diff --git a/docs/refactor/PHASE_2_SUMMARY.md b/docs/refactor/PHASE_2_SUMMARY.md
new file mode 100644
index 0000000..08c82f0
--- /dev/null
+++ b/docs/refactor/PHASE_2_SUMMARY.md
@@ -0,0 +1,85 @@
+# Phase 2 Summary
+
+## Scope
+
+Executed the state and replicants phase only.
+
+This phase focused on isolating state logic, normalizing Pinia stores, encapsulating browser-side replicant access, and moving side effects behind services without changing UX, visual design, overlay CSS, or public NodeCG contracts.
+
+## Completed
+
+- Added pure state/domain modules:
+  - `src/shared/domain/scoreboard`
+  - `src/shared/domain/commentary`
+  - `src/shared/domain/graphics`
+  - `src/shared/domain/players/state.ts`
+  - `src/shared/domain/packs/characters.ts`
+- Moved normalization and pure state transitions out of dashboard stores.
+- Replaced direct dashboard replicant imports with `src/dashboard/services/replicant-state-service.ts`.
+- Added `useGraphicsSettingsStore` and moved dashboard graphics skin writes through the store.
+- Reworked scoreboard, players and commentary stores to use shared domain normalizers and service-based replicant sync.
+- Replaced the pack registry singleton composable with a normalized `usePacksStore`.
+- Moved pack replicant listeners and NodeCG pack messages into `src/dashboard/services/pack-service.ts`.
+- Removed Vue reactivity and mutable pack registration from `src/shared/fighting-characters.ts`.
+- Modeled installed pack manifests as explicit store state instead of hidden module state.
+- Centralized registry auto-refresh timer in the packs store.
+- Routed integration NodeCG messages through `src/dashboard/services/integration-message-service.ts`.
+- Added `src/graphics/shared/services/replicated-state.ts` so graphics read replicants through a service layer.
+- Removed the redundant `src/dashboard/stores/store-sync.ts`.
+
+## Preserved
+
+- Public replicant names were unchanged.
+- Public message names were unchanged.
+- Existing dashboard UX was preserved.
+- Overlay markup, CSS, positioning and animation logic were not intentionally changed.
+- The existing `usePackRegistry` import path remains as a compatibility wrapper over the packs store.
+- The legacy `src/shared/fighting-characters.ts` path remains as a compatibility export, but no longer owns mutable runtime state.
+
+## Realtime Flow After This Phase
+
+```text
+schemas
+  -> nodecg/browser
+  -> dashboard services / graphics services
+  -> Pinia stores or overlay computed state
+  -> components
+```
+
+Pack runtime flow:
+
+```text
+pack replicants
+  -> pack service
+  -> packs store
+  -> pack registry compatibility composable
+  -> game / character UI
+```
+
+## 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.
+- Searched dashboard, graphics and shared for direct NodeCG/message/replicant imports:
+  - remaining browser NodeCG access is contained in services and `nodecg/browser`.
+  - direct component/view replicant imports were removed.
+- Searched for `any` in touched runtime areas:
+  - no new TypeScript `any` usage was added.
+
+## Notes and Limits
+
+- This phase did not split large views like `Players.vue` or `Settings.vue`.
+- This phase did not refactor overlay internals beyond replacing direct replicant imports with a read service.
+- This phase did not rewrite extension-side `pack-manager.ts`.
+- This phase did not rename public messages to the future canonical names; compatibility was preserved.
+- Existing Vue lint warnings remain formatting-only and were not addressed because they are outside this phase.
+
+## Remaining For Later Phases
+
+- Controlled rewrite of `pack-manager.ts`.
+- Full split of `useIntegration` into provider clients, OAuth client, temporary players and import modules.
+- Divide `Players.vue` and `Settings.vue`.
+- Extract overlay view models and visual helpers after visual baseline.
+- Add tests for pure normalizers and pack state derivations.
diff --git a/src/dashboard/scoreko-dev/components/BracketPanel.vue b/src/dashboard/scoreko-dev/components/BracketPanel.vue
index cec2943..c176692 100644
--- a/src/dashboard/scoreko-dev/components/BracketPanel.vue
+++ b/src/dashboard/scoreko-dev/components/BracketPanel.vue
@@ -83,12 +83,12 @@ const updateRound = () => {
     return;
   }
   if (customActive.value) {
-    scoreboardStore.scoreboard.round = customText.value.trim();
+    scoreboardStore.setRound(customText.value.trim());
     return;
   }
 
   const prefix = bracketSide.value ? `${bracketSide.value} ` : '';
-  scoreboardStore.scoreboard.round = `${prefix}${stage.value}`.trim();
+  scoreboardStore.setRound(`${prefix}${stage.value}`.trim());
 };
 
 watch([stage, bracketSide, customText, customActive], updateRound);
diff --git a/src/dashboard/scoreko-dev/components/CommentaryPanel.vue b/src/dashboard/scoreko-dev/components/CommentaryPanel.vue
index 3c454c7..a1f2d03 100644
--- a/src/dashboard/scoreko-dev/components/CommentaryPanel.vue
+++ b/src/dashboard/scoreko-dev/components/CommentaryPanel.vue
@@ -1,5 +1,6 @@
 <script setup lang="ts">
 import { computed } from 'vue';
+import { stripTwitterPrefix } from '../../../shared/domain/commentary';
 import { t } from '../i18n';
 import { useCommentaryStore } from '../../stores/commentary';
 
@@ -17,25 +18,18 @@ const twitterRules = [
     !val || TWITTER_VALID_CHARS.test(val) || t('commentaryTwitterInvalidChars'),
 ];
 
