visible state change.
 - [x] The whole thing persists to a SQLite file and reloads identically.
 
@@ -138,13 +186,14 @@ omnia/
     llm/         ILLMProvider interface plus Gemini and deterministic mock implementations
     scenario/    scenario JSON schema and loader (JSON → SQLite)
   apps/
-    cli/         the playable loop (human or LLM actors, --scenario / --play flags)
+    gui/         Next.js Web GUI dashboard and simulation runner
   content/
     demo/              bundled scenarios (talking-room)
   tests/
     integration/ cross-package tests against a mocked LLM
     evals/       deliberate real-API evaluation runs
-  docs/          Astro documentation site (→ web/docs/)
+  web/
+    docs/        Astro documentation site
 ```
 
 _The engine core deliberately knows nothing about domain content (stats, traits, genres). Scenarios are plain JSON the loader ingests; what an attribute means is the scenario's business, not the engine's._

apps/gui/package.json

@@ -10,14 +10,14 @@
     "lint": "next lint"
   },
   "dependencies": {
-    "@omnia/core": "workspace:*",
-    "@omnia/llm": "workspace:*",
-    "@omnia/intent": "workspace:*",
-    "@omnia/architect": "workspace:*",
     "@omnia/actor": "workspace:*",
+    "@omnia/architect": "workspace:*",
+    "@omnia/core": "workspace:*",
+    "@omnia/intent": "workspace:*",
+    "@omnia/llm": "workspace:*",
     "@omnia/memory": "workspace:*",
-    "@omnia/spatial": "workspace:*",
     "@omnia/scenario": "workspace:*",
+    "@omnia/spatial": "workspace:*",
     "dotenv": "^17.4.2",
     "next": "^16.2.10",
     "react": "^19.2.0",
@@ -27,6 +27,9 @@
     "@types/node": "^26.1.0",
     "@types/react": "^19.2.0",
     "@types/react-dom": "^19.2.0",
+    "autoprefixer": "^10.5.2",
+    "postcss": "^8.5.16",
+    "tailwindcss": "^3.4.19",
     "typescript": "^6.0.3"
   }
 }

apps/gui/postcss.config.mjs

@@ -0,0 +1,8 @@
+const config = {
+  plugins: {
+    tailwindcss: {},
+    autoprefixer: {},
+  },
+};
+
+export default config;

apps/gui/src/app/config/page.tsx

@@ -10,8 +10,9 @@ import {
   getProviderMappings,
   setProviderMapping,
   updateProviderInstance,
+  getAvailableProviders,
 } from "@/app/play/actions";
-import type { LLMProviderInstance } from "@omnia/llm";
+import type { LLMProviderInstance, LLMProviderMeta } from "@omnia/llm";
 
 interface ConfigStatus {
   apiKeySet: boolean;
@@ -24,6 +25,7 @@ export default function ConfigPage() {
   const [config, setConfig] = useState<ConfigStatus | null>(null);
   const [instances, setInstances] = useState<LLMProviderInstance[]>([]);
   const [mappings, setMappings] = useState<Record<string, string>>({});
+  const [availableProviders, setAvailableProviders] = useState<LLMProviderMeta[]>([]);
   const [loading, setLoading] = useState(true);
   const [error, setError] = useState("");
 
@@ -37,9 +39,11 @@ export default function ConfigPage() {
   useEffect(() => {
     if (selectedInstanceId === "new") {
       setEditName("");
-      setEditProvider("google-genai");
+      const defaultProvider = "google-genai";
+      setEditProvider(defaultProvider);
       setEditKey("");
-      setEditModel("gemini-2.5-flash");
+      const pMeta = availableProviders.find((p) => p.id === defaultProvider);
+      setEditModel(pMeta?.defaultModel || "gemini-2.5-flash");
       setEditIsActive(false);
     } else {
       const inst = instances.find((i) => i.id === selectedInstanceId);
@@ -47,11 +51,20 @@ export default function ConfigPage() {
         setEditName(inst.name);
         setEditProvider(inst.providerName);
         setEditKey("");
-        setEditModel(inst.modelName || "gemini-2.5-flash");
+        const pMeta = availableProviders.find((p) => p.id === inst.providerName);
+        setEditModel(inst.modelName || pMeta?.defaultModel || "gemini-2.5-flash");
         setEditIsActive(inst.isActive);
       }
     }
-  }, [selectedInstanceId, instances]);
+  }, [selectedInstanceId, instances, availableProviders]);
+
+  const handleProviderChange = (providerId: string) => {
+    setEditProvider(providerId);
+    const pMeta = availableProviders.find((p) => p.id === providerId);
+    if (pMeta) {
+      setEditModel(pMeta.defaultModel);
+    }
+  };
 
   const loadInstances = useCallback(async () => {
     try {
@@ -79,6 +92,8 @@ export default function ConfigPage() {
       setConfig(result);
       await loadInstances();
       await loadMappings();
+      const provs = await getAvailableProviders();
+      setAvailableProviders(provs);
     } catch (err) {
       setError(err instanceof Error ? err.message : String(err));
     } finally {
@@ -159,44 +174,57 @@ export default function ConfigPage() {
   };
 
   return (
-    <div className="config-page">
-      <h1>Configuration</h1>
+    <div className="mx-auto max-w-[800px] px-4 py-8">
+      <h1 className="mb-6 text-2xl">Configuration</h1>
 
       {loading && <p>Loading configuration...</p>}
-      {error && <div className="error-banner">{error}</div>}
+      {error && (
+        <div className="mb-4 rounded border border-red-300 bg-red-50 px-3 py-2 text-sm text-red-700">
+          {error}
+        </div>
+      )}
 
       {config && !loading && (
         <>
-          <section className="config-section">
-            <h2>LLM Provider Instances</h2>
-            <div className="provider-split-container">
-              
+          <section className="mb-8 border-b border-gray-200 pb-6">
+            <h2 className="mb-3 text-lg">LLM Provider Instances</h2>
+            <div className="mt-4 grid min-h-[400px] grid-cols-1 overflow-hidden rounded-xl border border-gray-200 bg-white md:grid-cols-[30%_70%]">
               {/* 30% area */}
-              <div className="provider-list-pane">
-                <div className="pane-header">
-                  <h3>Instances</h3>
+              <div className="flex flex-col border-r border-gray-200 bg-gray-50">
+                <div className="flex items-center justify-between border-b border-gray-200 bg-gray-100 px-4 py-4">
+                  <h3 className="m-0 text-[0.95rem] font-semibold text-[#111]">Instances</h3>
                   <button
                     onClick={() => setSelectedInstanceId("new")}
-                    className="btn-add-inst"
+                    className="cursor-pointer rounded-md bg-emerald-500 px-3 py-1.5 text-xs font-medium text-white transition-colors hover:bg-emerald-600"
                     type="button"
                   >
                     + Add
                   </button>
                 </div>
-                <div className="pane-list">
+                <div className="flex flex-1 flex-col overflow-y-auto">
                   {instances.length === 0 ? (
-                    <div className="no-instances-msg">No instances configured</div>
+                    <div className="px-4 py-8 text-center text-xs text-gray-400">
+                      No instances configured
+                    </div>
                   ) : (
                     instances.map((inst) => (
                       <div
                         key={inst.id}
                         onClick={() => setSelectedInstanceId(inst.id)}
-                        className={`instance-list-item ${selectedInstanceId === inst.id ? "active" : ""}`}
+                        className={`cursor-pointer border-b border-gray-200 border-l-[3px] px-4 py-4 transition-all hover:bg-gray-100 ${
+                          selectedInstanceId === inst.id
+                            ? "border-l-blue-500 bg-blue-50"
+                            : "border-l-transparent"
+                        }`}
                       >
-                        <div className="item-name">{inst.name}</div>
-                        <div className="item-meta">
+                        <div className="text-sm font-medium text-[#111]">{inst.name}</div>
+                        <div className="mt-1 flex items-center justify-between text-xs text-gray-500">
                           <span>{inst.providerName}</span>
-                          {inst.isActive && <span className="active-pill">Active</span>}
+                          {inst.isActive && (
+                            <span className="rounded-full bg-green-100 px-1.5 py-[1px] text-[0.65rem] font-semibold text-green-700">
