diff --git a/.gitignore b/.gitignore
index 206cd56..2144e24 100644
--- a/.gitignore
+++ b/.gitignore
@@ -136,10 +136,12 @@ dist
 /dashboard/
 /extension/
 /graphics/
+/nodecg/
+/shared/domain/
 /shared/dist/
 
 # Local runtime database
 /db/
 *.sqlite3
 /scoreko-electron-dev/
-/packs/
\ No newline at end of file
+/packs/
diff --git a/docs/refactor/PHASE_1_SUMMARY.md b/docs/refactor/PHASE_1_SUMMARY.md
new file mode 100644
index 0000000..74228f0
--- /dev/null
+++ b/docs/refactor/PHASE_1_SUMMARY.md
@@ -0,0 +1,56 @@
+# Phase 1 Summary
+
+## Scope
+
+Executed the base architecture phase only. This phase focused on structure, boundaries, shared contracts and compatibility without changing UX, overlay visuals or large feature logic.
+
+## Completed
+
+- Added the `src/nodecg` boundary:
+  - `src/nodecg/browser`
+  - `src/nodecg/extension`
+  - centralized `replicantNames`
+  - centralized `messageNames`
+- Moved browser replicant access out of `src/browser_shared`.
+- Moved dashboard stores to `src/dashboard/stores`.
+- Moved pure country helpers to `src/shared/domain/players`.
+- Moved pack config and pack types to `src/shared/domain/packs`.
+- Added pack replicant schemas:
+  - `installedPacks`
+  - `packRegistry`
+  - `downloadStates`
+  - `availableUpdates`
+- Added generated TypeScript declarations for the new pack schemas.
+- Removed dead example code:
+  - `exampleReplicant` schema/type
+  - `ExampleType`
+  - `src/extension/example.ts`
+- Removed redundant stale JS files from `src/shared`.
+- Updated extension bootstrap to use an explicit NodeCG context boundary.
+- Routed browser messages through `src/nodecg/browser/messages.ts`.
+- Routed extension message registration through `src/nodecg/extension/messages.ts`.
+- Routed pack replicant creation through NodeCG pack boundary services.
+- Updated build config so generated NodeCG/shared extension outputs are ignored and cleaned.
+
+## Preserved
+
+- No overlay UX, CSS, SVG, layout or animation logic was intentionally changed.
+- No large dashboard view was split or rewritten.
+- `pack-manager.ts` behavior was preserved; only imports, types, replicant/message names and boundaries were normalized.
+- Public NodeCG message names were kept unchanged for compatibility.
+- Public replicant names and defaults were kept unchanged.
+
+## Verification
+
+- `pnpm.cmd exec vue-tsc -p tsconfig.browser.json --noEmit`: passed.
+- `pnpm.cmd exec tsc -b tsconfig.extension.json --pretty false`: passed.
+- `pnpm.cmd exec eslint`: passed with 0 errors and existing Vue formatting warnings.
+- `pnpm.cmd run build`: passed.
+
+## Remaining For Later Phases
+
+- Controlled rewrite of `pack-manager.ts`.
+- Controlled rewrite of `usePackRegistry` and `fighting-characters.ts`.
+- Formal provider module split for Start.gg and Challonge.
+- Splitting `Players.vue` and `Settings.vue`.
+- Overlay view models and visual baseline work.
diff --git a/package.json b/package.json
index 48f6928..123162f 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
   "type": "module",
   "scripts": {
     "autofix": "eslint --fix",
-    "prebuild": "trash ./extension && trash ./node_modules/.vite && trash ./shared/dist && trash ./dashboard && trash ./graphics",
+    "prebuild": "trash ./extension && trash ./nodecg && trash ./node_modules/.vite && trash ./shared/domain && trash ./shared/dist && trash ./dashboard && trash ./graphics",
     "build": "vite build && tsc -b tsconfig.extension.json",
     "lint": "eslint",
     "schema-types": "nodecg schema-types",
diff --git a/schemas/availableUpdates.json b/schemas/availableUpdates.json
new file mode 100644
index 0000000..d50c50d
--- /dev/null
+++ b/schemas/availableUpdates.json
@@ -0,0 +1,18 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "type": "object",
+  "additionalProperties": {
+    "type": "object",
+    "additionalProperties": false,
+    "properties": {
+      "installedVersion": {
+        "type": "string"
+      },
+      "latestVersion": {
+        "type": "string"
+      }
+    },
+    "required": ["installedVersion", "latestVersion"]
+  },
+  "default": {}
+}
diff --git a/schemas/downloadStates.json b/schemas/downloadStates.json
new file mode 100644
index 0000000..cc54f7f
--- /dev/null
+++ b/schemas/downloadStates.json
@@ -0,0 +1,22 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "type": "object",
+  "additionalProperties": {
+    "type": "object",
+    "additionalProperties": false,
+    "properties": {
+      "status": {
+        "type": "string",
+        "enum": ["idle", "fetching-manifest", "downloading", "done", "error"]
+      },
+      "progress": {
+        "type": "number"
+      },
+      "error": {
+        "type": "string"
+      }
+    },
+    "required": ["status", "progress"]
+  },
+  "default": {}
+}
diff --git a/schemas/exampleReplicant.json b/schemas/exampleReplicant.json
deleted file mode 100644
index 55d7423..0000000
--- a/schemas/exampleReplicant.json
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-  "$schema": "http://json-schema.org/draft-07/schema#",
-  "type": "object",
-  "additionalProperties": false,
-  "properties": {
-    "exampleProperty": {
-      "type": "string",
-      "default": "exampleString"
-    }
-  },
-  "required": [
-    "exampleProperty"
-  ]
-}
diff --git a/schemas/installedPacks.json b/schemas/installedPacks.json
new file mode 100644
index 0000000..d2da904
--- /dev/null
+++ b/schemas/installedPacks.json
@@ -0,0 +1,8 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "type": "array",
+  "items": {
+    "type": "string"
+  },
+  "default": []
+}
diff --git a/schemas/packRegistry.json b/schemas/packRegistry.json
new file mode 100644
index 0000000..cda76e7
--- /dev/null
+++ b/schemas/packRegistry.json
@@ -0,0 +1,50 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "type": ["object", "null"],
+  "additionalProperties": false,
+  "properties": {
+    "schemaVersion": {
+      "type": "integer"
+    },
+    "updatedAt": {
+      "type": "string"
+    },
+    "packs": {
+      "type": "array",
+      "items": {
+        "type": "object",
+        "additionalProperties": false,
+        "properties": {
+          "id": { "type": "string" },
+          "name": { "type": "string" },
+          "version": { "type": "string" },
+          "totalSizeBytes": { "type": "number" },
+          "logoPath": { "type": "string" },
+          "characterCount": { "type": "integer" },
+          "palette": {
+            "type": "object",
+            "additionalProperties": false,
+            "properties": {
+              "start": { "type": "string" },
+              "end": { "type": "string" }
+            },
+            "required": ["start", "end"]
+          },
+          "bundled": { "type": "boolean" }
+        },
+        "required": [
+          "id",
+          "name",
+          "version",
+          "totalSizeBytes",
+          "logoPath",
+          "characterCount",
+          "palette",
+          "bundled"
+        ]
+      }
+    }
+  },
+  "required": ["schemaVersion", "updatedAt", "packs"],
+  "default": null
+}
diff --git a/src/browser_shared/replicants.ts b/src/browser_shared/replicants.ts
deleted file mode 100644
index a161499..0000000
--- a/src/browser_shared/replicants.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-import { useReplicant } from 'nodecg-vue-composable';
-import type { Schemas } from '../types';
-
-// YOU MUST CHANGE THIS TO YOUR BUNDLE'S NAME!
-const thisBundle = 'scoreko-dev';
-
-/**
- * This is where you can declare all of your replicants to import easily into other (browser based) files.
- * "useReplicant" is a helper composable to make accessing/modifying replicants easier.
- * For more information see https://github.com/Dan-Shields/nodecg-vue-composable
- */
-export const exampleReplicant = useReplicant<Schemas.ExampleReplicant>('exampleReplicant', thisBundle);
-export const playersReplicant = useReplicant<Schemas.Players>('players', thisBundle);
-export const scoreboardReplicant = useReplicant<Schemas.Scoreboard>('scoreboard', thisBundle);
-export const graphicsSettingsReplicant = useReplicant<Schemas.GraphicsSettings>('graphicsSettings', thisBundle);
-
-export const commentaryReplicant = useReplicant<Schemas.Commentary>('commentary', thisBundle);
diff --git a/src/dashboard/scoreko-dev/components/BracketPanel.vue b/src/dashboard/scoreko-dev/components/BracketPanel.vue
index 5ab69fe..cec2943 100644
--- a/src/dashboard/scoreko-dev/components/BracketPanel.vue
+++ b/src/dashboard/scoreko-dev/components/BracketPanel.vue
@@ -1,7 +1,7 @@
 <script setup lang="ts">
 import { computed, onMounted, ref, watch } from 'vue';
 import { t } from '../i18n';
-import { useScoreboardStore } from '../stores/scoreboard';
+import { useScoreboardStore } from '../../stores/scoreboard';
 
 const scoreboardStore = useScoreboardStore();
 
@@ -245,4 +245,4 @@ onMounted(() => {
 .bracket-panel__preview-text--custom {
   color: var(--q-secondary, #26a69a);
 }
-</style>
\ No newline at end of file
+</style>
diff --git a/src/dashboard/scoreko-dev/components/CommentaryPanel.vue b/src/dashboard/scoreko-dev/components/CommentaryPanel.vue
index 22fe245..3c454c7 100644
--- a/src/dashboard/scoreko-dev/components/CommentaryPanel.vue
+++ b/src/dashboard/scoreko-dev/components/CommentaryPanel.vue
@@ -1,7 +1,7 @@
 <script setup lang="ts">
 import { computed } from 'vue';
 import { t } from '../i18n';
-import { useCommentaryStore } from '../stores/commentary';
+import { useCommentaryStore } from '../../stores/commentary';
 
 const commentaryStore = useCommentaryStore();
 
@@ -280,4 +280,4 @@ const rightHandlePreview = computed(() =>
     flex-direction: row;
   }
 }
-</style>
\ No newline at end of file
+</style>
diff --git a/src/dashboard/scoreko-dev/components/GamePackDownloadDialog.vue b/src/dashboard/scoreko-dev/components/GamePackDownloadDialog.vue
index 403baec..53996e6 100644
--- a/src/dashboard/scoreko-dev/components/GamePackDownloadDialog.vue
+++ b/src/dashboard/scoreko-dev/components/GamePackDownloadDialog.vue
@@ -6,8 +6,8 @@
 // ─────────────────────────────────────────────────────────────────────────────
 
 import { computed, watch } from 'vue';
-import { getPackLogoUrl } from '../../../shared/pack-config';
-import type { PackRegistryEntry } from '../../../shared/pack-types';
+import { getPackLogoUrl } from '../../../shared/domain/packs/config';
+import type { PackRegistryEntry } from '../../../shared/domain/packs/types';
 import { usePackRegistry } from '../composables/usePackRegistry';
 