-function stripAt(value: string): string {
-  return value.startsWith('@') ? value.slice(1) : value;
-}
-
 function handleLeftTwitterInput(value: string | number | null) {
-  commentaryStore.leftCommentatorTwitter = value ? stripAt(String(value)) : '';
+  commentaryStore.leftCommentatorTwitter = value ? stripTwitterPrefix(String(value)) : '';
 }
 
 function handleRightTwitterInput(value: string | number | null) {
-  commentaryStore.rightCommentatorTwitter = value ? stripAt(String(value)) : '';
+  commentaryStore.rightCommentatorTwitter = value ? stripTwitterPrefix(String(value)) : '';
 }
 
 // --- Clear ---
 
 function clearAll() {
-  commentaryStore.leftCommentator = '';
-  commentaryStore.leftCommentatorTwitter = '';
-  commentaryStore.rightCommentator = '';
-  commentaryStore.rightCommentatorTwitter = '';
+  commentaryStore.clearCommentary();
 }
 
 const isAnythingFilled = computed(() =>
diff --git a/src/dashboard/scoreko-dev/components/PlayerSidePanel.vue b/src/dashboard/scoreko-dev/components/PlayerSidePanel.vue
index 7f26a63..f07a73d 100644
--- a/src/dashboard/scoreko-dev/components/PlayerSidePanel.vue
+++ b/src/dashboard/scoreko-dev/components/PlayerSidePanel.vue
@@ -74,8 +74,7 @@ const character = computed({
     ? scoreboardStore.scoreboard.leftCharacter
     : scoreboardStore.scoreboard.rightCharacter),
   set: (v) => {
-    if (isLeft.value) scoreboardStore.scoreboard.leftCharacter = v;
-    else scoreboardStore.scoreboard.rightCharacter = v;
+    scoreboardStore.setSideCharacter(props.side, v);
   },
 });
 
diff --git a/src/dashboard/scoreko-dev/components/ScoreCenterPanel.vue b/src/dashboard/scoreko-dev/components/ScoreCenterPanel.vue
index 0d3af7a..74144cd 100644
--- a/src/dashboard/scoreko-dev/components/ScoreCenterPanel.vue
+++ b/src/dashboard/scoreko-dev/components/ScoreCenterPanel.vue
@@ -21,28 +21,24 @@ const {
 // Refresca el catálogo al montar y luego cada 15 segundos automáticamente.
 // Si Gitea no está disponible se usa la caché persistida del replicante.
 onMounted(() => {
-  packRegistry.fetchRegistry();
+  packRegistry.startRegistryRefresh();
 });
 
-const refreshInterval = setInterval(() => {
-  packRegistry.fetchRegistry();
-}, 15_000);
-
 onUnmounted(() => {
-  clearInterval(refreshInterval);
+  packRegistry.stopRegistryRefresh();
 });
 
 const adjustLeftScore = (delta: number) => {
-  scoreboardStore.leftScore = Math.max(0, scoreboardStore.leftScore + delta);
+  scoreboardStore.adjustScore('left', delta);
 };
 
 const adjustRightScore = (delta: number) => {
-  scoreboardStore.rightScore = Math.max(0, scoreboardStore.rightScore + delta);
+  scoreboardStore.adjustScore('right', delta);
 };
 
 /** Tras una descarga exitosa, activa el juego en el store. */
 const onPackDownloaded = (gameName: string) => {
-  scoreboardStore.scoreboard.game = gameName;
+  scoreboardStore.setGame(gameName);
 };
 
 // ── Estado del diálogo de actualización ───────────────────────────────────────
diff --git a/src/dashboard/scoreko-dev/composables/useCharacterGame.ts b/src/dashboard/scoreko-dev/composables/useCharacterGame.ts
index 127f8d7..5b20bc4 100644
--- a/src/dashboard/scoreko-dev/composables/useCharacterGame.ts
+++ b/src/dashboard/scoreko-dev/composables/useCharacterGame.ts
@@ -13,14 +13,14 @@
 // ─────────────────────────────────────────────────────────────────────────────
 
 import { computed, ref, watch, type InjectionKey, type Ref } from 'vue';
-import { getCharactersByGame, getDefaultCharactersByGame, installedPacksRevision } from '../../../shared/fighting-characters';
+import type { FightingCharacterOption } from '../../../shared/domain/packs/characters';
 import type { GameSelectOption, PackRegistryEntry } from '../../../shared/domain/packs/types';
 import { useScoreboardStore } from '../../stores/scoreboard';
 import { usePackRegistry } from './usePackRegistry';
 
 // ── Types ─────────────────────────────────────────────────────────────────────
 
-export type CharacterOption = ReturnType<typeof getCharactersByGame>[number];
+export type CharacterOption = FightingCharacterOption;
 export type CharacterGameContext = ReturnType<typeof useCharacterGame>;
 export const CHARACTER_GAME_KEY: InjectionKey<CharacterGameContext> = Symbol('characterGame');
 
@@ -62,7 +62,7 @@ export function useCharacterGame() {
    */
   const handleGameSelect = (gameName: string) => {
     if (!gameName) {
-      scoreboardStore.scoreboard.game = '';
+      scoreboardStore.setGame('');
       return;
     }
     if (!packRegistry.isGameAvailable(gameName)) {
@@ -72,17 +72,13 @@ export function useCharacterGame() {
       // Do NOT update the store — the game isn't installed
       return;
     }
-    scoreboardStore.scoreboard.game = gameName;
+    scoreboardStore.setGame(gameName);
   };
 