+                              Active
+                            </span>
+                          )}
                         </div>
                       </div>
                     ))
@@ -205,17 +233,19 @@ export default function ConfigPage() {
               </div>
 
               {/* 70% area */}
-              <div className="provider-form-pane">
-                <form onSubmit={handleSave} className="provider-config-form">
-                  <div className="form-scroll-content">
-                    <h3>
+              <div className="flex flex-col bg-white">
+                <form onSubmit={handleSave} className="flex h-full flex-col justify-between">
+                  <div className="flex flex-1 flex-col gap-5 p-6">
+                    <h3 className="m-0 mb-2 text-lg font-semibold text-[#111]">
                       {selectedInstanceId === "new"
                         ? "Create New Provider Instance"
                         : `Configure: ${editName}`}
                     </h3>
 
-                    <div className="form-group">
-                      <label htmlFor="formName">Friendly Name</label>
+                    <div className="flex flex-col gap-1.5">
+                      <label htmlFor="formName" className="text-xs font-medium text-gray-700">
+                        Friendly Name
+                      </label>
                       <input
                         id="formName"
                         type="text"
@@ -223,23 +253,37 @@ export default function ConfigPage() {
                         onChange={(e) => setEditName(e.target.value)}
                         placeholder="e.g. Gemini - Production"
                         required
+                        className="w-full rounded-md border border-gray-300 bg-white px-3 py-2 text-sm outline-none transition-[border-color,box-shadow] focus:border-blue-500 focus:ring-3 focus:ring-blue-500/15"
                       />
                     </div>
 
-                    <div className="form-group">
-                      <label htmlFor="formProvider">Provider Type</label>
+                    <div className="flex flex-col gap-1.5">
+                      <label htmlFor="formProvider" className="text-xs font-medium text-gray-700">
+                        Provider Type
+                      </label>
                       <select
                         id="formProvider"
                         value={editProvider}
-                        onChange={(e) => setEditProvider(e.target.value)}
+                        onChange={(e) => handleProviderChange(e.target.value)}
+                        className="w-full rounded-md border border-gray-300 bg-white px-3 py-2 text-sm outline-none transition-[border-color,box-shadow] focus:border-blue-500 focus:ring-3 focus:ring-blue-500/15"
                       >
-                        <option value="google-genai">Google Gemini (Gemini-2.5-flash)</option>
-                        <option value="mock">Mock LLM Provider</option>
+                        {availableProviders.map((p) => (
+                          <option key={p.id} value={p.id}>
+                            {p.displayName}
+                          </option>
+                        ))}
                       </select>
+                      {editProvider && availableProviders.length > 0 && (
+                        <span className="mt-1 block rounded border border-gray-200 bg-gray-100 px-3 py-2 text-xs text-gray-600">
+                          {availableProviders.find((p) => p.id === editProvider)?.description}
+                        </span>
+                      )}
                     </div>
 
-                    <div className="form-group">
-                      <label htmlFor="formKey">API Key</label>
+                    <div className="flex flex-col gap-1.5">
+                      <label htmlFor="formKey" className="text-xs font-medium text-gray-700">
+                        API Key
+                      </label>
                       <input
                         id="formKey"
                         type="password"
@@ -251,76 +295,92 @@ export default function ConfigPage() {
                             : "•••••••• (unchanged)"
                         }
                         required={selectedInstanceId === "new"}
+                        className="w-full rounded-md border border-gray-300 bg-white px-3 py-2 text-sm outline-none transition-[border-color,box-shadow] focus:border-blue-500 focus:ring-3 focus:ring-blue-500/15"
                       />
                     </div>
 
-                    <div className="form-group">
-                      <label htmlFor="formModel">Model Name</label>
+                    <div className="flex flex-col gap-1.5">
+                      <label htmlFor="formModel" className="text-xs font-medium text-gray-700">
+                        Model Name
+                      </label>
                       <input
                         id="formModel"
                         type="text"
                         value={editModel}
                         onChange={(e) => setEditModel(e.target.value)}
                         placeholder="e.g. gemini-2.5-flash, gemini-2.5-pro"
+                        className="w-full rounded-md border border-gray-300 bg-white px-3 py-2 text-sm outline-none transition-[border-color,box-shadow] focus:border-blue-500 focus:ring-3 focus:ring-blue-500/15"
                       />
                     </div>
 
-                    <div className="form-group checkbox-group">
+                    <div className="mt-1 flex flex-row items-center gap-2">
                       <input
                         id="formActive"
                         type="checkbox"
                         checked={editIsActive}
                         onChange={(e) => setEditIsActive(e.target.checked)}
+                        className="h-4 w-4 cursor-pointer"
                       />
-                      <label htmlFor="formActive">Set as Active Instance</label>
+                      <label htmlFor="formActive" className="cursor-pointer text-xs font-medium text-gray-700">
+                        Set as Active Instance
+                      </label>
                     </div>
                   </div>
 
-                  <div className="form-actions-bar">
-                    <div className="action-left">
+                  <div className="flex items-center justify-between border-t border-gray-200 bg-gray-50 px-6 py-4">
+                    <div>
                       {selectedInstanceId !== "new" && (
                         <button
                           type="button"
                           onClick={handleDelete}
                           disabled={loading}
-                          className="btn-delete-pane"
+                          className="cursor-pointer rounded-md bg-red-500 px-4 py-2 text-sm font-medium text-white transition-colors hover:bg-red-600 disabled:opacity-50"
                         >
                           Delete
                         </button>
                       )}
                     </div>
-                    <div className="action-right">
-                      <button type="submit" disabled={loading} className="btn-save-pane">
+                    <div>
+                      <button
+                        type="submit"
+                        disabled={loading}
+                        className="cursor-pointer rounded-md bg-blue-600 px-5 py-2 text-sm font-medium text-white transition-colors hover:bg-blue-700 disabled:opacity-50"
+                      >
                         {loading ? "Saving..." : "Save"}
                       </button>
                     </div>
                   </div>
                 </form>
               </div>
-
             </div>
           </section>
 
-          <section className="config-section">
-            <h2>Task Provider Routing</h2>
-            <p className="config-hint" style={{ background: "#eff6ff", border: "1px solid #bfdbfe", color: "#1e3a8a", margin: "1rem 0" }}>
-              Configure which LLM Provider Key Instance should handle each specific simulation task. Mappings default to the currently <strong>Active</strong> instance if not specified.