 // ── Props / emits ─────────────────────────────────────────────────────────────
diff --git a/src/dashboard/scoreko-dev/components/PlayerSidePanel.vue b/src/dashboard/scoreko-dev/components/PlayerSidePanel.vue
index 5fc2a92..7f26a63 100644
--- a/src/dashboard/scoreko-dev/components/PlayerSidePanel.vue
+++ b/src/dashboard/scoreko-dev/components/PlayerSidePanel.vue
@@ -3,7 +3,7 @@ import { computed, inject } from 'vue';
 import { CHARACTER_GAME_KEY } from '../composables/useCharacterGame';
 import { usePlayerSide } from '../composables/usePlayerSide';
 import { t } from '../i18n';
-import { useScoreboardStore } from '../stores/scoreboard';
+import { useScoreboardStore } from '../../stores/scoreboard';
 
 // ---------------------------------------------------------------------------
 // Props
diff --git a/src/dashboard/scoreko-dev/components/ScoreCenterPanel.vue b/src/dashboard/scoreko-dev/components/ScoreCenterPanel.vue
index efcb1fd..0d3af7a 100644
--- a/src/dashboard/scoreko-dev/components/ScoreCenterPanel.vue
+++ b/src/dashboard/scoreko-dev/components/ScoreCenterPanel.vue
@@ -3,7 +3,7 @@ import { inject, onMounted, onUnmounted, ref } from 'vue';
 import { CHARACTER_GAME_KEY } from '../composables/useCharacterGame';
 import { usePackRegistry } from '../composables/usePackRegistry';
 import { t } from '../i18n';
-import { useScoreboardStore } from '../stores/scoreboard';
+import { useScoreboardStore } from '../../stores/scoreboard';
 import GamePackDownloadDialog from './GamePackDownloadDialog.vue';
 
 const scoreboardStore = useScoreboardStore();
@@ -46,11 +46,11 @@ const onPackDownloaded = (gameName: string) => {
 };
 
 // ── Estado del diálogo de actualización ───────────────────────────────────────
-const pendingUpdateEntry = ref<import('../../../shared/pack-types').PackRegistryEntry | null>(null);
+const pendingUpdateEntry = ref<import('../../../shared/domain/packs/types').PackRegistryEntry | null>(null);
 const pendingUpdateInfo  = ref<{ installedVersion: string; latestVersion: string } | undefined>(undefined);
 const showUpdateDialog   = ref(false);
 
-const openUpdateDialog = (opt: import('../../../shared/pack-types').GameSelectOption, event: Event) => {
+const openUpdateDialog = (opt: import('../../../shared/domain/packs/types').GameSelectOption, event: Event) => {
   event.stopPropagation(); // evitar que el QItem cambie la selección
   pendingUpdateEntry.value = opt.registryEntry;
   pendingUpdateInfo.value  = opt.updateInfo;
diff --git a/src/dashboard/scoreko-dev/composables/useCharacterGame.ts b/src/dashboard/scoreko-dev/composables/useCharacterGame.ts
index e2df9e5..127f8d7 100644
--- a/src/dashboard/scoreko-dev/composables/useCharacterGame.ts
+++ b/src/dashboard/scoreko-dev/composables/useCharacterGame.ts
@@ -14,8 +14,8 @@
 
 import { computed, ref, watch, type InjectionKey, type Ref } from 'vue';
 import { getCharactersByGame, getDefaultCharactersByGame, installedPacksRevision } from '../../../shared/fighting-characters';
-import type { GameSelectOption, PackRegistryEntry } from '../../../shared/pack-types';
-import { useScoreboardStore } from '../stores/scoreboard';
+import type { GameSelectOption, PackRegistryEntry } from '../../../shared/domain/packs/types';
+import { useScoreboardStore } from '../../stores/scoreboard';
 import { usePackRegistry } from './usePackRegistry';
 
 // ── Types ─────────────────────────────────────────────────────────────────────
diff --git a/src/dashboard/scoreko-dev/composables/useCountryFilter.ts b/src/dashboard/scoreko-dev/composables/useCountryFilter.ts
index 0b865ea..d6ba689 100644
--- a/src/dashboard/scoreko-dev/composables/useCountryFilter.ts
+++ b/src/dashboard/scoreko-dev/composables/useCountryFilter.ts
@@ -1,5 +1,5 @@
 import { computed, ref, watch } from 'vue';
-import { getCountryLabel, getCountryOptions } from '../../../shared/countries';
+import { getCountryLabel, getCountryOptions } from '../../../shared/domain/players/countries';
 import { locale } from '../i18n';
 
 /**
diff --git a/src/dashboard/scoreko-dev/composables/useIntegration.ts b/src/dashboard/scoreko-dev/composables/useIntegration.ts
index 2c3118b..9761d78 100644
--- a/src/dashboard/scoreko-dev/composables/useIntegration.ts
+++ b/src/dashboard/scoreko-dev/composables/useIntegration.ts
@@ -1,4 +1,5 @@
 import { computed, onBeforeUnmount, onMounted, reactive, ref, watch } from 'vue';
+import { sendNodecgMessage } from '../../../nodecg/browser/messages';
 
 // ─── Tipos ─────────────────────────────────────────────────────────────────────
 
@@ -67,17 +68,6 @@ export interface UseIntegrationOptions {
 
 // ─── Utilidad para mensajes NodeCG ─────────────────────────────────────────────
 
-const sendNodeCGMessage = <T>(messageName: string, payload: unknown): Promise<T> =>
-  new Promise((resolve, reject) => {
-    nodecg.sendMessage(messageName, payload, (error: unknown, response: unknown) => {
-      if (error) {
-        reject(new Error(String(error)));
-        return;
-      }
-      resolve(response as T);
-    });
-  });
-
 // ─── Composable ────────────────────────────────────────────────────────────────
 
 export function useIntegration(options: UseIntegrationOptions) {
@@ -165,7 +155,7 @@ export function useIntegration(options: UseIntegrationOptions) {
     tournamentsError.value = '';
     loadingTournaments.value = true;
     try {
-      const tournaments = await sendNodeCGMessage<IntegrationTournament[]>(
+      const tournaments = await sendNodecgMessage<IntegrationTournament[]>(
         `${messagePrefix}:fetchRecentTournaments`,
         { token: currentToken },
       );
@@ -204,7 +194,7 @@ export function useIntegration(options: UseIntegrationOptions) {
     players.value = [];
 
     try {
-      const importedPlayers = await sendNodeCGMessage<IntegrationPlayer[]>(
+      const importedPlayers = await sendNodecgMessage<IntegrationPlayer[]>(
         `${messagePrefix}:fetchTournamentPlayers`,
         { token: token.value.trim(), slug: tournament.slug },
       );
@@ -325,7 +315,7 @@ export function useIntegration(options: UseIntegrationOptions) {
     if (!oauthSessionId.value) return;
 
     try {
-      const status = await sendNodeCGMessage<OAuthStatusResponse>(
+      const status = await sendNodecgMessage<OAuthStatusResponse>(
         `${messagePrefix}:getOAuthSessionStatus`,
         { sessionId: oauthSessionId.value },
       );
@@ -362,7 +352,7 @@ export function useIntegration(options: UseIntegrationOptions) {
     stopPolling();
 
     try {
-      const session = await sendNodeCGMessage<OAuthSessionResponse>(
+      const session = await sendNodecgMessage<OAuthSessionResponse>(
         `${messagePrefix}:createOAuthSession`,
         {},
       );
diff --git a/src/dashboard/scoreko-dev/composables/usePackRegistry.ts b/src/dashboard/scoreko-dev/composables/usePackRegistry.ts
index 5cdba59..3c13bb9 100644
--- a/src/dashboard/scoreko-dev/composables/usePackRegistry.ts
+++ b/src/dashboard/scoreko-dev/composables/usePackRegistry.ts
@@ -10,39 +10,20 @@ import {
   registerInstalledPack,
   unregisterInstalledPack,
 } from '../../../shared/fighting-characters';
-import { BUNDLE_NAME } from '../../../shared/pack-config';
+import { sendNodecgCommand, sendNodecgMessage } from '../../../nodecg/browser/messages';
+import { createPackBrowserReplicants } from '../../../nodecg/browser/packReplicants';
+import { messageNames } from '../../../nodecg/messageNames';
 import type {
   GameSelectOption,
   PackDownloadState,
   PackManifest,
-  PackRegistry
-} from '../../../shared/pack-types';
+  PackRegistry,
+  PackUpdateInfo,
+} from '../../../shared/domain/packs/types';
 
 // ── NodeCG global type declarations ──────────────────────────────────────────
 // NodeCG injects these into the browser window via its bundle script.
 
-declare const NodeCG: {
-  Replicant: <T>(
-    name: string,
-    bundleName: string,
-    opts?: { defaultValue?: T },
-  ) => {
-    value: T;
-    on(event: 'change', handler: (newVal: T, oldVal?: T) => void): void;
-    off(event: string, handler: (...args: unknown[]) => void): void;
-  };
-  waitForReplicants: (...reps: unknown[]) => Promise<void>;
-};
-
-declare const nodecg: {
-  sendMessage(name: string, data?: unknown): void;
-  sendMessage(
-    name: string,
-    data: unknown,
-    cb: (err: Error | null, result?: unknown) => void,
-  ): void;
-};
-
 // ── Module-level singleton state ──────────────────────────────────────────────
 
 let initialized = false;
@@ -50,7 +31,7 @@ let initialized = false;
 const registry = ref<PackRegistry | null>(null);
 const installedPackIds = ref<string[]>([]);
 const downloadStates = ref<Record<string, PackDownloadState>>({});
-const availableUpdates = ref<Record<string, { installedVersion: string; latestVersion: string }>>({});
+const availableUpdates = ref<Record<string, PackUpdateInfo>>({});
 
 // Tracks which installed pack manifests have been loaded into fighting-characters.ts
 const loadedManifestIds = new Set<string>();
@@ -70,15 +51,14 @@ const formatBytes = (bytes: number): string => {
 const loadInstalledManifest = (packId: string): void => {
   if (loadedManifestIds.has(packId)) return;
 
-  nodecg.sendMessage('readLocalManifest', packId, (err, result) => {
-    if (err) {
+  sendNodecgMessage<PackManifest>(messageNames.packs.readLocalManifest, packId)
+    .then((manifest) => {
+      registerInstalledPack(manifest);
+      loadedManifestIds.add(packId);
+    })
+    .catch((err: unknown) => {
       console.error(`[usePackRegistry] Failed to load manifest for "${packId}":`, err);
-      return;
-    }
-    const manifest = result as PackManifest;
-    registerInstalledPack(manifest);
-    loadedManifestIds.add(packId);
-  });
+    });
 };
 