   // ── Character state ───────────────────────────────────────────────────────
 
   const characterOptions = computed(() => {
-    // Subscribing to installedPacksRevision forces Vue to re-evaluate this
-    // computed whenever a pack is registered/unregistered at runtime, even
-    // though scoreboardStore.scoreboard.game itself hasn't changed.
-    void installedPacksRevision.value;
-    return getCharactersByGame(scoreboardStore.scoreboard.game);
+    return packRegistry.getCharactersByGame(scoreboardStore.scoreboard.game);
   });
   const leftCharacterOptions = ref<CharacterOption[]>([]);
   const rightCharacterOptions = ref<CharacterOption[]>([]);
@@ -155,11 +151,11 @@ export function useCharacterGame() {
         };
       }
 
-      const options = getCharactersByGame(newGame);
+      const options = packRegistry.getCharactersByGame(newGame);
 
       // If the game is set but has no options yet, the pack is still loading
-      // (installed pack whose registerInstalledPack() hasn't run yet).
-      // Bail out — the installedPacksRevision watcher below will restore state
+      // (installed pack whose manifest has not been loaded into the pack store yet).
+      // Bail out — the characterOptions watcher below will restore state
       // once the pack becomes available.
       if (newGame && options.length === 0) return;
 
@@ -176,7 +172,7 @@ export function useCharacterGame() {
       if (!allowed.has(nextRight)) nextRight = '';
 
       if ((!nextLeft || !nextRight) && (!curLeft || !curRight)) {
-        const defaults = getDefaultCharactersByGame(newGame);
+        const defaults = packRegistry.getDefaultCharactersByGame(newGame);
         if (defaults) {
           if (!nextLeft) nextLeft = allowed.has(defaults.leftCharacter) ? defaults.leftCharacter : '';
           if (!nextRight) nextRight = allowed.has(defaults.rightCharacter) ? defaults.rightCharacter : '';
@@ -184,16 +180,16 @@ export function useCharacterGame() {
       }
 
       if (allowed.has(nextLeft)) {
-        scoreboardStore.scoreboard.leftCharacter = nextLeft;
+        scoreboardStore.setSideCharacter('left', nextLeft);
       } else if (!allowed.has(scoreboardStore.scoreboard.leftCharacter)) {
-        scoreboardStore.scoreboard.leftCharacter = '';
+        scoreboardStore.setSideCharacter('left', '');
         leftCharacterInput.value = '';
       }
 
       if (allowed.has(nextRight)) {
-        scoreboardStore.scoreboard.rightCharacter = nextRight;
+        scoreboardStore.setSideCharacter('right', nextRight);
       } else if (!allowed.has(scoreboardStore.scoreboard.rightCharacter)) {
-        scoreboardStore.scoreboard.rightCharacter = '';
+        scoreboardStore.setSideCharacter('right', '');
         rightCharacterInput.value = '';
       }
     },
@@ -232,14 +228,12 @@ export function useCharacterGame() {
     { immediate: true },
   );
 
-  // When an installed pack becomes available (e.g. after page refresh while
-  // the pack loads asynchronously), re-validate and restore the characters
-  // that are already in the store but couldn't be confirmed before.
-  watch(installedPacksRevision, () => {
+  // When an installed pack manifest becomes available, re-validate characters
+  // already present in the replicated scoreboard state.
+  watch(characterOptions, (options) => {
     const game = scoreboardStore.scoreboard.game;
     if (!game) return;
 
-    const options = getCharactersByGame(game);
     if (options.length === 0) return;
 
     const allowed = new Set(options.map((o) => o.value));
@@ -251,14 +245,14 @@ export function useCharacterGame() {
     if (leftCharacter && allowed.has(leftCharacter)) {
       leftCharacterInput.value = options.find((o) => o.value === leftCharacter)?.label ?? '';
     } else if (leftCharacter && !allowed.has(leftCharacter)) {
-      scoreboardStore.scoreboard.leftCharacter = '';
+      scoreboardStore.setSideCharacter('left', '');
       leftCharacterInput.value = '';
     }
 
     if (rightCharacter && allowed.has(rightCharacter)) {
       rightCharacterInput.value = options.find((o) => o.value === rightCharacter)?.label ?? '';
     } else if (rightCharacter && !allowed.has(rightCharacter)) {
-      scoreboardStore.scoreboard.rightCharacter = '';
+      scoreboardStore.setSideCharacter('right', '');
       rightCharacterInput.value = '';
     }
   });
diff --git a/src/dashboard/scoreko-dev/composables/useIntegration.ts b/src/dashboard/scoreko-dev/composables/useIntegration.ts
index 9761d78..44ec8f7 100644
--- a/src/dashboard/scoreko-dev/composables/useIntegration.ts
+++ b/src/dashboard/scoreko-dev/composables/useIntegration.ts
@@ -1,5 +1,5 @@
 import { computed, onBeforeUnmount, onMounted, reactive, ref, watch } from 'vue';
-import { sendNodecgMessage } from '../../../nodecg/browser/messages';
+import { sendIntegrationMessage } from '../../services/integration-message-service';
 
 // ─── Tipos ─────────────────────────────────────────────────────────────────────
 
@@ -66,8 +66,6 @@ export interface UseIntegrationOptions {
   playersStore: PlayersStore;
 }
 