+          <section className="mb-8 border-b border-gray-200 pb-6">
+            <h2 className="mb-3 text-lg">Task Provider Routing</h2>
+            <p className="my-4 rounded border border-blue-200 bg-blue-50 px-3 py-2 text-xs text-blue-800">
+              Configure which LLM Provider Key Instance should handle each specific simulation
+              task. Mappings default to the currently <strong>Active</strong> instance if not
+              specified.
             </p>
-            <div className="mappings-grid">
+            <div className="mt-4 grid grid-cols-1 gap-4 md:grid-cols-2">
               {[
                 { key: "actor-prose", label: "Actor Prose Generation", desc: "Generates roleplay/narrative prose for Non-Player Characters." },
                 { key: "llm-validator", label: "LLM Validator", desc: "Arbitrates and validates proposed actions against the world state rules." },
                 { key: "intent-decoder", label: "Intent Decoder", desc: "Splits raw prose actions into structured intents (Player and NPC)." },
                 { key: "timedelta", label: "TimeDelta Generator", desc: "Calculates the duration of character actions to advance the game clock." },
               ].map((task) => (
-                <div key={task.key} className="mapping-card">
-                  <div className="mapping-info">
-                    <strong>{task.label}</strong>
-                    <span className="text-gray" style={{ fontSize: "0.75rem", marginTop: "0.125rem" }}>{task.desc}</span>
+                <div
+                  key={task.key}
+                  className="flex flex-col justify-between gap-3 rounded-lg border border-gray-200 bg-gray-50 p-4"
+                >
+                  <div className="flex flex-col gap-1 text-xs">
+                    <strong className="text-sm text-[#111]">{task.label}</strong>
+                    <span className="mt-0.5 text-gray-500">{task.desc}</span>
                   </div>
                   <select
                     value={mappings[task.key] || ""}
                     onChange={(e) => handleUpdateMapping(task.key, e.target.value)}
+                    className="w-full rounded border border-gray-300 bg-white px-2 py-1.5 text-xs"
                   >
                     <option value="">-- Use Active Key (Default) --</option>
                     {instances.map((inst) => (
@@ -334,21 +394,21 @@ export default function ConfigPage() {
             </div>
           </section>
 
-          <section className="config-section">
-            <h2>Environment Variables Default</h2>
-            <div className="config-row">
-              <span className="config-label">Default Model</span>
-              <span className="config-value">
-                <code>{config.model}</code>
+          <section className="mb-8 border-b border-gray-200 pb-6">
+            <h2 className="mb-3 text-lg">Environment Variables Default</h2>
+            <div className="flex justify-between border-b border-gray-100 py-1.5">
+              <span className="text-sm text-gray-500">Default Model</span>
+              <span className="text-sm">
+                <code className="font-mono text-sm">{config.model}</code>
               </span>
             </div>
-            <div className="config-row">
-              <span className="config-label">Default API Key (.env)</span>
+            <div className="flex justify-between border-b border-gray-100 py-1.5">
+              <span className="text-sm text-gray-500">Default API Key (.env)</span>
               <span
                 className={
                   config.apiKeySet
-                    ? "config-value status-ok"
-                    : "config-value status-error"
+                    ? "text-sm text-green-600"
+                    : "text-sm font-medium text-red-600"
                 }
               >
                 {config.apiKeySet
@@ -358,26 +418,30 @@ export default function ConfigPage() {
             </div>
           </section>
 
-          <section className="config-section">
-            <h2>Available Scenarios</h2>
+          <section className="mb-8 border-b border-gray-200 pb-6">
+            <h2 className="mb-3 text-lg">Available Scenarios</h2>
             {config.availableScenarios.length === 0 ? (
-              <p className="config-hint">
-                No scenarios found in <code>content/demo/scenarios/</code>.
+              <p className="mt-3 rounded border border-amber-200 bg-amber-100 px-3 py-2 text-xs text-amber-800">
+                No scenarios found in <code className="font-mono text-xs">content/demo/scenarios/</code>.
               </p>
             ) : (
-              <table className="scenario-table">
+              <table className="w-full border-collapse text-sm">
                 <thead>
                   <tr>
-                    <th>Name</th>
-                    <th>Path</th>
+                    <th className="border-b-2 border-gray-200 p-2 text-left font-medium text-gray-500">
+                      Name
+                    </th>
+                    <th className="border-b-2 border-gray-200 p-2 text-left font-medium text-gray-500">
+                      Path
+                    </th>
                   </tr>
                 </thead>
                 <tbody>
                   {config.availableScenarios.map((s) => (
                     <tr key={s.path}>
-                      <td>{s.name}</td>
-                      <td>
-                        <code>{s.path}</code>
+                      <td className="border-b border-gray-100 p-2">{s.name}</td>
+                      <td className="border-b border-gray-100 p-2">
+                        <code className="font-mono text-xs text-blue-600">{s.path}</code>
                       </td>
                     </tr>
                   ))}
@@ -386,392 +450,18 @@ export default function ConfigPage() {
             )}
           </section>
 
-          <section className="config-section">
-            <h2>Engine Packages</h2>
-            <p className="config-hint">
-              All <code>@omnia/*</code> workspace packages are consumed via{" "}
-              <code>transpilePackages</code> in <code>next.config.ts</code>.
-              The native <code>better-sqlite3</code> module is externalized via{" "}
-              <code>serverExternalPackages</code>.