 // ── Replicant setup (runs once) ───────────────────────────────────────────────
@@ -87,21 +67,10 @@ const initReplicants = (): void => {
   if (initialized) return;
   initialized = true;
 
-  const registryRep = NodeCG.Replicant<PackRegistry | null>('packRegistry', BUNDLE_NAME, {
-    defaultValue: null,
-  });
-  const installedRep = NodeCG.Replicant<string[]>('installedPacks', BUNDLE_NAME, {
-    defaultValue: [],
-  });
-  const statesRep = NodeCG.Replicant<Record<string, PackDownloadState>>('downloadStates', BUNDLE_NAME, {
-    defaultValue: {},
-  });
+  const { registryRep, installedRep, statesRep, updatesRep, waitUntilReady } =
+    createPackBrowserReplicants();
 
-  const updatesRep = NodeCG.Replicant<Record<string, { installedVersion: string; latestVersion: string }>>('availableUpdates', BUNDLE_NAME, {
-    defaultValue: {},
-  });
-
-  NodeCG.waitForReplicants(registryRep, installedRep, statesRep, updatesRep).then(() => {
+  waitUntilReady().then(() => {
     // Hydrate initial values
     registry.value = registryRep.value;
     installedPackIds.value = installedRep.value ?? [];
@@ -222,26 +191,26 @@ export function usePackRegistry(): PackRegistryContext {
     `/packs/${packId}/logo.png`;
 
   const fetchRegistry = (): void => {
-    nodecg.sendMessage('fetchPackRegistry', undefined, (err) => {
-      if (err) console.error('[usePackRegistry] fetchPackRegistry failed:', err);
+    sendNodecgCommand(messageNames.packs.fetchRegistry).catch((err: unknown) => {
+      console.error('[usePackRegistry] fetchPackRegistry failed:', err);
     });
   };
 
   const downloadPack = (packId: string): void => {
-    nodecg.sendMessage('downloadPack', packId, (err) => {
-      if (err) console.error(`[usePackRegistry] downloadPack "${packId}" failed:`, err);
+    sendNodecgCommand(messageNames.packs.download, packId).catch((err: unknown) => {
+      console.error(`[usePackRegistry] downloadPack "${packId}" failed:`, err);
     });
   };
 
   const uninstallPack = (packId: string): void => {
-    nodecg.sendMessage('uninstallPack', packId, (err) => {
-      if (err) console.error(`[usePackRegistry] uninstallPack "${packId}" failed:`, err);
+    sendNodecgCommand(messageNames.packs.uninstall, packId).catch((err: unknown) => {
+      console.error(`[usePackRegistry] uninstallPack "${packId}" failed:`, err);
     });
   };
 
   const updatePack = (packId: string): void => {
-    nodecg.sendMessage('updatePack', packId, (err) => {
-      if (err) console.error(`[usePackRegistry] updatePack "${packId}" failed:`, err);
+    sendNodecgCommand(messageNames.packs.update, packId).catch((err: unknown) => {
+      console.error(`[usePackRegistry] updatePack "${packId}" failed:`, err);
     });
   };
 
diff --git a/src/dashboard/scoreko-dev/composables/usePlayerSide.ts b/src/dashboard/scoreko-dev/composables/usePlayerSide.ts
index 67995b7..c8ad560 100644
--- a/src/dashboard/scoreko-dev/composables/usePlayerSide.ts
+++ b/src/dashboard/scoreko-dev/composables/usePlayerSide.ts
@@ -1,6 +1,6 @@
 import { computed, ref, watch, watchEffect } from 'vue';
-import { useScoreboardStore } from '../stores/scoreboard';
-import { usePlayersStore } from '../stores/players';
+import { useScoreboardStore } from '../../stores/scoreboard';
+import { usePlayersStore } from '../../stores/players';
 import type { Schemas } from '../../../types';
 import { t } from '../i18n';
 import { useCountryFilter } from './useCountryFilter';
@@ -343,4 +343,4 @@ export function usePlayerSide(side: 'left' | 'right') {
     saveCountryChange,
     onCountryFilter,
   };
-}
\ No newline at end of file
+}
diff --git a/src/dashboard/scoreko-dev/main.vue b/src/dashboard/scoreko-dev/main.vue
index 95d0ba3..cc10022 100644
--- a/src/dashboard/scoreko-dev/main.vue
+++ b/src/dashboard/scoreko-dev/main.vue
@@ -1,8 +1,8 @@
 <script setup lang="ts">
 import { computed, onMounted, onUnmounted, ref, watch } from 'vue';
 import { t } from './i18n';
-import { useScoreboardStore } from './stores/scoreboard';
-import { isShortcutMatch, useShortcutSettingsStore } from './stores/shortcut-settings';
+import { useScoreboardStore } from '../stores/scoreboard';
+import { isShortcutMatch, useShortcutSettingsStore } from '../stores/shortcut-settings';
 
 // ── Sidebar collapse ──────────────────────────────────────────────────────────
 const LS_KEY = 'sidebar_collapsed';
@@ -383,4 +383,4 @@ onUnmounted(() => {
   70%  { box-shadow: 0 0 0 6px rgba(34, 197, 94, 0);    }
   100% { box-shadow: 0 0 0 0   rgba(34, 197, 94, 0);    }
 }
-</style>
\ No newline at end of file
+</style>
diff --git a/src/dashboard/scoreko-dev/views/Graphics.vue b/src/dashboard/scoreko-dev/views/Graphics.vue
index 7dddfe3..1d13b48 100644
--- a/src/dashboard/scoreko-dev/views/Graphics.vue
+++ b/src/dashboard/scoreko-dev/views/Graphics.vue
@@ -2,7 +2,7 @@
 import { useHead } from '@unhead/vue';
 import { computed, ref, watch } from 'vue';
 import bundlePackage from '../../../../package.json';
-import { graphicsSettingsReplicant } from '../../../browser_shared/replicants';
+import { graphicsSettingsReplicant } from '../../../nodecg/browser/replicants';
 import { t } from '../i18n';
 
 defineOptions({ name: 'GraphicsView' });
@@ -262,4 +262,4 @@ const onDragStart = (event: DragEvent, graphic: GraphicConfig) => {
       </div>
     </div>
   </QPage>
-</template>
\ No newline at end of file
+</template>
diff --git a/src/dashboard/scoreko-dev/views/Players.vue b/src/dashboard/scoreko-dev/views/Players.vue
index f8800f2..d2ea303 100644
--- a/src/dashboard/scoreko-dev/views/Players.vue
+++ b/src/dashboard/scoreko-dev/views/Players.vue
@@ -2,11 +2,11 @@
 import { useHead } from '@unhead/vue';
 import { useQuasar, type QTableColumn } from 'quasar';
 import { computed, reactive, ref, watch } from 'vue';
-import { getCountryLabel, getCountryOptions } from '../../../shared/countries';
+import { getCountryLabel, getCountryOptions } from '../../../shared/domain/players/countries';
 import type { Schemas } from '../../../types';
 import { useIntegration } from '../composables/useIntegration';
 import { locale, t } from '../i18n';
-import { usePlayersStore } from '../stores/players';
+import { usePlayersStore } from '../../stores/players';
 
 defineOptions({ name: 'PlayersView' });
 
@@ -145,8 +145,13 @@ const openCreateDialog = () => {
 
 const openEditDialog = (row: PlayerRow) => {
   editingId.value = row.id;
-  const { id: _id, ...playerData } = row;
-  Object.assign(form, playerData);
+  Object.assign(form, {
+    gamertag: row.gamertag,
+    name: row.name,
+    country: row.country,
+    team: row.team,
+    twitter: row.twitter,
+  });
   isDialogOpen.value = true;
 };
 
diff --git a/src/dashboard/scoreko-dev/views/Settings.vue b/src/dashboard/scoreko-dev/views/Settings.vue
index 2654b91..b8b37b5 100644
--- a/src/dashboard/scoreko-dev/views/Settings.vue
+++ b/src/dashboard/scoreko-dev/views/Settings.vue
@@ -5,12 +5,12 @@ import { computed, onBeforeUnmount, ref, watch } from 'vue';
 import { useIntegration } from '../composables/useIntegration';
 import type { Locale } from '../i18n';
 import { locale, setLocale, t } from '../i18n';
-import { usePlayersStore } from '../stores/players';
+import { usePlayersStore } from '../../stores/players';
 import {
   eventToShortcut,
   type ShortcutAction,
   useShortcutSettingsStore,
-} from '../stores/shortcut-settings';
+} from '../../stores/shortcut-settings';
 
 defineOptions({ name: 'SettingsView' });
 
diff --git a/src/dashboard/scoreko-dev/stores/commentary.ts b/src/dashboard/stores/commentary.ts
similarity index 95%
rename from src/dashboard/scoreko-dev/stores/commentary.ts
rename to src/dashboard/stores/commentary.ts
index cba56ef..676c188 100644
--- a/src/dashboard/scoreko-dev/stores/commentary.ts
+++ b/src/dashboard/stores/commentary.ts
@@ -1,7 +1,7 @@
 import { defineStore } from 'pinia';
 import { computed, ref } from 'vue';
-import { commentaryReplicant } from '../../../browser_shared/replicants';
-import type { Schemas } from '../../../types';
+import { commentaryReplicant } from '../../nodecg/browser/replicants';
+import type { Schemas } from '../../types';
 import { syncStateWithReplicant } from './store-sync';
 
 type Commentary = Schemas.Commentary;
diff --git a/src/dashboard/scoreko-dev/stores/players.ts b/src/dashboard/stores/players.ts
similarity index 94%
rename from src/dashboard/scoreko-dev/stores/players.ts
rename to src/dashboard/stores/players.ts
index a600bdc..59ee118 100644
--- a/src/dashboard/scoreko-dev/stores/players.ts
+++ b/src/dashboard/stores/players.ts
@@ -1,7 +1,7 @@
 import { defineStore } from 'pinia';
 import { computed, ref } from 'vue';
-import { playersReplicant } from '../../../browser_shared/replicants';
-import type { Schemas } from '../../../types';
+import { playersReplicant } from '../../nodecg/browser/replicants';
+import type { Schemas } from '../../types';
 import { readStorageSnapshot, syncStateWithReplicant } from './store-sync';
 
 type PlayersMap = Schemas.Players;
diff --git a/src/dashboard/scoreko-dev/stores/scoreboard.ts b/src/dashboard/stores/scoreboard.ts
similarity index 97%
rename from src/dashboard/scoreko-dev/stores/scoreboard.ts
rename to src/dashboard/stores/scoreboard.ts
index a3e3ee0..d0f9cc9 100644
--- a/src/dashboard/scoreko-dev/stores/scoreboard.ts
+++ b/src/dashboard/stores/scoreboard.ts
@@ -1,7 +1,7 @@
 import { defineStore } from 'pinia';
 import { computed, ref } from 'vue';
-import { scoreboardReplicant } from '../../../browser_shared/replicants';
-import type { Schemas } from '../../../types';
+import { scoreboardReplicant } from '../../nodecg/browser/replicants';
+import type { Schemas } from '../../types';
 import { readStorageSnapshot, syncStateWithReplicant } from './store-sync';
 
 type Scoreboard = Schemas.Scoreboard;
diff --git a/src/dashboard/scoreko-dev/stores/shortcut-settings.ts b/src/dashboard/stores/shortcut-settings.ts
similarity index 100%
rename from src/dashboard/scoreko-dev/stores/shortcut-settings.ts
rename to src/dashboard/stores/shortcut-settings.ts
diff --git a/src/dashboard/scoreko-dev/stores/store-sync.ts b/src/dashboard/stores/store-sync.ts
similarity index 100%
rename from src/dashboard/scoreko-dev/stores/store-sync.ts
rename to src/dashboard/stores/store-sync.ts
diff --git a/src/extension/challonge.ts b/src/extension/challonge.ts
index 1bcde62..9cf4317 100644
--- a/src/extension/challonge.ts
+++ b/src/extension/challonge.ts
@@ -1,4 +1,6 @@
-import { nodecg } from './util/nodecg.js';
+import { nodecg } from '../nodecg/extension/context.js';
+import { listenForMessage } from '../nodecg/extension/messages.js';
+import { messageNames } from '../nodecg/messageNames.js';
 import { createOAuthServer, type OAuthConfig } from './util/oauth-server.js';
 