-// ─── Utilidad para mensajes NodeCG ─────────────────────────────────────────────
-
 // ─── Composable ────────────────────────────────────────────────────────────────
 
 export function useIntegration(options: UseIntegrationOptions) {
@@ -155,8 +153,9 @@ export function useIntegration(options: UseIntegrationOptions) {
     tournamentsError.value = '';
     loadingTournaments.value = true;
     try {
-      const tournaments = await sendNodecgMessage<IntegrationTournament[]>(
-        `${messagePrefix}:fetchRecentTournaments`,
+      const tournaments = await sendIntegrationMessage<IntegrationTournament[]>(
+        messagePrefix,
+        'fetchRecentTournaments',
         { token: currentToken },
       );
       hasValidatedToken.value = true;
@@ -194,8 +193,9 @@ export function useIntegration(options: UseIntegrationOptions) {
     players.value = [];
 
     try {
-      const importedPlayers = await sendNodecgMessage<IntegrationPlayer[]>(
-        `${messagePrefix}:fetchTournamentPlayers`,
+      const importedPlayers = await sendIntegrationMessage<IntegrationPlayer[]>(
+        messagePrefix,
+        'fetchTournamentPlayers',
         { token: token.value.trim(), slug: tournament.slug },
       );
       players.value = importedPlayers;
@@ -315,8 +315,9 @@ export function useIntegration(options: UseIntegrationOptions) {
     if (!oauthSessionId.value) return;
 
     try {
-      const status = await sendNodecgMessage<OAuthStatusResponse>(
-        `${messagePrefix}:getOAuthSessionStatus`,
+      const status = await sendIntegrationMessage<OAuthStatusResponse>(
+        messagePrefix,
+        'getOAuthSessionStatus',
         { sessionId: oauthSessionId.value },
       );
 
@@ -352,8 +353,9 @@ export function useIntegration(options: UseIntegrationOptions) {
     stopPolling();
 
     try {
-      const session = await sendNodecgMessage<OAuthSessionResponse>(
-        `${messagePrefix}:createOAuthSession`,
+      const session = await sendIntegrationMessage<OAuthSessionResponse>(
+        messagePrefix,
+        'createOAuthSession',
         {},
       );
       oauthSessionId.value = session.sessionId;
diff --git a/src/dashboard/scoreko-dev/composables/usePackRegistry.ts b/src/dashboard/scoreko-dev/composables/usePackRegistry.ts
index 3c13bb9..85e5c1a 100644
--- a/src/dashboard/scoreko-dev/composables/usePackRegistry.ts
+++ b/src/dashboard/scoreko-dev/composables/usePackRegistry.ts
@@ -1,235 +1,68 @@
-// src/dashboard/scoreboard/composables/usePackRegistry.ts
-// ─────────────────────────────────────────────────────────────────────────────
-// Singleton composable. The first caller sets up NodeCG replicant listeners;
-// subsequent calls return the same reactive state. This avoids duplicate event
-// listeners when multiple components call usePackRegistry().
-// ─────────────────────────────────────────────────────────────────────────────
-
-import { computed, ref, type ComputedRef, type InjectionKey } from 'vue';
-import {
-  registerInstalledPack,
-  unregisterInstalledPack,
-} from '../../../shared/fighting-characters';
-import { sendNodecgCommand, sendNodecgMessage } from '../../../nodecg/browser/messages';
-import { createPackBrowserReplicants } from '../../../nodecg/browser/packReplicants';
-import { messageNames } from '../../../nodecg/messageNames';
+import { storeToRefs } from 'pinia';
+import type { InjectionKey, Ref } from 'vue';
+import { usePacksStore } from '../../stores/packs';
+import type { DefaultCharacterPair, FightingCharacterOption } from '../../../shared/domain/packs/characters';
 import type {
   GameSelectOption,
   PackDownloadState,
-  PackManifest,
   PackRegistry,
   PackUpdateInfo,
 } from '../../../shared/domain/packs/types';
 