+          <section className="mb-8 border-b border-gray-200 pb-6">
+            <h2 className="mb-3 text-lg">Engine Packages</h2>
+            <p className="mt-3 rounded border border-amber-200 bg-amber-100 px-3 py-2 text-xs text-amber-800">
+              All <code className="font-mono text-xs">@omnia/*</code> workspace packages are
+              consumed via <code className="font-mono text-xs">transpilePackages</code> in{" "}
+              <code className="font-mono text-xs">next.config.ts</code>. The native{" "}
+              <code className="font-mono text-xs">better-sqlite3</code> module is externalized
+              via <code className="font-mono text-xs">serverExternalPackages</code>.
             </p>
           </section>
         </>
       )}
-
-      <style>{`
-        .config-page {
-          max-width: 800px;
-          margin: 0 auto;
-          padding: 2rem 1rem;
-        }
-        .config-page h1 {
-          font-size: 1.5rem;
-          margin-bottom: 1.5rem;
-        }
-        .config-section {
-          margin-bottom: 2rem;
-          padding-bottom: 1.5rem;
-          border-bottom: 1px solid #e5e7eb;
-        }
-        .config-section h2 {
-          font-size: 1.125rem;
-          margin-bottom: 0.75rem;
-        }
-        .config-row {
-          display: flex;
-          justify-content: space-between;
-          padding: 0.375rem 0;
-          border-bottom: 1px solid #f3f4f6;
-        }
-        .config-label {
-          color: #555;
-          font-size: 0.875rem;
-        }
-        .config-value {
-          font-size: 0.875rem;
-        }
-        .status-ok {
-          color: #16a34a;
-        }
-        .status-error {
-          color: #dc2626;
-          font-weight: 500;
-        }
-        .config-hint {
-          margin-top: 0.75rem;
-          padding: 0.5rem 0.75rem;
-          background: #fef3c7;
-          border: 1px solid #fde68a;
-          border-radius: 4px;
-          font-size: 0.8125rem;
-          color: #92400e;
-        }
-        .config-hint code {
-          background: rgba(0,0,0,0.06);
-          padding: 0.125rem 0.25rem;
-          border-radius: 2px;
-          font-size: 0.75rem;
-        }
-        .error-banner {
-          background: #fef2f2;
-          color: #b91c1c;
-          border: 1px solid #fca5a5;
-          border-radius: 4px;
-          padding: 0.5rem 0.75rem;
-          font-size: 0.875rem;
-          margin-bottom: 1rem;
-        }
-        .scenario-table {
-          width: 100%;
-          border-collapse: collapse;
-          font-size: 0.875rem;
-        }
-        .scenario-table th {
-          text-align: left;
-          padding: 0.5rem;
-          border-bottom: 2px solid #e5e7eb;
-          color: #555;
-          font-weight: 500;
-        }
-        .scenario-table td {
-          padding: 0.5rem;
-          border-bottom: 1px solid #f3f4f6;
-        }
-        .scenario-table code {
-          font-size: 0.8125rem;
-          color: #2563eb;
-        }
-        code {
-          font-family: monospace;
-          font-size: 0.875rem;
-        }
-
-        /* Pill and List Styles */
-        .status-pill {
-          display: inline-block;
-          padding: 0.125rem 0.5rem;
-          border-radius: 9999px;
-          font-size: 0.75rem;
-          font-weight: 600;
-        }
-        .status-pill.active {
-          background: #dcfce7;
-          color: #15803d;
-        }
-        .status-pill.inactive {
-          background: #f3f4f6;
-          color: #4b5563;
-        }
-        .action-buttons {
-          display: flex;
-          gap: 0.5rem;
-          align-items: center;
-        }
-        .btn-sm {
-          padding: 0.25rem 0.5rem;
-          font-size: 0.75rem;
-          background: #3b82f6;
-          color: #fff;
-          border: none;
-          border-radius: 4px;
-          cursor: pointer;
-        }
-        .btn-sm:hover {
-          background: #2563eb;
-        }
-        .btn-sm.delete-btn {
-          background: #ef4444;
-        }
-        .btn-sm.delete-btn:hover {
-          background: #dc2626;
-        }
-        /* Split container */
-        .provider-split-container {
-          display: grid;
-          grid-template-columns: 1fr;
-          border: 1px solid #e5e7eb;
-          border-radius: 12px;
-          overflow: hidden;
-          background: #fff;
-          margin-top: 1rem;
-          min-height: 400px;
-        }
-        @media (min-width: 768px) {
-          .provider-split-container {
-            grid-template-columns: 30% 70%;
-          }
-        }
-
-        /* 30% List Pane */
-        .provider-list-pane {
-          border-right: 1px solid #e5e7eb;
-          background: #f9fafb;
-          display: flex;
-          flex-direction: column;
-        }
-        .pane-header {
-          display: flex;
-          justify-content: space-between;
-          align-items: center;
-          padding: 1rem;
-          border-bottom: 1px solid #e5e7eb;
-          background: #f3f4f6;
-        }
-        .pane-header h3 {
-          margin: 0;
-          font-size: 0.95rem;
-          font-weight: 600;
-          color: #111;
-        }
-        .btn-add-inst {
-          padding: 0.375rem 0.75rem;
-          font-size: 0.8125rem;
-          font-weight: 500;
-          background: #10b981;
-          color: #fff;
-          border: none;
-          border-radius: 6px;
-          cursor: pointer;
-          transition: background 0.2s;
-        }
-        .btn-add-inst:hover {
-          background: #059669;
-        }
-        .pane-list {
-          overflow-y: auto;
-          flex: 1;
-          display: flex;
-          flex-direction: column;
-        }
-        .no-instances-msg {
-          padding: 2rem 1rem;
-          text-align: center;
-          color: #6b7280;
-          font-size: 0.8125rem;
-        }
-        .instance-list-item {
-          padding: 1rem;
-          border-bottom: 1px solid #e5e7eb;
-          cursor: pointer;
-          transition: background 0.15s, border-left 0.15s;
-          border-left: 3px solid transparent;
-        }