 // ─── Constantes ────────────────────────────────────────────────────────────────
@@ -177,6 +179,7 @@ const exchangeOAuthCodeForToken = async (
   redirectUri: string,
   _config: OAuthConfig,
 ): Promise<string> => {
+  void _config;
   const mode = getOAuthMode();
   if (mode.type === 'dev') {
     return exchangeCodeDirectly(code, redirectUri, mode.clientId, mode.clientSecret);
@@ -415,7 +418,7 @@ const sendAck = (ack: unknown, error: string | null, response?: unknown) => {
 
 // ─── Listeners de NodeCG ───────────────────────────────────────────────────────
 
-nodecg.listenFor('challonge:createOAuthSession', async (_payload: unknown, ack) => {
+listenForMessage(messageNames.integrations.challonge.createOAuthSession, async (_payload: unknown, ack) => {
   const mode = getOAuthMode();
   let serverConfig: OAuthConfig;
 
@@ -452,7 +455,7 @@ nodecg.listenFor('challonge:createOAuthSession', async (_payload: unknown, ack)
   sendAck(ack, null, oauthServer.createSession(serverConfig));
 });
 
-nodecg.listenFor('challonge:getOAuthSessionStatus', (payload: unknown, ack) => {
+listenForMessage(messageNames.integrations.challonge.getOAuthSessionStatus, (payload: unknown, ack) => {
   const sessionId = getStringProp(payload, 'sessionId');
   if (!sessionId) {
     sendAck(ack, 'Missing OAuth session id');
@@ -468,7 +471,7 @@ nodecg.listenFor('challonge:getOAuthSessionStatus', (payload: unknown, ack) => {
   sendAck(ack, null, status);
 });
 
-nodecg.listenFor('challonge:fetchRecentTournaments', async (payload: unknown, ack) => {
+listenForMessage(messageNames.integrations.challonge.fetchRecentTournaments, async (payload: unknown, ack) => {
   const token = getStringProp(payload, 'token');
   if (!token) {
     sendAck(ack, 'Missing Challonge API token');
@@ -486,7 +489,7 @@ nodecg.listenFor('challonge:fetchRecentTournaments', async (payload: unknown, ac
   }
 });
 
-nodecg.listenFor('challonge:fetchTournamentPlayers', async (payload: unknown, ack) => {
+listenForMessage(messageNames.integrations.challonge.fetchTournamentPlayers, async (payload: unknown, ack) => {
   const token = getStringProp(payload, 'token');
   const slug = normalizeTournamentSlug(getStringProp(payload, 'slug'));
 
diff --git a/src/extension/example.ts b/src/extension/example.ts
deleted file mode 100644
index 078256d..0000000
--- a/src/extension/example.ts
+++ /dev/null
@@ -1,15 +0,0 @@
-import type { ExampleType } from '../types/index.js';
-import { nodecg } from './util/nodecg.js';
-import { exampleReplicant } from './util/replicants.js';
-
-// Example code:
-// Log to show things are working.
-nodecg.log.info('Extension code working!');
-// Access this bundle's configuration with no type assertion needed.
-// eslint-disable-next-line @typescript-eslint/no-unused-vars
-const configProperty = nodecg.bundleConfig.exampleProperty;
-// Access/set a replicant (also see ./util/replicants).
-exampleReplicant.value = { exampleProperty: `exampleString_Changed_${Date.now()}` };
-// Accessing normal types.
-// eslint-disable-next-line @typescript-eslint/no-unused-vars
-const exampleType: ExampleType = { exampleProperty: 'exampleString' };
diff --git a/src/extension/index.ts b/src/extension/index.ts
index f56c18c..3e75365 100644
--- a/src/extension/index.ts
+++ b/src/extension/index.ts
@@ -1,14 +1,13 @@
 import type { NodeCGServerAPI } from '../types/index.js';
-import { set } from './util/nodecg.js';
+import { setNodecgContext } from '../nodecg/extension/context.js';
 
 export default async (nodecg: NodeCGServerAPI) => {
   /**
    * Because of how top-level `import`s work, it helps to use `import`s here
    * to force things to be loaded *after* the NodeCG context is set.
    */
-  set(nodecg); // set nodecg "context" before anything else
-  await import('./util/replicants.js'); // make sure replicants are set up
-  await import('./example.js');
+  setNodecgContext(nodecg); // set nodecg "context" before anything else
+  await import('./modules/replicants.js'); // make sure replicants are set up
   await import('./startgg.js');
   await import('./challonge.js');
   await import('./pack-manager.js');
diff --git a/src/extension/modules/replicants.ts b/src/extension/modules/replicants.ts
new file mode 100644
index 0000000..e2876af
--- /dev/null
+++ b/src/extension/modules/replicants.ts
@@ -0,0 +1,9 @@
+import {
+  commentaryReplicant,
+  playersReplicant,
+  scoreboardReplicant,
+} from '../../nodecg/extension/replicants.js';
+
+playersReplicant();
+scoreboardReplicant();
+commentaryReplicant();
diff --git a/src/extension/pack-manager.ts b/src/extension/pack-manager.ts
index 1171e10..a19fae6 100644
--- a/src/extension/pack-manager.ts
+++ b/src/extension/pack-manager.ts
@@ -12,7 +12,15 @@ import * as fs from 'fs';
 import type { IncomingMessage, ServerResponse } from 'http';
 import * as path from 'path';
 import { fileURLToPath } from 'url';
-import { nodecg } from './util/nodecg.js';
+import { nodecg } from '../nodecg/extension/context.js';
+import { listenForMessage, reply, type Acknowledgement } from '../nodecg/extension/messages.js';
+import { createPackExtensionReplicants } from '../nodecg/extension/packReplicants.js';
+import { messageNames } from '../nodecg/messageNames.js';
+import type {
+  PackDownloadState,
+  PackManifest,
+  PackRegistry,
+} from '../shared/domain/packs/types.js';
 
 // ── Configuración de Gitea ────────────────────────────────────────────────────
 // Edita estas constantes para apuntar a tu instancia.
@@ -33,54 +41,9 @@ const getCharacterImageRepoUrl  = (id: string, slug: string, ext: string) =>
 
 // ── Tipos locales ─────────────────────────────────────────────────────────────
 
-interface PackCharacter {
-  name: string;
-  slug: string;
-  dlc?: boolean;
-  sizeBytes: number;
-}
-
-interface PackManifest {
-  id: string;
-  name: string;
-  version: string;
-  palette: { start: string; end: string };
-  defaultPair?: { left: string; right: string };
-  characters: PackCharacter[];
-}
-
-interface PackRegistry {
-  schemaVersion: number;
-  updatedAt: string;
-  packs: Array<{
-    id: string;
-    name: string;
-    version: string;
-    totalSizeBytes: number;
-    logoPath: string;
-    characterCount: number;
-    palette: { start: string; end: string };
-    bundled: boolean;
-  }>;
-}
-
-interface PackDownloadState {
-  status: 'idle' | 'fetching-manifest' | 'downloading' | 'done' | 'error';
-  progress: number;
-  error?: string;
-}
-
 // Replicamos la forma exacta del tipo Acknowledgement de NodeCG sin necesidad
 // de importar @nodecg/types. HandledAcknowledgement NO es callable (es un objeto),
 // UnhandledAcknowledgement SÍ lo es. El helper reply() comprueba cuál es antes de llamar.
-type HandledAcknowledgement   = { handled: true };
-type UnhandledAcknowledgement = ((error?: Error | null, ...args: unknown[]) => void) & { handled: false };
-type Acknowledgement          = HandledAcknowledgement | UnhandledAcknowledgement;
-
-const reply = (ack: Acknowledgement | undefined, err: Error | null, result?: unknown): void => {
-  if (ack && !ack.handled) ack(err ?? undefined, result);
-};
-
 // ── Constantes ────────────────────────────────────────────────────────────────
 
 const IMAGE_EXTENSIONS = ['png', 'webp', 'jpg', 'jpeg', 'avif'] as const;
@@ -93,26 +56,12 @@ const bundleDir = fileURLToPath(new URL('../', import.meta.url));
 
 // ── Replicants ────────────────────────────────────────────────────────────────
 
-const installedPacksRep = nodecg.Replicant<string[]>('installedPacks', {
-  defaultValue: [],
-  persistent: true,
-});
-
-const packRegistryRep = nodecg.Replicant<PackRegistry | null>('packRegistry', {
-  defaultValue: null,
-  persistent: true,
-});
-
-const downloadStatesRep = nodecg.Replicant<Record<string, PackDownloadState>>('downloadStates', {
-  defaultValue: {},
-  persistent: false,
-});
-
-/** Packs instalados para los que hay una versión más nueva en el registro. */
-const availableUpdatesRep = nodecg.Replicant<Record<string, { installedVersion: string; latestVersion: string }>>('availableUpdates', {
-  defaultValue: {},
-  persistent: false,
-});
+const {
+  installedPacksRep,
+  packRegistryRep,
+  downloadStatesRep,
+  availableUpdatesRep,
+} = createPackExtensionReplicants();
 
 // ── Filesystem ────────────────────────────────────────────────────────────────
 
@@ -249,7 +198,7 @@ checkForUpdates();
 
 // ── Mensaje: fetchPackRegistry ────────────────────────────────────────────────
 