-// ── NodeCG global type declarations ──────────────────────────────────────────
-// NodeCG injects these into the browser window via its bundle script.
-
-// ── Module-level singleton state ──────────────────────────────────────────────
-
-let initialized = false;
-
-const registry = ref<PackRegistry | null>(null);
-const installedPackIds = ref<string[]>([]);
-const downloadStates = ref<Record<string, PackDownloadState>>({});
-const availableUpdates = ref<Record<string, PackUpdateInfo>>({});
-
-// Tracks which installed pack manifests have been loaded into fighting-characters.ts
-const loadedManifestIds = new Set<string>();
-
-// ── Helpers ───────────────────────────────────────────────────────────────────
-
-const formatBytes = (bytes: number): string => {
-  if (bytes < 1024) return `${bytes} B`;
-  if (bytes < 1024 * 1024) return `${(bytes / 1024).toFixed(1)} KB`;
-  return `${(bytes / (1024 * 1024)).toFixed(1)} MB`;
-};
-
-/**
- * Asks the NodeCG extension to read the local manifest.json for an installed
- * pack and registers the characters in fighting-characters.ts.
- */
-const loadInstalledManifest = (packId: string): void => {
-  if (loadedManifestIds.has(packId)) return;
-
-  sendNodecgMessage<PackManifest>(messageNames.packs.readLocalManifest, packId)
-    .then((manifest) => {
-      registerInstalledPack(manifest);
-      loadedManifestIds.add(packId);
-    })
-    .catch((err: unknown) => {
-      console.error(`[usePackRegistry] Failed to load manifest for "${packId}":`, err);
-    });
-};
-
-// ── Replicant setup (runs once) ───────────────────────────────────────────────
-
-const initReplicants = (): void => {
-  if (initialized) return;
-  initialized = true;
-
-  const { registryRep, installedRep, statesRep, updatesRep, waitUntilReady } =
-    createPackBrowserReplicants();
-
-  waitUntilReady().then(() => {
-    // Hydrate initial values
-    registry.value = registryRep.value;
-    installedPackIds.value = installedRep.value ?? [];
-    downloadStates.value = statesRep.value ?? {};
-    availableUpdates.value = updatesRep.value ?? {};
-
-    // Load manifests for all installed packs
-    for (const id of installedPackIds.value) {
-      loadInstalledManifest(id);
-    }
-
-    // Subscribe to changes
-    registryRep.on('change', (val) => {
-      registry.value = val;
-    });
-
-    installedRep.on('change', (newVal, oldVal) => {
-      const next = newVal ?? [];
-      const prev = oldVal ?? [];
-      installedPackIds.value = next;
-
-      // Load manifests for newly installed packs
-      const added = next.filter((id) => !prev.includes(id));
-      for (const id of added) {
-        loadInstalledManifest(id);
-      }
-
-      // Unregister packs that were removed
-      const removed = prev.filter((id) => !next.includes(id));
-      for (const id of removed) {
-        const gameName = getGameNameById(id);
-        unregisterInstalledPack(gameName);
-        loadedManifestIds.delete(id);
-      }
-    });
-
-    statesRep.on('change', (val) => {
-      downloadStates.value = val ?? {};
-    });
-
-    updatesRep.on('change', (val) => {
-      availableUpdates.value = val ?? {};
-    });
-  });
-};
-
-/**
- * Given a pack ID (e.g. "street-fighter-6"), returns the matching game name
- * from the current registry, or an empty string if the registry isn't loaded.
- */
-const getGameNameById = (packId: string): string =>
-  registry.value?.packs.find((p) => p.id === packId)?.name ?? '';
-
-// ── Public composable ─────────────────────────────────────────────────────────
-
 export interface PackRegistryContext {
-  /** Full registry fetched from Gitea (null until first fetch). */
-  registry: typeof registry;
-  /** IDs of packs installed on disk (bundled packs are NOT in this list). */
-  installedPackIds: typeof installedPackIds;
-  /** Per-pack download state. */
-  downloadStates: typeof downloadStates;
-  /** Checks if a game is available (bundled OR installed). */
+  registry: Ref<PackRegistry | null>;
+  installedPackIds: Ref<string[]>;
+  downloadStates: Ref<Record<string, PackDownloadState>>;
   isGameAvailable: (gameName: string) => boolean;
-  /** Returns the download state for a pack, or a default idle state. */
   getDownloadState: (packId: string) => PackDownloadState;
-  /** All games from the registry, enriched with availability info. */
-  allGameOptions: ReturnType<typeof buildAllGameOptions>;
-  /** Tells the extension to fetch the latest registry.json from Gitea. */
+  getCharactersByGame: (gameName: string) => FightingCharacterOption[];
+  getDefaultCharactersByGame: (gameName: string) => DefaultCharacterPair | undefined;
+  allGameOptions: Ref<GameSelectOption[]>;
   fetchRegistry: () => void;
-  /** Tells the extension to download and install a pack. */
+  startRegistryRefresh: (intervalMs?: number) => void;
+  stopRegistryRefresh: () => void;
   downloadPack: (packId: string) => void;
-  /** Tells the extension to uninstall a pack and delete its files. */
   uninstallPack: (packId: string) => void;
-  /** Tells the extension to download and apply an update for an installed pack. */
   updatePack: (packId: string) => void;
-  /** Map of packId → version info for packs that have a newer version available. */
-  availableUpdates: typeof availableUpdates;
-  /** Total number of packs with available updates. */
-  updateCount: ComputedRef<number>;
-  /** Human-readable file size. */
-  formatBytes: typeof formatBytes;
-  /** Returns the URL for the pack's logo served by NodeCG (installed packs only). */
+  availableUpdates: Ref<Record<string, PackUpdateInfo>>;
+  updateCount: Ref<number>;
+  formatBytes: (bytes: number) => string;
   getLocalLogoUrl: (packId: string) => string;
 }
 
 export const PACK_REGISTRY_KEY: InjectionKey<PackRegistryContext> = Symbol('packRegistry');
 
-const buildAllGameOptions = () =>
-  computed<GameSelectOption[]>(() => {
-    // Registry not loaded yet — return empty list
-    if (!registry.value) return [];
-
-    return registry.value.packs.map((entry) => ({
-      label: entry.name,
-      value: entry.name,
-      available: installedPackIds.value.includes(entry.id),
-      registryEntry: entry,
-      updateInfo: availableUpdates.value[entry.id],
-    }));
-  });
-
 export function usePackRegistry(): PackRegistryContext {
-  initReplicants();
+  const packsStore = usePacksStore();
+  packsStore.initialize();
 
-  const allGameOptions = buildAllGameOptions();
-
-  const isGameAvailable = (gameName: string): boolean => {
-    const entry = registry.value?.packs.find((p) => p.name === gameName);
-    if (!entry) return false;
-    return installedPackIds.value.includes(entry.id);
-  };
-
-  const getDownloadState = (packId: string): PackDownloadState =>
-    downloadStates.value[packId] ?? { status: 'idle', progress: 0 };
-
-  const getLocalLogoUrl = (packId: string): string =>
-    `/packs/${packId}/logo.png`;
-
-  const fetchRegistry = (): void => {
-    sendNodecgCommand(messageNames.packs.fetchRegistry).catch((err: unknown) => {
-      console.error('[usePackRegistry] fetchPackRegistry failed:', err);
-    });
-  };
-
-  const downloadPack = (packId: string): void => {
-    sendNodecgCommand(messageNames.packs.download, packId).catch((err: unknown) => {
-      console.error(`[usePackRegistry] downloadPack "${packId}" failed:`, err);
-    });
-  };
-
-  const uninstallPack = (packId: string): void => {
-    sendNodecgCommand(messageNames.packs.uninstall, packId).catch((err: unknown) => {
-      console.error(`[usePackRegistry] uninstallPack "${packId}" failed:`, err);
-    });
-  };
-
-  const updatePack = (packId: string): void => {
-    sendNodecgCommand(messageNames.packs.update, packId).catch((err: unknown) => {
-      console.error(`[usePackRegistry] updatePack "${packId}" failed:`, err);
-    });
-  };
-
-  const updateCount = computed(() => Object.keys(availableUpdates.value).length);
+  const {
+    registry,
+    installedPackIds,
+    downloadStates,
+    availableUpdates,
+    allGameOptions,
+    updateCount,
+  } = storeToRefs(packsStore);
 