-        .instance-list-item:hover {
-          background: #f3f4f6;
-        }
-        .instance-list-item.active {
-          background: #eff6ff;
-          border-left: 3px solid #3b82f6;
-        }
-        .item-name {
-          font-weight: 500;
-          font-size: 0.875rem;
-          color: #111;
-        }
-        .item-meta {
-          display: flex;
-          justify-content: space-between;
-          align-items: center;
-          margin-top: 0.25rem;
-          font-size: 0.75rem;
-          color: #6b7280;
-        }
-        .active-pill {
-          background: #dcfce7;
-          color: #15803d;
-          font-weight: 600;
-          padding: 0.0625rem 0.375rem;
-          border-radius: 9999px;
-        }
-
-        /* 70% Form Pane */
-        .provider-form-pane {
-          background: #fff;
-          display: flex;
-          flex-direction: column;
-        }
-        .provider-config-form {
-          display: flex;
-          flex-direction: column;
-          height: 100%;
-          justify-content: space-between;
-        }
-        .form-scroll-content {
-          padding: 1.5rem;
-          flex: 1;
-          display: flex;
-          flex-direction: column;
-          gap: 1.25rem;
-        }
-        .form-scroll-content h3 {
-          margin: 0 0 0.5rem 0;
-          font-size: 1.125rem;
-          font-weight: 600;
-          color: #111;
-        }
-        .form-group {
-          display: flex;
-          flex-direction: column;
-          gap: 0.375rem;
-        }
-        .form-group label {
-          font-size: 0.8125rem;
-          font-weight: 500;
-          color: #374151;
-        }
-        .form-group input[type="text"],
-        .form-group input[type="password"],
-        .form-group select {
-          padding: 0.5rem 0.75rem;
-          font-size: 0.875rem;
-          border: 1px solid #d1d5db;
-          border-radius: 6px;
-          background: #fff;
-          outline: none;
-          transition: border-color 0.15s, box-shadow 0.15s;
-        }
-        .form-group input:focus,
-        .form-group select:focus {
-          border-color: #3b82f6;
-          box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
-        }
-        .checkbox-group {
-          flex-direction: row;
-          align-items: center;
-          gap: 0.5rem;
-          margin-top: 0.25rem;
-        }
-        .checkbox-group label {
-          cursor: pointer;
-        }
-        .checkbox-group input {
-          width: 1rem;
-          height: 1rem;
-          cursor: pointer;
-        }
-
-        /* Action bar */
-        .form-actions-bar {
-          padding: 1rem 1.5rem;
-          border-top: 1px solid #e5e7eb;
-          background: #f9fafb;
-          display: flex;
-          justify-content: space-between;
-          align-items: center;
-        }
-        .btn-delete-pane {
-          padding: 0.5rem 1rem;
-          font-size: 0.875rem;
-          font-weight: 500;
-          background: #ef4444;
-          color: #fff;
-          border: none;
-          border-radius: 6px;
-          cursor: pointer;
-          transition: background 0.2s;
-        }
-        .btn-delete-pane:hover {
-          background: #dc2626;
-        }
-        .btn-save-pane {
-          padding: 0.5rem 1.25rem;
-          font-size: 0.875rem;
-          font-weight: 500;
-          background: #2563eb;
-          color: #fff;
-          border: none;
-          border-radius: 6px;
-          cursor: pointer;
-          transition: background 0.2s;
-        }
-        .btn-save-pane:hover {
-          background: #1d4ed8;
-        }
-
-        /* Task Provider Routing Styles */
-        .mappings-grid {
-          display: grid;
-          grid-template-columns: 1fr;
-          gap: 1rem;
-          margin-top: 1rem;
-        }
-        @media (min-width: 768px) {
-          .mappings-grid {
-            grid-template-columns: 1fr 1fr;
-          }
-        }
-        .mapping-card {
-          border: 1px solid #e5e7eb;
-          background: #f9fafb;
-          border-radius: 8px;
-          padding: 1rem;
-          display: flex;
-          flex-direction: column;
-          justify-content: space-between;
-          gap: 0.75rem;
-        }
-        .mapping-info {
-          display: flex;
-          flex-direction: column;
-          gap: 0.25rem;
-          font-size: 0.8125rem;
-        }
-        .mapping-info strong {
-          font-size: 0.875rem;
-          color: #111;
-        }
-        .mapping-card select {
-          padding: 0.375rem 0.5rem;
-          font-size: 0.8125rem;
-          border: 1px solid #ccc;
-          border-radius: 4px;
-          background: #fff;
-          width: 100%;
-        }
-        .text-gray {
-          color: #6b7280;
-        }
-      `}</style>
     </div>
   );
 }

apps/gui/src/app/globals.css

@@ -1,18 +1,10 @@
-*,
-*::before,
-*::after {
-  box-sizing: border-box;
-  margin: 0;
-  padding: 0;
-}
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
 
-html {
-  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
-    Oxygen, Ubuntu, Cantarell, sans-serif;
-  color: #111;
-  background: #fafafa;
-}
-
-body {
-  min-height: 100dvh;
+@layer base {
+  html {
+    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
+      Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
+  }
 }

apps/gui/src/app/layout.tsx

@@ -10,7 +10,7 @@ export const metadata = {
 export default function RootLayout({ children }: { children: ReactNode }) {
   return (
     <html lang="en">
-      <body>
+      <body className="min-h-dvh bg-[#fafafa] text-[#111]">
         <NavBar />
         {children}
       </body>

apps/gui/src/app/page.tsx

@@ -2,62 +2,31 @@ import Link from "next/link";
 
 export default function Home() {
   return (
-    <main className="home">
-      <h1>Omnia GUI</h1>
-      <p className="subtitle">
+    <main className="mx-auto max-w-[800px] px-4 py-12">
+      <h1 className="mb-2 text-3xl">Omnia GUI</h1>
+      <p className="mb-8 text-gray-500">
         Configuration and gameplay interface for the Omnia simulation engine.