-nodecg.listenFor('fetchPackRegistry', async (_data: unknown, ack: Acknowledgement | undefined) => {
+listenForMessage(messageNames.packs.fetchRegistry, async (_data: unknown, ack: Acknowledgement | undefined) => {
   try {
     const response = await fetch(REGISTRY_URL);
     if (!response.ok) throw new Error(`HTTP ${response.status}`);
@@ -266,7 +215,7 @@ nodecg.listenFor('fetchPackRegistry', async (_data: unknown, ack: Acknowledgemen
 
 // ── Mensaje: downloadPack ─────────────────────────────────────────────────────
 
-nodecg.listenFor('downloadPack', async (packId: unknown, ack: Acknowledgement | undefined) => {
+listenForMessage(messageNames.packs.download, async (packId: unknown, ack: Acknowledgement | undefined) => {
   if (typeof packId !== 'string' || !packId) {
     return reply(ack, new Error('downloadPack requiere un packId no vacío.'));
   }
@@ -327,7 +276,7 @@ nodecg.listenFor('downloadPack', async (packId: unknown, ack: Acknowledgement |
 
 // ── Mensaje: uninstallPack ────────────────────────────────────────────────────
 
-nodecg.listenFor('uninstallPack', (packId: unknown, ack: Acknowledgement | undefined) => {
+listenForMessage(messageNames.packs.uninstall, (packId: unknown, ack: Acknowledgement | undefined) => {
   if (typeof packId !== 'string' || !packId) {
     return reply(ack, new Error('uninstallPack requiere un packId no vacío.'));
   }
@@ -352,7 +301,7 @@ nodecg.listenFor('uninstallPack', (packId: unknown, ack: Acknowledgement | undef
 // Dashboard → Extension: "Actualiza el pack <packId> a la última versión."
 // Borra las imágenes antiguas y descarga las nuevas desde Gitea.
 
-nodecg.listenFor('updatePack', async (packId: unknown, ack: Acknowledgement | undefined) => {
+listenForMessage(messageNames.packs.update, async (packId: unknown, ack: Acknowledgement | undefined) => {
   if (typeof packId !== 'string' || !packId) {
     return reply(ack, new Error('updatePack requiere un packId no vacío.'));
   }
@@ -426,7 +375,7 @@ nodecg.listenFor('updatePack', async (packId: unknown, ack: Acknowledgement | un
 
 // ── Mensaje: readLocalManifest ────────────────────────────────────────────────
 
-nodecg.listenFor('readLocalManifest', (packId: unknown, ack: Acknowledgement | undefined) => {
+listenForMessage(messageNames.packs.readLocalManifest, (packId: unknown, ack: Acknowledgement | undefined) => {
   if (typeof packId !== 'string' || !packId) {
     return reply(ack, new Error('readLocalManifest requiere un packId no vacío.'));
   }
diff --git a/src/extension/startgg.ts b/src/extension/startgg.ts
index 1aec737..59d7534 100644
--- a/src/extension/startgg.ts
+++ b/src/extension/startgg.ts
@@ -1,5 +1,7 @@
 import { getData, type CountryRecord } from 'country-list';
-import { nodecg } from './util/nodecg.js';
+import { nodecg } from '../nodecg/extension/context.js';
+import { listenForMessage } from '../nodecg/extension/messages.js';
+import { messageNames } from '../nodecg/messageNames.js';
 import { createOAuthServer, type OAuthConfig } from './util/oauth-server.js';
 
 // ─── Constantes ────────────────────────────────────────────────────────────────
@@ -188,6 +190,7 @@ const exchangeOAuthCodeForToken = async (
   redirectUri: string,
   _config: OAuthConfig,
 ): Promise<string> => {
+  void _config;
   const mode = getOAuthMode();
   if (mode.type === 'dev') {
     return exchangeCodeDirectly(code, redirectUri, mode.clientId, mode.clientSecret);
@@ -274,7 +277,7 @@ const sendAck = (ack: unknown, error: string | null, response?: unknown) => {
 
 // ─── Listeners de NodeCG ───────────────────────────────────────────────────────
 
-nodecg.listenFor('startgg:createOAuthSession', async (_payload: unknown, ack) => {
+listenForMessage(messageNames.integrations.startgg.createOAuthSession, async (_payload: unknown, ack) => {
   const mode = getOAuthMode();
   let serverConfig: OAuthConfig;
 
@@ -312,7 +315,7 @@ nodecg.listenFor('startgg:createOAuthSession', async (_payload: unknown, ack) =>
   sendAck(ack, null, oauthServer.createSession(serverConfig));
 });
 
-nodecg.listenFor('startgg:getOAuthSessionStatus', (payload: unknown, ack) => {
+listenForMessage(messageNames.integrations.startgg.getOAuthSessionStatus, (payload: unknown, ack) => {
   const sessionId = getStringProp(payload, 'sessionId');
   if (!sessionId) {
     sendAck(ack, 'Missing OAuth session id');
@@ -328,7 +331,7 @@ nodecg.listenFor('startgg:getOAuthSessionStatus', (payload: unknown, ack) => {
   sendAck(ack, null, status);
 });
 
-nodecg.listenFor('startgg:fetchRecentTournaments', async (payload: unknown, ack) => {
+listenForMessage(messageNames.integrations.startgg.fetchRecentTournaments, async (payload: unknown, ack) => {
   const token = getStringProp(payload, 'token');
   if (!token) {
     sendAck(ack, 'Missing start.gg API token');
@@ -368,7 +371,7 @@ nodecg.listenFor('startgg:fetchRecentTournaments', async (payload: unknown, ack)
   }
 });
 
-nodecg.listenFor('startgg:fetchTournamentPlayers', async (payload: unknown, ack) => {
+listenForMessage(messageNames.integrations.startgg.fetchTournamentPlayers, async (payload: unknown, ack) => {
   const token = getStringProp(payload, 'token');
   const slug = getStringProp(payload, 'slug');
 
diff --git a/src/extension/util/nodecg.ts b/src/extension/util/nodecg.ts
deleted file mode 100644
index e2e15ea..0000000
--- a/src/extension/util/nodecg.ts
+++ /dev/null
@@ -1,7 +0,0 @@
-import type { NodeCGServerAPI } from '../../types/index.js';
-
-export let nodecg!: NodeCGServerAPI;
-
-export function set(ctx: NodeCGServerAPI) {
-  nodecg = ctx;
-}
diff --git a/src/extension/util/replicants.ts b/src/extension/util/replicants.ts
deleted file mode 100644
index bd943c4..0000000
--- a/src/extension/util/replicants.ts
+++ /dev/null
@@ -1,31 +0,0 @@
-import type NodeCG from 'nodecg/types';
-import type { Schemas } from '../../types/index.js';
-import { nodecg } from './nodecg.js';
-
-// Wrapper for replicants that have a default (based on schema).
-function hasDefault<T>(name: string) {
-  return nodecg.Replicant<T>(name) as unknown as NodeCG.default.ServerReplicantWithSchemaDefault<T>;
-}
-// Wrapper for replicants that don't have a default (based on schema).
-// eslint-disable-next-line @typescript-eslint/no-unused-vars
-function hasNoDefault<T>(name: string) {
-  return nodecg.Replicant<T>(name) as NodeCG.default.ServerReplicant<T>;
-}
-
-/**
- * This is where you can declare all of your replicants to import easily into other files,
- * and to make sure they have any correct settings on startup.
- */
-export const exampleReplicant = hasDefault<Schemas.ExampleReplicant>('exampleReplicant');
-export const playersReplicant = hasDefault<Schemas.Players>('players');
-export const scoreboardReplicant = hasDefault<Schemas.Scoreboard>('scoreboard');
-
-export const commentaryReplicant = nodecg.Replicant<Schemas.Commentary>('commentary', {
-  defaultValue: {
-    leftCommentator: '',
-    leftCommentatorTwitter: '',
-    rightCommentator: '',
-    rightCommentatorTwitter: '',
-  },
-  persistent: false,
-});
diff --git a/src/graphics/commentary/main.vue b/src/graphics/commentary/main.vue
index 03f7068..e184942 100644
--- a/src/graphics/commentary/main.vue
+++ b/src/graphics/commentary/main.vue
@@ -1,7 +1,7 @@
 <script setup lang="ts">
 import { useHead } from '@unhead/vue';
 import { computed } from 'vue';
-import { commentaryReplicant } from '../../browser_shared/replicants';
+import { commentaryReplicant } from '../../nodecg/browser/replicants';
 import type { Schemas } from '../../types';
 
 useHead({ title: 'Commentary' });
diff --git a/src/graphics/scoreboard-2xko/main.vue b/src/graphics/scoreboard-2xko/main.vue
index 804e078..79be170 100644
--- a/src/graphics/scoreboard-2xko/main.vue
+++ b/src/graphics/scoreboard-2xko/main.vue
@@ -1,8 +1,8 @@
 <script setup lang="ts">
 import { useHead } from '@unhead/vue';
 import { computed, nextTick, onBeforeUnmount, ref, watch } from 'vue';
-import { graphicsSettingsReplicant, playersReplicant, scoreboardReplicant } from '../../browser_shared/replicants';
-import { resolveCountryCode } from '../../shared/countries';
+import { graphicsSettingsReplicant, playersReplicant, scoreboardReplicant } from '../../nodecg/browser/replicants';
+import { resolveCountryCode } from '../../shared/domain/players/countries';
 import { getCharactersByGame } from '../../shared/fighting-characters';
 import type { Schemas } from '../../types';
 
diff --git a/src/graphics/scoreboard/main.vue b/src/graphics/scoreboard/main.vue
index bffbc52..e1ba7ff 100644
--- a/src/graphics/scoreboard/main.vue
+++ b/src/graphics/scoreboard/main.vue
@@ -1,8 +1,8 @@
 <script setup lang="ts">
 import { useHead } from '@unhead/vue';
 import { computed, nextTick, onBeforeUnmount, onMounted, ref, watch } from 'vue';
-import { graphicsSettingsReplicant, playersReplicant, scoreboardReplicant } from '../../browser_shared/replicants';
-import { resolveCountryCode } from '../../shared/countries';
+import { graphicsSettingsReplicant, playersReplicant, scoreboardReplicant } from '../../nodecg/browser/replicants';
+import { resolveCountryCode } from '../../shared/domain/players/countries';
 import type { Schemas } from '../../types';
 