   return {
     registry,
     installedPackIds,
     downloadStates,
-    isGameAvailable,
-    getDownloadState,
+    isGameAvailable: packsStore.isGameAvailable,
+    getDownloadState: packsStore.getDownloadState,
+    getCharactersByGame: packsStore.getCharactersByGame,
+    getDefaultCharactersByGame: packsStore.getDefaultCharactersByGame,
     allGameOptions,
-    fetchRegistry,
-    downloadPack,
-    uninstallPack,
-    updatePack,
+    fetchRegistry: packsStore.fetchRegistry,
+    startRegistryRefresh: packsStore.startRegistryRefresh,
+    stopRegistryRefresh: packsStore.stopRegistryRefresh,
+    downloadPack: packsStore.downloadPack,
+    uninstallPack: packsStore.uninstallPack,
+    updatePack: packsStore.updatePack,
     availableUpdates,
     updateCount,
-    formatBytes,
-    getLocalLogoUrl,
+    formatBytes: packsStore.formatBytes,
+    getLocalLogoUrl: packsStore.getLocalLogoUrl,
   };
 }
diff --git a/src/dashboard/scoreko-dev/composables/usePlayerSide.ts b/src/dashboard/scoreko-dev/composables/usePlayerSide.ts
index c8ad560..eab6c10 100644
--- a/src/dashboard/scoreko-dev/composables/usePlayerSide.ts
+++ b/src/dashboard/scoreko-dev/composables/usePlayerSide.ts
@@ -2,6 +2,7 @@ import { computed, ref, watch, watchEffect } from 'vue';
 import { useScoreboardStore } from '../../stores/scoreboard';
 import { usePlayersStore } from '../../stores/players';
 import type { Schemas } from '../../../types';
+import { createPlayerId, normalizePlayerName } from '../../../shared/domain/players/state';
 import { t } from '../i18n';
 import { useCountryFilter } from './useCountryFilter';
 
@@ -16,34 +17,6 @@ export const CUSTOM_RIGHT_PLAYER_ID = '__custom_right_player__';
 // Pure helpers (no Vue reactivity)
 // ---------------------------------------------------------------------------
 
-const normalizeName = (value: string) => value.trim().toLowerCase();
-
-/**
- * Generates a unique slug-based player ID that does not collide with
- * existing player keys in the store.
- */
-const createPlayerId = (name: string, players: Schemas.Players): string => {
-  const base = name
-    .trim()
-    .toLowerCase()
-    .normalize('NFD')
-    .replace(/[^\w\s-]/g, '')
-    .replace(/[\u0300-\u036f]/g, '')
-    .replace(/\s+/g, '-') || 'player';
-
-  let index = 1;
-  let candidate = base;
-  while (players[candidate]) {
-    index += 1;
-    candidate = `${base}-${index}`;
-  }
-  return candidate;
-};
-
-// ---------------------------------------------------------------------------
-// Composable
-// ---------------------------------------------------------------------------
-
 /**
  * Encapsulates all reactive state and handlers for one side of the scoreboard
  * (left or right). Call once per side inside the corresponding component.
@@ -63,32 +36,28 @@ export function usePlayerSide(side: 'left' | 'right') {
   const playerId = computed({
     get: () => (isLeft ? scoreboardStore.scoreboard.leftPlayerId : scoreboardStore.scoreboard.rightPlayerId),
     set: (v) => {
-      if (isLeft) scoreboardStore.scoreboard.leftPlayerId = v;
-      else scoreboardStore.scoreboard.rightPlayerId = v;
+      scoreboardStore.setSidePlayerId(side, v);
     },
   });
 
   const nameOverride = computed({
     get: () => (isLeft ? scoreboardStore.scoreboard.leftNameOverride : scoreboardStore.scoreboard.rightNameOverride),
     set: (v) => {
-      if (isLeft) scoreboardStore.scoreboard.leftNameOverride = v;
-      else scoreboardStore.scoreboard.rightNameOverride = v;
+      scoreboardStore.setSideNameOverride(side, v);
     },
   });
 
   const teamOverride = computed({
     get: () => (isLeft ? scoreboardStore.scoreboard.leftTeamOverride : scoreboardStore.scoreboard.rightTeamOverride),
     set: (v) => {
-      if (isLeft) scoreboardStore.scoreboard.leftTeamOverride = v;
-      else scoreboardStore.scoreboard.rightTeamOverride = v;
+      scoreboardStore.setSideTeamOverride(side, v);
     },
   });
 
   const countryOverride = computed({
     get: () => (isLeft ? scoreboardStore.scoreboard.leftCountryOverride : scoreboardStore.scoreboard.rightCountryOverride),
     set: (v) => {
-      if (isLeft) scoreboardStore.scoreboard.leftCountryOverride = v;
-      else scoreboardStore.scoreboard.rightCountryOverride = v;
+      scoreboardStore.setSideCountryOverride(side, v);
     },
   });
 