       </p>
-      <div className="home-links">
-        <Link href="/play" className="home-card">
-          <h2>Play</h2>
-          <p>Start a simulation and interact with NPCs</p>
+      <div className="flex gap-4">
+        <Link
+          href="/play"
+          className="block flex-1 rounded-lg border border-gray-200 p-6 text-inherit no-underline transition-[border-color,box-shadow] duration-150 hover:border-blue-600 hover:shadow-[0_2px_8px_rgba(37,99,235,0.1)]"
+        >
+          <h2 className="mb-1 text-xl">Play</h2>
+          <p className="text-sm text-gray-500">
+            Start a simulation and interact with NPCs
+          </p>
         </Link>
-        <Link href="/config" className="home-card">
-          <h2>Config</h2>
-          <p>Check environment, API keys, and available scenarios</p>
+        <Link
+          href="/config"
+          className="block flex-1 rounded-lg border border-gray-200 p-6 text-inherit no-underline transition-[border-color,box-shadow] duration-150 hover:border-blue-600 hover:shadow-[0_2px_8px_rgba(37,99,235,0.1)]"
+        >
+          <h2 className="mb-1 text-xl">Config</h2>
+          <p className="text-sm text-gray-500">
+            Check environment, API keys, and available scenarios
+          </p>
         </Link>
       </div>
-      <style>{`
-        .home {
-          max-width: 800px;
-          margin: 0 auto;
-          padding: 3rem 1rem;
-        }
-        .home h1 {
-          font-size: 2rem;
-          margin-bottom: 0.5rem;
-        }
-        .subtitle {
-          color: #555;
-          margin-bottom: 2rem;
-        }
-        .home-links {
-          display: flex;
-          gap: 1rem;
-        }
-        .home-card {
-          flex: 1;
-          display: block;
-          padding: 1.5rem;
-          border: 1px solid #e5e7eb;
-          border-radius: 8px;
-          text-decoration: none;
-          color: inherit;
-          transition: border-color 0.15s, box-shadow 0.15s;
-        }
-        .home-card:hover {
-          border-color: #2563eb;
-          box-shadow: 0 2px 8px rgba(37, 99, 235, 0.1);
-        }
-        .home-card h2 {
-          font-size: 1.25rem;
-          margin-bottom: 0.25rem;
-        }
-        .home-card p {
-          font-size: 0.875rem;
-          color: #555;
-        }
-      `}</style>
     </main>
   );
 }

apps/gui/src/app/play/actions.ts

@@ -4,7 +4,7 @@ import path from "path";
 import fs from "fs";
 import { simulationManager } from "@/lib/simulation";
 import type { SimSnapshot } from "@/lib/simulation";
-import { ProviderManager, LLMProviderInstance } from "@omnia/llm";
+import { ProviderManager, LLMProviderInstance, AVAILABLE_PROVIDERS, LLMProviderMeta } from "@omnia/llm";
 
 function resolveScenarioPath(relative: string): string {
   const cwd = process.cwd();
@@ -274,3 +274,7 @@ export async function setProviderMapping(
 ): Promise<void> {
   ProviderManager.setMapping(task, providerInstanceId);
 }
+
+export async function getAvailableProviders(): Promise<LLMProviderMeta[]> {
+  return AVAILABLE_PROVIDERS;
+}

apps/gui/src/lib/simulation.ts

@@ -25,7 +25,7 @@ import {
   IActorProseGenerator,
   buildBufferEntryForIntent,
 } from "@omnia/actor";
-import { GeminiProvider, ILLMProvider, MockLLMProvider, ProviderManager } from "@omnia/llm";
+import { GeminiProvider, ILLMProvider, MockLLMProvider, ProviderManager, OpenRouterProvider } from "@omnia/llm";
 import { ScenarioLoader } from "@omnia/scenario";
 
 import type {
@@ -231,9 +231,12 @@ class SimulationManager {
 
       const key = inst ? inst.apiKey : (process.env.GOOGLE_API_KEY || "");
       const providerName = inst ? inst.providerName : "google-genai";
+      const modelName = inst ? inst.modelName : undefined;
 
       if (providerName === "google-genai") {
-        return new GeminiProvider(key);
+        return new GeminiProvider(key, modelName);
+      } else if (providerName === "openrouter") {
+        return new OpenRouterProvider(key, modelName);
       } else {
         return new MockLLMProvider([]);
       }
@@ -668,7 +671,9 @@ class SimulationManager {
         }
 
         if (inst.providerName === "google-genai") {
-          return new GeminiProvider(inst.apiKey);
+          return new GeminiProvider(inst.apiKey, inst.modelName);
+        } else if (inst.providerName === "openrouter") {
+          return new OpenRouterProvider(inst.apiKey, inst.modelName);
         } else {
           return new MockLLMProvider([]);
         }

apps/gui/tailwind.config.ts

@@ -0,0 +1,11 @@
+import type { Config } from "tailwindcss";
+
+const config: Config = {
+  content: ["./src/**/*.{js,ts,jsx,tsx,mdx}"],
+  theme: {
+    extend: {},
+  },
+  plugins: [],
+};
+
+export default config;

package.json

@@ -8,7 +8,6 @@
     "build:web": "pnpm --filter landing build",
     "build:docs": "pnpm --filter docs build",
     "build:gui": "pnpm --filter @omnia/gui build",
-    "build:all": "pnpm build && pnpm build:web && pnpm build:docs && pnpm build:gui",
     "dev:web": "pnpm --filter landing dev",
     "dev:docs": "pnpm --filter docs dev",
     "dev:gui": "pnpm --filter @omnia/gui dev",
@@ -23,8 +22,8 @@
     "test:evals": "vitest run --project evals"
   },
   "keywords": [],
-  "author": "",
-  "license": "ISC",
+  "author": "sortedcord",
+  "license": "MIT",
   "devEngines": {
     "packageManager": {
       "name": "pnpm",
@@ -48,6 +47,7 @@
   },
   "dependencies": {
     "@langchain/google-genai": "^2.2.0",
+    "@langchain/openrouter": "^0.4.3",
     "@types/node": "^20.19.43",
     "dotenv": "^17.4.2"
   }

packages/llm/src/config.ts

@@ -2,6 +2,7 @@ import { z } from "zod";
 
 const LLMConfigSchema = z.object({
   GOOGLE_API_KEY: z.string().optional(),
+  OPENROUTER_API_KEY: z.string().optional(),
 });
 
 export const llmConfig = LLMConfigSchema.parse(process.env);

packages/llm/src/index.ts

@@ -2,4 +2,5 @@ export * from "./llm.js";
 export * from "./config.js";
 export * from "./providers/google-genai.js";
 export * from "./providers/mock.js";
+export * from "./providers/openrouter.js";
 export * from "./provider-manager.js";

packages/llm/src/llm.ts

@@ -45,3 +45,31 @@ export interface LLMProviderInstance {
   isActive: boolean;
   modelName?: string;
 }
+
+export interface LLMProviderMeta {
+  id: string;
+  displayName: string;
+  description: string;
+  defaultModel: string;
+}
+
+export const AVAILABLE_PROVIDERS: LLMProviderMeta[] = [
+  {
+    id: "google-genai",
+    displayName: "Google Gemini",
+    description: "Official Gemini integration using Google Gen AI SDK",