 useHead({ title: 'Scoreboard' });
diff --git a/src/nodecg/browser/messages.ts b/src/nodecg/browser/messages.ts
new file mode 100644
index 0000000..c1af809
--- /dev/null
+++ b/src/nodecg/browser/messages.ts
@@ -0,0 +1,13 @@
+export const sendNodecgMessage = <T>(messageName: string, payload: unknown): Promise<T> =>
+  new Promise((resolve, reject) => {
+    nodecg.sendMessage(messageName, payload, (error: unknown, response: unknown) => {
+      if (error) {
+        reject(error instanceof Error ? error : new Error(String(error)));
+        return;
+      }
+      resolve(response as T);
+    });
+  });
+
+export const sendNodecgCommand = (messageName: string, payload?: unknown): Promise<void> =>
+  sendNodecgMessage<void>(messageName, payload);
diff --git a/src/nodecg/browser/packReplicants.ts b/src/nodecg/browser/packReplicants.ts
new file mode 100644
index 0000000..fd2b3ce
--- /dev/null
+++ b/src/nodecg/browser/packReplicants.ts
@@ -0,0 +1,52 @@
+import { BUNDLE_NAME } from '../../shared/domain/packs/config';
+import type {
+  PackDownloadState,
+  PackRegistry,
+  PackUpdateInfo,
+} from '../../shared/domain/packs/types';
+import { replicantNames } from '../replicantNames';
+
+interface BrowserReplicant<T> {
+  value: T;
+  on(event: 'change', handler: (newVal: T, oldVal?: T) => void): void;
+  off(event: string, handler: (...args: unknown[]) => void): void;
+}
+
+export interface PackBrowserReplicants {
+  registryRep: BrowserReplicant<PackRegistry | null>;
+  installedRep: BrowserReplicant<string[]>;
+  statesRep: BrowserReplicant<Record<string, PackDownloadState>>;
+  updatesRep: BrowserReplicant<Record<string, PackUpdateInfo>>;
+  waitUntilReady: () => Promise<void>;
+}
+
+export const createPackBrowserReplicants = (): PackBrowserReplicants => {
+  const registryRep = NodeCG.Replicant<PackRegistry | null>(
+    replicantNames.packRegistry,
+    BUNDLE_NAME,
+    { defaultValue: null },
+  );
+  const installedRep = NodeCG.Replicant<string[]>(
+    replicantNames.installedPacks,
+    BUNDLE_NAME,
+    { defaultValue: [] },
+  );
+  const statesRep = NodeCG.Replicant<Record<string, PackDownloadState>>(
+    replicantNames.downloadStates,
+    BUNDLE_NAME,
+    { defaultValue: {} },
+  );
+  const updatesRep = NodeCG.Replicant<Record<string, PackUpdateInfo>>(
+    replicantNames.availableUpdates,
+    BUNDLE_NAME,
+    { defaultValue: {} },
+  );
+
+  return {
+    registryRep,
+    installedRep,
+    statesRep,
+    updatesRep,
+    waitUntilReady: () => NodeCG.waitForReplicants(registryRep, installedRep, statesRep, updatesRep),
+  };
+};
diff --git a/src/nodecg/browser/replicants.ts b/src/nodecg/browser/replicants.ts
new file mode 100644
index 0000000..9084253
--- /dev/null
+++ b/src/nodecg/browser/replicants.ts
@@ -0,0 +1,24 @@
+import { useReplicant } from 'nodecg-vue-composable';
+import { BUNDLE_NAME } from '../../shared/domain/packs/config';
+import type { Schemas } from '../../types';
+import { replicantNames } from '../replicantNames';
+
+export const playersReplicant = useReplicant<Schemas.Players>(
+  replicantNames.players,
+  BUNDLE_NAME,
+);
+
+export const scoreboardReplicant = useReplicant<Schemas.Scoreboard>(
+  replicantNames.scoreboard,
+  BUNDLE_NAME,
+);
+
+export const graphicsSettingsReplicant = useReplicant<Schemas.GraphicsSettings>(
+  replicantNames.graphicsSettings,
+  BUNDLE_NAME,
+);
+
+export const commentaryReplicant = useReplicant<Schemas.Commentary>(
+  replicantNames.commentary,
+  BUNDLE_NAME,
+);
diff --git a/src/nodecg/extension/context.ts b/src/nodecg/extension/context.ts
new file mode 100644
index 0000000..9121274
--- /dev/null
+++ b/src/nodecg/extension/context.ts
@@ -0,0 +1,26 @@
+import type { NodeCGServerAPI } from '../../types/index.js';
+
+let currentNodecg: NodeCGServerAPI | null = null;
+
+export function setNodecgContext(ctx: NodeCGServerAPI): void {
+  currentNodecg = ctx;
+}
+
+export function getNodecgContext(): NodeCGServerAPI {
+  if (!currentNodecg) {
+    throw new Error('NodeCG context has not been initialized.');
+  }
+  return currentNodecg;
+}
+
+export const nodecgContext = {
+  get nodecg(): NodeCGServerAPI {
+    return getNodecgContext();
+  },
+};
+
+export const nodecg = new Proxy({} as NodeCGServerAPI, {
+  get(_target, prop: string | symbol) {
+    return getNodecgContext()[prop as keyof NodeCGServerAPI];
+  },
+});
diff --git a/src/nodecg/extension/messages.ts b/src/nodecg/extension/messages.ts
new file mode 100644
index 0000000..96a5f2d
--- /dev/null
+++ b/src/nodecg/extension/messages.ts
@@ -0,0 +1,26 @@
+import { getNodecgContext } from './context.js';
+
+type HandledAcknowledgement = { handled: true };
+type UnhandledAcknowledgement = ((error?: Error | null, ...args: unknown[]) => void) & {
+  handled: false;
+};
+
+export type Acknowledgement = HandledAcknowledgement | UnhandledAcknowledgement;
+export type NodecgMessageHandler = (
+  payload: unknown,
+  ack?: Acknowledgement,
+) => void | Promise<void>;
+
+export const reply = (
+  ack: Acknowledgement | undefined,
+  error: Error | null,
+  result?: unknown,
+): void => {
+  if (ack && !ack.handled) {
+    ack(error ?? undefined, result);
+  }
+};
+
+export const listenForMessage = (messageName: string, handler: NodecgMessageHandler): void => {
+  getNodecgContext().listenFor(messageName, handler);
+};
diff --git a/src/nodecg/extension/packReplicants.ts b/src/nodecg/extension/packReplicants.ts
new file mode 100644
index 0000000..e97ea2a
--- /dev/null
+++ b/src/nodecg/extension/packReplicants.ts
@@ -0,0 +1,36 @@
+import type {
+  PackDownloadState,
+  PackRegistry,
+  PackUpdateInfo,
+} from '../../shared/domain/packs/types.js';
+import { replicantNames } from '../replicantNames.js';
+import { getNodecgContext } from './context.js';
+
+export const createPackExtensionReplicants = () => {
+  const nodecg = getNodecgContext();
+
+  return {
+    installedPacksRep: nodecg.Replicant<string[]>(replicantNames.installedPacks, {
+      defaultValue: [],
+      persistent: true,
+    }),
+    packRegistryRep: nodecg.Replicant<PackRegistry | null>(replicantNames.packRegistry, {
+      defaultValue: null,
+      persistent: true,
+    }),
+    downloadStatesRep: nodecg.Replicant<Record<string, PackDownloadState>>(
+      replicantNames.downloadStates,
+      {
+        defaultValue: {},
+        persistent: false,
+      },
+    ),
+    availableUpdatesRep: nodecg.Replicant<Record<string, PackUpdateInfo>>(
+      replicantNames.availableUpdates,
+      {
+        defaultValue: {},
+        persistent: false,
+      },
+    ),
+  };
+};
diff --git a/src/nodecg/extension/replicants.ts b/src/nodecg/extension/replicants.ts
new file mode 100644
index 0000000..8f773f2
--- /dev/null
+++ b/src/nodecg/extension/replicants.ts
@@ -0,0 +1,32 @@
+import type NodeCG from 'nodecg/types';
+import type { Schemas } from '../../types/index.js';
+import { replicantNames } from '../replicantNames.js';
+import { getNodecgContext } from './context.js';
+
+type ServerReplicantWithDefault<T> = NodeCG.default.ServerReplicantWithSchemaDefault<T>;
+type ServerReplicant<T> = NodeCG.default.ServerReplicant<T>;
+
+export function getReplicantWithDefault<T>(name: string): ServerReplicantWithDefault<T> {
+  return getNodecgContext().Replicant<T>(name) as unknown as ServerReplicantWithDefault<T>;
+}
+
+export function getReplicant<T>(name: string): ServerReplicant<T> {
+  return getNodecgContext().Replicant<T>(name) as ServerReplicant<T>;
+}
+
+export const playersReplicant = (): ServerReplicantWithDefault<Schemas.Players> =>
+  getReplicantWithDefault<Schemas.Players>(replicantNames.players);
+
+export const scoreboardReplicant = (): ServerReplicantWithDefault<Schemas.Scoreboard> =>
+  getReplicantWithDefault<Schemas.Scoreboard>(replicantNames.scoreboard);
+
+export const commentaryReplicant = (): ServerReplicant<Schemas.Commentary> =>
+  getNodecgContext().Replicant<Schemas.Commentary>(replicantNames.commentary, {
+    defaultValue: {
+      leftCommentator: '',
+      leftCommentatorTwitter: '',
+      rightCommentator: '',
+      rightCommentatorTwitter: '',
+    },
+    persistent: false,
+  });
diff --git a/src/nodecg/messageNames.ts b/src/nodecg/messageNames.ts
new file mode 100644
index 0000000..bba75ce
--- /dev/null
+++ b/src/nodecg/messageNames.ts
@@ -0,0 +1,28 @@
+export const messageNames = {
+  packs: {
+    fetchRegistry: 'fetchPackRegistry',
+    download: 'downloadPack',
+    uninstall: 'uninstallPack',
+    update: 'updatePack',
+    readLocalManifest: 'readLocalManifest',
+  },
+  integrations: {
+    startgg: {
+      createOAuthSession: 'startgg:createOAuthSession',
+      getOAuthSessionStatus: 'startgg:getOAuthSessionStatus',
+      fetchRecentTournaments: 'startgg:fetchRecentTournaments',
+      fetchTournamentPlayers: 'startgg:fetchTournamentPlayers',
+    },
+    challonge: {
+      createOAuthSession: 'challonge:createOAuthSession',
+      getOAuthSessionStatus: 'challonge:getOAuthSessionStatus',
+      fetchRecentTournaments: 'challonge:fetchRecentTournaments',
+      fetchTournamentPlayers: 'challonge:fetchTournamentPlayers',
+    },
+  },
+} as const;
+
+export type MessageName =
+  | typeof messageNames.packs[keyof typeof messageNames.packs]
+  | typeof messageNames.integrations.startgg[keyof typeof messageNames.integrations.startgg]
+  | typeof messageNames.integrations.challonge[keyof typeof messageNames.integrations.challonge];
diff --git a/src/nodecg/replicantNames.ts b/src/nodecg/replicantNames.ts
new file mode 100644
index 0000000..52b3936
--- /dev/null
+++ b/src/nodecg/replicantNames.ts
@@ -0,0 +1,12 @@
+export const replicantNames = {
+  scoreboard: 'scoreboard',
+  players: 'players',
+  commentary: 'commentary',
+  graphicsSettings: 'graphicsSettings',
+  installedPacks: 'installedPacks',
+  packRegistry: 'packRegistry',
+  downloadStates: 'downloadStates',
+  availableUpdates: 'availableUpdates',
+} as const;
+
+export type ReplicantName = typeof replicantNames[keyof typeof replicantNames];
diff --git a/src/shared/domain/packs/config.ts b/src/shared/domain/packs/config.ts
new file mode 100644
index 0000000..4ab1ba4
--- /dev/null
+++ b/src/shared/domain/packs/config.ts
@@ -0,0 +1,25 @@
+export const GITEA_BASE_URL = 'http://10.0.0.10:3002';
+export const GITEA_OWNER = 'Pandipipas';
+export const GITEA_REPO = 'fighting-game-packs';
+export const GITEA_BRANCH = 'main';
+export const BUNDLE_NAME = 'scoreko-dev';
+
+export const getGiteaRawUrl = (repoPath: string): string =>
+  `${GITEA_BASE_URL}/${GITEA_OWNER}/${GITEA_REPO}/raw/branch/${GITEA_BRANCH}/${repoPath}`;
+
+export const REGISTRY_URL = getGiteaRawUrl('registry.json');
+
+export const getManifestUrl = (packId: string): string =>
+  getGiteaRawUrl(`${packId}/manifest.json`);
+
+export const getPackLogoUrl = (packId: string): string =>
+  getGiteaRawUrl(`${packId}/logo.png`);
+
+export const getCharacterImageRepoUrl = (packId: string, slug: string, ext: string): string =>
+  getGiteaRawUrl(`${packId}/characters/${slug}.${ext}`);
+
+export const getInstalledCharacterImageUrl = (
+  packId: string,
+  slug: string,
+  ext = 'png',
+): string => `/packs/${packId}/characters/${slug}.${ext}`;
diff --git a/src/shared/domain/packs/index.ts b/src/shared/domain/packs/index.ts
new file mode 100644
index 0000000..2acd167
--- /dev/null
+++ b/src/shared/domain/packs/index.ts
@@ -0,0 +1,2 @@
+export * from './config';
+export * from './types';
diff --git a/src/shared/domain/packs/types.ts b/src/shared/domain/packs/types.ts
new file mode 100644
index 0000000..79c527e
--- /dev/null
+++ b/src/shared/domain/packs/types.ts
@@ -0,0 +1,59 @@
+export interface PackCharacter {
+  name: string;
+  slug: string;
+  dlc?: boolean;
+  sizeBytes: number;
+}
+
+export interface PackPalette {
+  start: string;
+  end: string;
+}
+
+export interface PackRegistryEntry {
+  id: string;
+  name: string;
+  version: string;
+  totalSizeBytes: number;
+  logoPath: string;
+  characterCount: number;
+  palette: PackPalette;
+  bundled: boolean;
+}
+
+export interface PackManifest {
+  id: string;
+  name: string;
+  version: string;
+  palette: PackPalette;
+  defaultPair?: {
+    left: string;
+    right: string;
+  };
+  characters: PackCharacter[];
+}
+
+export interface PackRegistry {
+  schemaVersion: number;
+  updatedAt: string;
+  packs: PackRegistryEntry[];
+}
+
+export interface PackDownloadState {
+  status: 'idle' | 'fetching-manifest' | 'downloading' | 'done' | 'error';
+  progress: number;
+  error?: string;
+}
+
+export interface PackUpdateInfo {
+  installedVersion: string;
+  latestVersion: string;
+}
+
+export interface GameSelectOption {
+  label: string;
+  value: string;
+  available: boolean;
+  registryEntry: PackRegistryEntry;
+  updateInfo?: PackUpdateInfo;
+}
diff --git a/src/shared/countries.ts b/src/shared/domain/players/countries.ts
similarity index 92%
rename from src/shared/countries.ts
rename to src/shared/domain/players/countries.ts
index d8f9159..0e4cf2e 100644
--- a/src/shared/countries.ts
+++ b/src/shared/domain/players/countries.ts
@@ -41,7 +41,7 @@ const countryByName = new Map(
   baseCountries.map((country) => [country.name.toLowerCase(), country.code]),
 );
 