@@ -145,10 +114,10 @@ export function usePlayerSide(side: 'left' | 'right') {
   };
 
   const playerExistsByGamertag = (name: string): boolean => {
-    const normalized = normalizeName(name);
+    const normalized = normalizePlayerName(name);
     return Boolean(normalized)
       && Object.values(playersStore.players).some(
-        (p) => normalizeName(p.gamertag || '') === normalized,
+        (p) => normalizePlayerName(p.gamertag || '') === normalized,
       );
   };
 
diff --git a/src/dashboard/scoreko-dev/views/Graphics.vue b/src/dashboard/scoreko-dev/views/Graphics.vue
index 1d13b48..c70ede4 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 '../../../nodecg/browser/replicants';
+import { useGraphicsSettingsStore } from '../../stores/graphics-settings';
 import { t } from '../i18n';
 
 defineOptions({ name: 'GraphicsView' });
@@ -24,6 +24,7 @@ type GraphicCard = {
 
 useHead(() => ({ title: t('graphicsTitle') }));
 
+const graphicsSettingsStore = useGraphicsSettingsStore();
 const graphics = computed<GraphicConfig[]>(() => bundlePackage.nodecg?.graphics ?? []);
 
 const baseUrl = computed(() => {
@@ -60,7 +61,7 @@ const commentaryGraphic = computed(() =>
 const selectedScoreboardSkin = ref<string>('');
 
 watch(
-  [scoreboardGraphics, () => graphicsSettingsReplicant?.data?.scoreboardSkin],
+  [scoreboardGraphics, () => graphicsSettingsStore.settings.scoreboardSkin],
   ([availableSkins, replicatedSkin]) => {
     if (availableSkins.length === 0) {
       selectedScoreboardSkin.value = '';
@@ -87,18 +88,15 @@ watch(
 watch(
   selectedScoreboardSkin,
   (value) => {
-    if (!value || !graphicsSettingsReplicant) {
+    if (!value) {
       return;
     }
 
-    if (graphicsSettingsReplicant.data?.scoreboardSkin === value) {
+    if (graphicsSettingsStore.settings.scoreboardSkin === value) {
       return;
     }
 
-    graphicsSettingsReplicant.data = {
-      scoreboardSkin: value,
-    };
-    graphicsSettingsReplicant.save();
+    graphicsSettingsStore.setScoreboardSkin(value);
   },
   { immediate: true },
 );
diff --git a/src/dashboard/services/integration-message-service.ts b/src/dashboard/services/integration-message-service.ts
new file mode 100644
index 0000000..abff477
--- /dev/null
+++ b/src/dashboard/services/integration-message-service.ts
@@ -0,0 +1,8 @@
+import { sendNodecgMessage } from '../../nodecg/browser/messages';
+
+export const sendIntegrationMessage = <T>(
+  messagePrefix: string,
+  action: string,
+  payload: unknown,
+): Promise<T> =>
+  sendNodecgMessage<T>(`${messagePrefix}:${action}`, payload);
diff --git a/src/dashboard/services/pack-service.ts b/src/dashboard/services/pack-service.ts
new file mode 100644
index 0000000..33af702
--- /dev/null
+++ b/src/dashboard/services/pack-service.ts
@@ -0,0 +1,79 @@
+import { sendNodecgCommand, sendNodecgMessage } from '../../nodecg/browser/messages';
+import { createPackBrowserReplicants } from '../../nodecg/browser/packReplicants';
+import { messageNames } from '../../nodecg/messageNames';
+import type {
+  PackDownloadState,
+  PackManifest,
+  PackRegistry,
+  PackUpdateInfo,
+} from '../../shared/domain/packs/types';
+
+export interface PackReplicantHandlers {
+  onRegistryChanged: (value: PackRegistry | null) => void;
+  onInstalledPacksChanged: (value: string[], previousValue: string[]) => void;
+  onDownloadStatesChanged: (value: Record<string, PackDownloadState>) => void;
+  onAvailableUpdatesChanged: (value: Record<string, PackUpdateInfo>) => void;
+}
+
+export interface PackService {
+  subscribe: (handlers: PackReplicantHandlers) => Promise<() => void>;
+  fetchRegistry: () => Promise<void>;
+  downloadPack: (packId: string) => Promise<void>;
+  uninstallPack: (packId: string) => Promise<void>;
+  updatePack: (packId: string) => Promise<void>;
+  readLocalManifest: (packId: string) => Promise<PackManifest>;
+}
+
+export const createPackService = (): PackService => {
+  const subscribe = async (handlers: PackReplicantHandlers): Promise<() => void> => {
+    const {
+      registryRep,
+      installedRep,
+      statesRep,
+      updatesRep,
+      waitUntilReady,
+    } = createPackBrowserReplicants();
+
+    await waitUntilReady();
+
+    handlers.onRegistryChanged(registryRep.value ?? null);
+    handlers.onInstalledPacksChanged(installedRep.value ?? [], []);
+    handlers.onDownloadStatesChanged(statesRep.value ?? {});
+    handlers.onAvailableUpdatesChanged(updatesRep.value ?? {});
+
+    const onRegistryChanged = (value: PackRegistry | null): void => {
+      handlers.onRegistryChanged(value ?? null);
+    };
+    const onInstalledPacksChanged = (value: string[], previousValue?: string[]): void => {
+      handlers.onInstalledPacksChanged(value ?? [], previousValue ?? []);
+    };
+    const onDownloadStatesChanged = (value: Record<string, PackDownloadState>): void => {
+      handlers.onDownloadStatesChanged(value ?? {});
+    };
+    const onAvailableUpdatesChanged = (value: Record<string, PackUpdateInfo>): void => {
+      handlers.onAvailableUpdatesChanged(value ?? {});
+    };
+
+    registryRep.on('change', onRegistryChanged);
+    installedRep.on('change', onInstalledPacksChanged);
+    statesRep.on('change', onDownloadStatesChanged);
+    updatesRep.on('change', onAvailableUpdatesChanged);
+
+    return () => {
+      registryRep.off('change', onRegistryChanged);
+      installedRep.off('change', onInstalledPacksChanged);
+      statesRep.off('change', onDownloadStatesChanged);
+      updatesRep.off('change', onAvailableUpdatesChanged);
+    };
+  };
+
+  return {
+    subscribe,
+    fetchRegistry: () => sendNodecgCommand(messageNames.packs.fetchRegistry),
+    downloadPack: (packId: string) => sendNodecgCommand(messageNames.packs.download, packId),
+    uninstallPack: (packId: string) => sendNodecgCommand(messageNames.packs.uninstall, packId),
+    updatePack: (packId: string) => sendNodecgCommand(messageNames.packs.update, packId),
+    readLocalManifest: (packId: string) =>
+      sendNodecgMessage<PackManifest>(messageNames.packs.readLocalManifest, packId),
+  };
+};
diff --git a/src/dashboard/stores/store-sync.ts b/src/dashboard/services/replicant-state-service.ts
similarity index 51%
rename from src/dashboard/stores/store-sync.ts
rename to src/dashboard/services/replicant-state-service.ts
index 90c5bc4..6a247c7 100644
--- a/src/dashboard/stores/store-sync.ts
+++ b/src/dashboard/services/replicant-state-service.ts
@@ -1,4 +1,10 @@
 import { ref, watch, type Ref } from 'vue';
+import { commentaryReplicant, graphicsSettingsReplicant, playersReplicant, scoreboardReplicant } from '../../nodecg/browser/replicants';
+import { normalizeCommentary } from '../../shared/domain/commentary';
+import { normalizeGraphicsSettings } from '../../shared/domain/graphics';
+import { normalizePlayers } from '../../shared/domain/players/state';
+import { normalizeScoreboard } from '../../shared/domain/scoreboard';
+import type { Schemas } from '../../types';
 