+    defaultModel: "gemini-2.5-flash",
+  },
+  {
+    id: "openrouter",
+    displayName: "OpenRouter",
+    description: "Multi-model router supporting Anthropic, OpenAI, DeepSeek, and local models",
+    defaultModel: "google/gemini-2.5-flash",
+  },
+  {
+    id: "mock",
+    displayName: "Mock LLM Provider",
+    description: "Stateless mock provider for testing and offline development",
+    defaultModel: "mock",
+  },
+];

packages/llm/src/providers/google-genai.ts

@@ -5,6 +5,11 @@ import { llmConfig } from "../config.js";
 import { ProviderManager } from "../provider-manager.js";
 
 export class GeminiProvider implements ILLMProvider {
+  static readonly providerId = "google-genai";
+  static readonly displayName = "Google Gemini";
+  static readonly description = "Official Gemini integration using Google Gen AI SDK";
+  static readonly defaultModel = "gemini-2.5-flash";
+
   providerName = "Gemini";
   private model: ChatGoogleGenerativeAI;
   lastCalls: LLMCallRecord[] = [];

packages/llm/src/providers/mock.ts

@@ -2,6 +2,11 @@ import { z } from "zod";
 import { ILLMProvider, LLMRequest, LLMResponse, LLMCallRecord } from "../llm.js";
 
 export class MockLLMProvider implements ILLMProvider {
+  static readonly providerId = "mock";
+  static readonly displayName = "Mock LLM Provider";
+  static readonly description = "Stateless mock provider for testing and offline development";
+  static readonly defaultModel = "mock";
+
   providerName = "mock";
   private callCount = 0;
   lastCalls: LLMCallRecord[] = [];

packages/llm/src/providers/openrouter.ts

@@ -0,0 +1,80 @@
+import { z } from "zod";
+import { ChatOpenRouter } from "@langchain/openrouter";
+import { ILLMProvider, LLMRequest, LLMResponse, LLMCallRecord } from "../llm.js";
+import { llmConfig } from "../config.js";
+import { ProviderManager } from "../provider-manager.js";
+
+export class OpenRouterProvider implements ILLMProvider {
+  static readonly providerId = "openrouter";
+  static readonly displayName = "OpenRouter";
+  static readonly description = "Multi-model router supporting Anthropic, OpenAI, DeepSeek, and local models";
+  static readonly defaultModel = "google/gemini-2.5-flash";
+
+  providerName = "OpenRouter";
+  private model: ChatOpenRouter;
+  lastCalls: LLMCallRecord[] = [];
+
+  constructor(apiKey?: string, modelName?: string) {
+    let key = apiKey;
+    let model = modelName;
+
+    if (!key) {
+      const active = ProviderManager.getActive();
+      if (active) {
+        key = active.apiKey;
+        if (!model) {
+          model = active.modelName;
+        }
+      }
+    }
+
+    if (!key) {
+      key = llmConfig.OPENROUTER_API_KEY;
+    }
+
+    if (!key) {
+      throw new Error("OPENROUTER_API_KEY is required to initialize OpenRouterProvider");
+    }
+
+    this.model = new ChatOpenRouter({
+      apiKey: key,
+      model: model || "google/gemini-2.5-flash",
+    });
+  }
+
+  async generateStructuredResponse<T extends z.ZodTypeAny>(
+    request: LLMRequest<T>,
+  ): Promise<LLMResponse<z.infer<T>>> {
+    const structuredModel = this.model.withStructuredOutput(request.schema, { includeRaw: true });
+    const result = (await structuredModel.invoke([
+      { role: "system", content: request.systemPrompt },
+      { role: "user", content: request.userContext },
+    ])) as unknown as {
+      parsed?: z.infer<T>;
+      raw?: {
+        usage_metadata?: {
+          input_tokens?: number;
+          output_tokens?: number;
+          total_tokens?: number;
+        };
+      };
+    };
+
+    const parsed = result?.parsed;
+    const raw = result?.raw;
+
+    const usage = raw?.usage_metadata ? {
+      inputTokens: raw.usage_metadata.input_tokens || 0,
+      outputTokens: raw.usage_metadata.output_tokens || 0,
+      totalTokens: raw.usage_metadata.total_tokens || 0,
+    } : undefined;
+
+    this.lastCalls.push({
+      systemPrompt: request.systemPrompt,
+      userContext: request.userContext,
+      usage,
+    });
+
+    return { success: true, data: parsed, usage };
+  }
+}

packages/llm/tests/openrouter.test.ts

@@ -0,0 +1,107 @@
+import { describe, test, expect, vi } from "vitest";
+import { z } from "zod";
+import { OpenRouterProvider } from "../src/providers/openrouter.js";
+import { llmConfig } from "../src/config.js";
+
+// Mock the ChatOpenRouter class
+vi.mock("@langchain/openrouter", () => {
+  return {
+    ChatOpenRouter: class {
+      config: unknown;
+      constructor(config: unknown) {
+        this.config = config;
+      }
+      withStructuredOutput = vi.fn().mockImplementation(() => {
+        return {
+          invoke: vi.fn().mockImplementation(async () => {
+            // Return a mock output that matches the includeRaw: true structure
+            return {
+              parsed: {
+                name: "mocked response",
+                success: true,
+              },
+              raw: {
+                usage_metadata: {
+                  input_tokens: 10,
+                  output_tokens: 5,
+                  total_tokens: 15,
+                },
+              },
+            };
+          }),
+        };
+      });
+    },
+  };
+});
+
+describe("OpenRouterProvider Unit Tests (Tier 1)", () => {
+  test("initializes successfully with a provided apiKey", () => {
+    const provider = new OpenRouterProvider("dummy-key");
+    expect(provider.providerName).toBe("OpenRouter");
+  });
+
+  test("initializes successfully with apiKey from config", () => {
+    // Save current config
+    const originalKey = llmConfig.OPENROUTER_API_KEY;
+    llmConfig.OPENROUTER_API_KEY = "env-dummy-key";
+    
+    try {
+      const provider = new OpenRouterProvider();
+      expect(provider.providerName).toBe("OpenRouter");
+    } finally {
+      llmConfig.OPENROUTER_API_KEY = originalKey;
+    }
+  });
+
+  test("throws error if no API key is provided or in config", () => {
+    // Save current config
+    const originalKey = llmConfig.OPENROUTER_API_KEY;
+    llmConfig.OPENROUTER_API_KEY = undefined;
+
+    try {
+      expect(() => new OpenRouterProvider()).toThrow(
+        "OPENROUTER_API_KEY is required to initialize OpenRouterProvider"
+      );
+    } finally {
+      llmConfig.OPENROUTER_API_KEY = originalKey;
+    }
+  });
+
+  test("generateStructuredResponse invokes the model with structured output, records usage and updates lastCalls", async () => {
+    const provider = new OpenRouterProvider("dummy-key");
+    const TestSchema = z.object({
+      name: z.string(),
+      success: z.boolean(),
+    });
+