-export const resolveCountryCode = (value?: string) => {
+export const resolveCountryCode = (value?: string): string => {
   if (!value) {
     return '';
   }
@@ -57,7 +57,7 @@ export const resolveCountryCode = (value?: string) => {
   return byName ?? '';
 };
 
-export const getCountryLabel = (value?: string, locale = 'en') => {
+export const getCountryLabel = (value?: string, locale = 'en'): string => {
   if (!value) {
     return '';
   }
diff --git a/src/shared/fighting-characters.ts b/src/shared/fighting-characters.ts
index 10d72e8..56b5ecb 100644
--- a/src/shared/fighting-characters.ts
+++ b/src/shared/fighting-characters.ts
@@ -5,7 +5,7 @@
 // ─────────────────────────────────────────────────────────────────────────────
 
 import { ref } from 'vue';
-import type { PackManifest } from './pack-types';
+import type { PackManifest } from './domain/packs/types';
 
 export interface FightingCharacterOption {
   label: string;
diff --git a/src/shared/pack-config.js b/src/shared/pack-config.js
deleted file mode 100644
index 8f82432..0000000
--- a/src/shared/pack-config.js
+++ /dev/null
@@ -1,37 +0,0 @@
-// src/shared/pack-config.ts
-// ─────────────────────────────────────────────────────────────────────────────
-// Edit ONLY this file to point the pack system at your Gitea instance.
-// All other files import their Gitea/NodeCG constants from here.
-// ─────────────────────────────────────────────────────────────────────────────
-/** Base URL of your Gitea instance — no trailing slash. */
-export const GITEA_BASE_URL = 'http://10.0.0.10:3002';
-/** Gitea owner (user or organisation) that owns the packs repository. */
-export const GITEA_OWNER = 'Pandipipas';
-/** Name of the repository that contains all game packs. */
-export const GITEA_REPO = 'fighting-game-packs';
-/** Branch to pull assets from. */
-export const GITEA_BRANCH = 'main';
-/**
- * NodeCG bundle name.
- * Must match the "name" field in your package.json / nodecg config.
- */
-export const BUNDLE_NAME = 'scoreko-dev';
-// ── Derived URL helpers (do not edit below this line) ────────────────────────
-/** Returns the Gitea raw-file URL for any repo-relative path. */
-export const getGiteaRawUrl = (repoPath) => `${GITEA_BASE_URL}/${GITEA_OWNER}/${GITEA_REPO}/raw/branch/${GITEA_BRANCH}/${repoPath}`;
-/** URL of the master registry file that lists every available pack. */
-export const REGISTRY_URL = getGiteaRawUrl('registry.json');
-/** Returns the URL for a specific pack's manifest.json. */
-export const getManifestUrl = (packId) => getGiteaRawUrl(`${packId}/manifest.json`);
-/** Returns the URL for a pack's logo. */
-export const getPackLogoUrl = (packId) => getGiteaRawUrl(`${packId}/logo.png`);
-/**
- * Returns the URL for a specific character image stored in the Gitea repo.
- * Used during download; at runtime installed packs are served by NodeCG.
- */
-export const getCharacterImageRepoUrl = (packId, slug, ext) => getGiteaRawUrl(`${packId}/characters/${slug}.${ext}`);
-/**
- * Returns the runtime URL for a character image from an *installed* (downloaded) pack.
- * NodeCG serves everything under assets/ at /assets/<bundleName>/.
- */
-export const getInstalledCharacterImageUrl = (packId, slug, ext = 'png') => `/assets/${BUNDLE_NAME}/packs/${packId}/characters/${slug}.${ext}`;
diff --git a/src/shared/pack-config.ts b/src/shared/pack-config.ts
deleted file mode 100644
index 07c4dbb..0000000
--- a/src/shared/pack-config.ts
+++ /dev/null
@@ -1,54 +0,0 @@
-// src/shared/pack-config.ts
-// ─────────────────────────────────────────────────────────────────────────────
-// Edit ONLY this file to point the pack system at your Gitea instance.
-// All other files import their Gitea/NodeCG constants from here.
-// ─────────────────────────────────────────────────────────────────────────────
-
-/** Base URL of your Gitea instance — no trailing slash. */
-export const GITEA_BASE_URL = 'http://10.0.0.10:3002';
-
-/** Gitea owner (user or organisation) that owns the packs repository. */
-export const GITEA_OWNER = 'Pandipipas';
-
-/** Name of the repository that contains all game packs. */
-export const GITEA_REPO = 'fighting-game-packs';
-
-/** Branch to pull assets from. */
-export const GITEA_BRANCH = 'main';
-
-/**
- * NodeCG bundle name.
- * Must match the "name" field in your package.json / nodecg config.
- */
-export const BUNDLE_NAME = 'scoreko-dev';
-
-// ── Derived URL helpers (do not edit below this line) ────────────────────────
-
-/** Returns the Gitea raw-file URL for any repo-relative path. */
-export const getGiteaRawUrl = (repoPath: string): string =>
-  `${GITEA_BASE_URL}/${GITEA_OWNER}/${GITEA_REPO}/raw/branch/${GITEA_BRANCH}/${repoPath}`;
-
-/** URL of the master registry file that lists every available pack. */
-export const REGISTRY_URL = getGiteaRawUrl('registry.json');
-
-/** Returns the URL for a specific pack's manifest.json. */
-export const getManifestUrl = (packId: string): string =>
-  getGiteaRawUrl(`${packId}/manifest.json`);
-
-/** Returns the URL for a pack's logo. */
-export const getPackLogoUrl = (packId: string): string =>
-  getGiteaRawUrl(`${packId}/logo.png`);
-
-/**
- * Returns the URL for a specific character image stored in the Gitea repo.
- * Used during download; at runtime installed packs are served by NodeCG.
- */
-export const getCharacterImageRepoUrl = (packId: string, slug: string, ext: string): string =>
-  getGiteaRawUrl(`${packId}/characters/${slug}.${ext}`);
-
-/**
- * Returns the runtime URL for a character image from an *installed* (downloaded) pack.
- * NodeCG serves everything under assets/ at /assets/<bundleName>/.
- */
-export const getInstalledCharacterImageUrl = (packId: string, slug: string, ext = 'png'): string =>
-  `/packs/${packId}/characters/${slug}.${ext}`;
diff --git a/src/shared/pack-types.js b/src/shared/pack-types.js
deleted file mode 100644
index ba55a92..0000000
--- a/src/shared/pack-types.js
+++ /dev/null
@@ -1,6 +0,0 @@
-// src/shared/pack-types.ts
-// ─────────────────────────────────────────────────────────────────────────────
-// Shared between the NodeCG extension (Node.js) and the dashboard (browser).
-// Do NOT import anything that is browser-only or Node-only from this file.
-// ─────────────────────────────────────────────────────────────────────────────
-export {};
diff --git a/src/shared/pack-types.ts b/src/shared/pack-types.ts
deleted file mode 100644
index 92ea1e6..0000000
--- a/src/shared/pack-types.ts
+++ /dev/null
@@ -1,89 +0,0 @@
-// src/shared/pack-types.ts
-// ─────────────────────────────────────────────────────────────────────────────
-// Shared between the NodeCG extension (Node.js) and the dashboard (browser).
-// Do NOT import anything that is browser-only or Node-only from this file.
-// ─────────────────────────────────────────────────────────────────────────────
-
-/** A single character entry inside a pack manifest. */
-export interface PackCharacter {
-  /** Display name, e.g. "Chun-Li" */
-  name: string;
-  /** URL-safe slug that matches the image filename, e.g. "chun-li" */
-  slug: string;
-  /** True when the character is paid DLC (shown with the DLC badge in the UI). */
-  dlc?: boolean;
-  /** Approximate compressed size of the character image file in bytes. */
-  sizeBytes: number;
-}
-
-/**
- * Lightweight entry in the top-level registry.json.
- * Enough for the UI to render the game list and the download dialog preview
- * without having to fetch the full manifest.
- */
-export interface PackRegistryEntry {
-  /** Unique identifier — must match the folder name in the repo, e.g. "street-fighter-6". */
-  id: string;
-  /** Human-readable game title shown in the selector, e.g. "Street Fighter 6". */
-  name: string;
-  /** Semantic version of this pack, e.g. "1.0.0". Bump when adding/updating characters. */
-  version: string;
-  /** Total download size (sum of all character images + logo) in bytes. */
-  totalSizeBytes: number;
-  /** Repo-relative path to the game's logo image, e.g. "street-fighter-6/logo.png". */
-  logoPath: string;
-  /** Pre-computed character count so the dialog can show it without loading the manifest. */
-  characterCount: number;
-  /** Gradient used for placeholder images when a character has no artwork. */
-  palette: { start: string; end: string };
-  /**
-   * True when the pack ships inside the application bundle (bundled via Vite's
-   * import.meta.glob). Bundled packs are always "installed" and never show the
-   * download button, but they still appear in the registry so the app can detect
-   * updates (version mismatch between bundle and registry).
-   */
-  bundled: boolean;
-}
-
-/** Full pack data — lives at <packId>/manifest.json in the repo. */
-export interface PackManifest {
-  /** Must match PackRegistryEntry.id and the folder name. */
-  id: string;
-  /** Must match PackRegistryEntry.name. */
-  name: string;
-  version: string;
-  palette: { start: string; end: string };
-  /** Default characters pre-selected when this game is first chosen. */
-  defaultPair?: { left: string; right: string };
-  /** Full character roster, in the order they should appear in the selector. */
-  characters: PackCharacter[];
-}
-
-/** Top-level registry.json structure. */
-export interface PackRegistry {
-  schemaVersion: number;
-  updatedAt: string;
-  packs: PackRegistryEntry[];
-}
-
-/** Tracks the download lifecycle of a single pack. */
-export interface PackDownloadState {
-  status: 'idle' | 'fetching-manifest' | 'downloading' | 'done' | 'error';
-  /** Progress percentage 0–100. */
-  progress: number;
-  error?: string;
-}
-
-/** Shape of the option objects surfaced by usePackRegistry.allGameOptions. */
-export interface GameSelectOption {
-  /** Display label for the QSelect. */
-  label: string;
-  /** Value stored in the scoreboard (equals PackRegistryEntry.name for installed games). */
-  value: string;
-  /** Whether the pack can be used right now (bundled or already downloaded). */
-  available: boolean;
-  /** Mirrors PackRegistryEntry so the download dialog can be populated inline. */
-  registryEntry: PackRegistryEntry;
-  /** Present when there is a newer version of this pack available in the registry. */
-  updateInfo?: { installedVersion: string; latestVersion: string };
-}
\ No newline at end of file
diff --git a/src/types/ExampleType.d.ts b/src/types/ExampleType.d.ts
deleted file mode 100644
index cfa25cb..0000000
--- a/src/types/ExampleType.d.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-export interface ExampleType {
-  exampleProperty: string;
-}
diff --git a/src/types/index.d.ts b/src/types/index.d.ts
index 9a14c27..3311365 100644
--- a/src/types/index.d.ts
+++ b/src/types/index.d.ts
@@ -2,5 +2,4 @@ import type NodeCG from 'nodecg/types';
 import type { Configschema } from './schemas.d.ts';
 
 export type NodeCGServerAPI = NodeCG.default.ServerAPI<Configschema>;
-export type { ExampleType } from './ExampleType.d.ts';
 export type * as Schemas from './schemas.d.ts';
diff --git a/src/types/schemas.d.ts b/src/types/schemas.d.ts
index 6d136ce..ad1f1fd 100644
--- a/src/types/schemas.d.ts
+++ b/src/types/schemas.d.ts
@@ -6,7 +6,10 @@
 
 export type { Commentary } from './schemas/commentary.d.ts';
 export type { Configschema } from './schemas/configschema.d.ts';
-export type { ExampleReplicant } from './schemas/exampleReplicant.d.ts';
 export type { GraphicsSettings } from './schemas/graphicsSettings.d.ts';
 export type { Players } from './schemas/players.d.ts';
 export type { Scoreboard } from './schemas/scoreboard.d.ts';
+export type { InstalledPacks } from './schemas/installedPacks.d.ts';
+export type { PackRegistry } from './schemas/packRegistry.d.ts';
+export type { DownloadStates } from './schemas/downloadStates.d.ts';
+export type { AvailableUpdates } from './schemas/availableUpdates.d.ts';
diff --git a/src/types/schemas/availableUpdates.d.ts b/src/types/schemas/availableUpdates.d.ts
new file mode 100644
index 0000000..900cbb9
--- /dev/null
+++ b/src/types/schemas/availableUpdates.d.ts
@@ -0,0 +1,14 @@
+/* prettier-ignore */
+/* eslint-disable */
+/**
+ * This file was automatically generated by json-schema-to-typescript.
+ * DO NOT MODIFY IT BY HAND. Instead, modify the source JSONSchema file,
+ * and run json-schema-to-typescript to regenerate this file.
+ */
+
+export interface AvailableUpdates {
+	[k: string]: {
+		installedVersion: string;
+		latestVersion: string;
+	};
+}
diff --git a/src/types/schemas/configschema.d.ts b/src/types/schemas/configschema.d.ts
index eb4b9ad..063e767 100644
--- a/src/types/schemas/configschema.d.ts
+++ b/src/types/schemas/configschema.d.ts
@@ -7,7 +7,10 @@
  */
 
 export interface Configschema {
-	exampleProperty: string;
+	/**
+	 * Sobreescribe la URL base del proxy OAuth.
+	 */
+	oauthProxyUrl?: string;
 	/**
 	 * Client ID de tu OAuth app de start.gg
 	 */
diff --git a/src/types/schemas/downloadStates.d.ts b/src/types/schemas/downloadStates.d.ts
new file mode 100644
index 0000000..b009ef8
--- /dev/null
+++ b/src/types/schemas/downloadStates.d.ts
@@ -0,0 +1,15 @@
+/* prettier-ignore */
+/* eslint-disable */
+/**
+ * This file was automatically generated by json-schema-to-typescript.
+ * DO NOT MODIFY IT BY HAND. Instead, modify the source JSONSchema file,
+ * and run json-schema-to-typescript to regenerate this file.
+ */
+
+export interface DownloadStates {
+	[k: string]: {
+		status: 'idle' | 'fetching-manifest' | 'downloading' | 'done' | 'error';
+		progress: number;
+		error?: string;
+	};
+}
diff --git a/src/types/schemas/exampleReplicant.d.ts b/src/types/schemas/installedPacks.d.ts
similarity index 80%
rename from src/types/schemas/exampleReplicant.d.ts
rename to src/types/schemas/installedPacks.d.ts
index 3441468..dcf9c0e 100644
--- a/src/types/schemas/exampleReplicant.d.ts
+++ b/src/types/schemas/installedPacks.d.ts
@@ -6,6 +6,4 @@
  * and run json-schema-to-typescript to regenerate this file.
  */
 
-export interface ExampleReplicant {
-	exampleProperty: string;
-}
+export type InstalledPacks = string[];
diff --git a/src/types/schemas/packRegistry.d.ts b/src/types/schemas/packRegistry.d.ts
new file mode 100644
index 0000000..3701bc3
--- /dev/null
+++ b/src/types/schemas/packRegistry.d.ts
@@ -0,0 +1,25 @@
+/* prettier-ignore */
+/* eslint-disable */
+/**
+ * This file was automatically generated by json-schema-to-typescript.
+ * DO NOT MODIFY IT BY HAND. Instead, modify the source JSONSchema file,
+ * and run json-schema-to-typescript to regenerate this file.
+ */
+
+export type PackRegistry = {
+	schemaVersion: number;
+	updatedAt: string;
+	packs: {
+		id: string;
+		name: string;
+		version: string;
+		totalSizeBytes: number;
+		logoPath: string;
+		characterCount: number;
+		palette: {
+			start: string;
+			end: string;
+		};
+		bundled: boolean;
+	}[];
+} | null;
diff --git a/tsconfig.browser.json b/tsconfig.browser.json
index a2546f9..3234c82 100644
--- a/tsconfig.browser.json
+++ b/tsconfig.browser.json
@@ -15,12 +15,13 @@
     "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.browser.tsbuildinfo",
   },
   "include": [
-    "./src/browser_shared/**/*.ts",
-    "./src/browser_shared/**/*.vue",
     "./src/dashboard/**/*.ts",
     "./src/dashboard/**/*.vue",
     "./src/graphics/**/*.ts",
     "./src/graphics/**/*.vue",
+    "./src/nodecg/browser/**/*.ts",
+    "./src/nodecg/*.ts",
+    "./src/shared/domain/**/*.ts",
     "./src/types/**/*.d.ts"
   ]
 }
diff --git a/tsconfig.extension.json b/tsconfig.extension.json
index b0557f4..2441d4b 100644
--- a/tsconfig.extension.json
+++ b/tsconfig.extension.json
@@ -7,15 +7,17 @@
       "./node_modules/@types"
     ],
     "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.extension.tsbuildinfo",
-    "rootDir": "./src/extension",
-    "outDir": "./extension",
+    "rootDir": "./src",
+    "outDir": ".",
     "verbatimModuleSyntax": true,
   },
   "include": [
     "./src/extension/**/*.ts",
+    "./src/nodecg/**/*.ts",
     "./src/types/**/*.d.ts"
   ],
   "exclude": [
+    "./src/nodecg/browser/**/*.ts",
     "./src/types/augment-window.d.ts"
   ]
 }