+    const response = await provider.generateStructuredResponse({
+      systemPrompt: "system prompt",
+      userContext: "user context",
+      schema: TestSchema,
+    });
+
+    expect(response.success).toBe(true);
+    expect(response.data).toEqual({
+      name: "mocked response",
+      success: true,
+    });
+
+    expect(response.usage).toEqual({
+      inputTokens: 10,
+      outputTokens: 5,
+      totalTokens: 15,
+    });
+
+    expect(provider.lastCalls.length).toBe(1);
+    expect(provider.lastCalls[0]).toEqual({
+      systemPrompt: "system prompt",
+      userContext: "user context",
+      usage: {
+        inputTokens: 10,
+        outputTokens: 5,
+        totalTokens: 15,
+      },
+    });
+  });
+});

pnpm-workspace.yaml

@@ -8,6 +8,7 @@ allowBuilds:
   esbuild: true
   sharp: true
   unrs-resolver: true
+  workerd: true
 minimumReleaseAgeExclude:
   - '@astrojs/telemetry@3.3.3'
   - astro@7.0.7

web/docs/astro.config.mjs

@@ -5,10 +5,12 @@ import mermaid from "astro-mermaid";
 export default defineConfig({
   site: "https://omnia.omniasimulation.com",
   base: "/docs",
+  outDir: "./dist/docs",
   integrations: [
     mermaid(),
     starlight({
       title: "Omnia Docs",
+      favicon: "/favicon.png",
       logo: {
         src: "./src/assets/img/logo.png",
         replacesTitle: true,

web/docs/package.json

@@ -7,11 +7,17 @@
     "dev": "astro dev",
     "start": "astro dev",
     "build": "astro build",
-    "preview": "astro preview"
+    "preview": "astro preview",
+    "preview:wrangler": "astro build && wrangler dev"
   },
   "dependencies": {
     "@astrojs/starlight": "^0.41.3",
     "astro": "^7.0.7",
+    "astro-mermaid": "^2.1.0",
+    "mermaid": "^11.16.0",
     "sharp": "^0.33.5"
+  },
+  "devDependencies": {
+    "wrangler": "^4.107.1"
   }
 }

web/docs/src/content/docs/architecture/llm-providers.md

@@ -21,9 +21,10 @@ export interface ILLMProvider {
 }
 ```
 
-The codebase provides two primary implementations:
+The codebase provides three primary implementations:
 1. **`GeminiProvider`:** The production provider utilizing Google's Gemini Models via the `@langchain/google-genai` SDK.
-2. **`MockLLMProvider`:** A stateless, pre-programmed mock provider used for fast, deterministic unit testing and local integration tests.
+2. **`OpenRouterProvider`:** The production provider utilizing OpenRouter via the `@langchain/openrouter` SDK, allowing routing through various third-party and local models.
+3. **`MockLLMProvider`:** A stateless, pre-programmed mock provider used for fast, deterministic unit testing and local integration tests.
 
 ---
 
@@ -43,10 +44,10 @@ export interface LLMProviderInstance {
 ```
 
 Users can register multiple provider instances in the **Configuration Page** under the GUI. Each instance is given:
-* A friendly, human-readable name (e.g., `"Gemini Production Key"`, `"Experimental Gemini Pro"`).
-* A provider type (e.g., `google-genai`, `mock`).
+* A friendly, human-readable name (e.g., `"Gemini Production Key"`, `"OpenRouter Claude Key"`).
+* A provider type (e.g., `google-genai`, `openrouter`, `mock`).
 * An API key credential.
-* A custom target model name (e.g., `gemini-2.5-flash` or `gemini-2.5-pro`).
+* A custom target model name (e.g., `gemini-2.5-flash`, `anthropic/claude-3-5-sonnet`, or local model paths).
 * An **Active** status flag (one key is marked as globally active).
 
 Configurations are stored globally in `data/settings.db` (separated from specific simulation run databases like `data/sim-*.db` to keep key storage and audit logs isolated).
@@ -59,10 +60,10 @@ During a simulation run, the engine executes four distinct LLM operations. To op
 
 | Task Name | Key ID | Description | Default Model |
 | :--- | :--- | :--- | :--- |
-| **Actor Prose Generation** | `actor-prose` | Generates roleplay and narrative behavioral prose for Non-Player Characters. | `gemini-2.5-flash` |
-| **LLM Validator** | `llm-validator` | Arbitrates and validates proposed actions against the world state rules and constraints. | `gemini-2.5-flash` |
-| **Intent Decoder** | `intent-decoder` | Parses and splits free-text actions/prose into structured intent sequences. | `gemini-2.5-flash` |
-| **TimeDelta Generator** | `timedelta` | Calculates the duration of character actions to advance the game clock. | `gemini-2.5-flash` |
+| **Actor Prose Generation** | `actor-prose` | Generates roleplay and narrative behavioral prose for Non-Player Characters. | `gemini-2.5-flash` / `google/gemini-2.5-flash` |
+| **LLM Validator** | `llm-validator` | Arbitrates and validates proposed actions against the world state rules and constraints. | `gemini-2.5-flash` / `google/gemini-2.5-flash` |
+| **Intent Decoder** | `intent-decoder` | Parses and splits free-text actions/prose into structured intent sequences. | `gemini-2.5-flash` / `google/gemini-2.5-flash` |
+| **TimeDelta Generator** | `timedelta` | Calculates the duration of character actions to advance the game clock. | `gemini-2.5-flash` / `google/gemini-2.5-flash` |
 
 If no specific provider instance is mapped to a task, the task automatically routes to the globally marked **Active** provider instance.
 
@@ -72,7 +73,7 @@ If no specific provider instance is mapped to a task, the task automatically rou
 
 To maintain backwards-compatibility and support headless runs, live evaluation suites, and automated unit tests without requiring database pre-configuration, the config manager supports **self-bootstrapping**:
 
-1. When the provider manager queries the active key instance, if `data/settings.db` contains **0 registered keys**, it checks the process environment for `GOOGLE_API_KEY`.
+1. When the provider manager queries the active key instance, if `data/settings.db` contains **0 registered keys**, it checks the process environment for `GOOGLE_API_KEY` or `OPENROUTER_API_KEY`.
 2. If `process.env.GOOGLE_API_KEY` is present, it automatically creates, saves, and activates a default provider instance (`Default (Env)`) in `settings.db`.
 3. If database write locks occur (e.g., during high-concurrency Vitest test suites), the system seamlessly returns a temporary in-memory `LLMProviderInstance` to keep execution fluent and error-free.
 

web/docs/wrangler.jsonc

@@ -0,0 +1,14 @@
+{
+  "$schema": "node_modules/wrangler/config-schema.json",
+  "name": "omnia-docs",
+  "compatibility_date": "2026-07-09",
+  "assets": {
+    "directory": "./dist"
+  },
+  "routes": [
+    {
+      "pattern": "omnia.adityagupta.dev/docs*",
+      "zone_name": "adityagupta.dev"
+    }
+  ]
+}