 interface ReplicantLike<T> {
   data: T | undefined;
@@ -36,7 +42,7 @@ export const writeStorageSnapshot = <T>(storageKey: string, value: T): void => {
   }
 };
 
-export const syncStateWithReplicant = <T>(
+const syncStateWithReplicant = <T>(
   state: Ref<T>,
   replicant: ReplicantLike<T> | undefined,
   normalize: (input: unknown) => T,
@@ -44,24 +50,21 @@ export const syncStateWithReplicant = <T>(
 ): void => {
   const isApplyingReplicant = ref(false);
   const persistSnapshot = (value: T): void => {
-    if (!storageKey) {
-      return;
+    if (storageKey) {
+      writeStorageSnapshot(storageKey, value);
     }
-
-    writeStorageSnapshot(storageKey, value);
   };
 
   watch(
     () => replicant?.data,
     (value) => {
-      if (!value) {
+      if (value === undefined) {
         return;
       }
 
       isApplyingReplicant.value = true;
       state.value = normalize(value);
       isApplyingReplicant.value = false;
-
       persistSnapshot(state.value);
     },
     { deep: true, immediate: true },
@@ -70,16 +73,32 @@ export const syncStateWithReplicant = <T>(
   watch(
     state,
     (value) => {
-      persistSnapshot(value);
+      const normalized = normalize(value);
+      persistSnapshot(normalized);
 
       if (isApplyingReplicant.value || !replicant) {
         return;
       }
 
-      // Replicants remain the source of truth for server/browser synchronization.
-      replicant.data = normalize(value);
+      replicant.data = normalized;
       replicant.save();
     },
     { deep: true, flush: 'sync' },
   );
 };
+
+export const syncScoreboardState = (state: Ref<Schemas.Scoreboard>, storageKey: string): void => {
+  syncStateWithReplicant(state, scoreboardReplicant, normalizeScoreboard, storageKey);
+};
+
+export const syncPlayersState = (state: Ref<Schemas.Players>, storageKey: string): void => {
+  syncStateWithReplicant(state, playersReplicant, normalizePlayers, storageKey);
+};
+
+export const syncCommentaryState = (state: Ref<Schemas.Commentary>): void => {
+  syncStateWithReplicant(state, commentaryReplicant, normalizeCommentary);
+};
+
+export const syncGraphicsSettingsState = (state: Ref<Schemas.GraphicsSettings>): void => {
+  syncStateWithReplicant(state, graphicsSettingsReplicant, normalizeGraphicsSettings);
+};
diff --git a/src/dashboard/stores/commentary.ts b/src/dashboard/stores/commentary.ts
index 676c188..21910bb 100644
--- a/src/dashboard/stores/commentary.ts
+++ b/src/dashboard/stores/commentary.ts
@@ -1,32 +1,24 @@
 import { defineStore } from 'pinia';
 import { computed, ref } from 'vue';
-import { commentaryReplicant } from '../../nodecg/browser/replicants';
-import type { Schemas } from '../../types';
-import { syncStateWithReplicant } from './store-sync';
-
-type Commentary = Schemas.Commentary;
-
-const defaultCommentary: Commentary = {
-  leftCommentator: '',
-  leftCommentatorTwitter: '',
-  rightCommentator: '',
-  rightCommentatorTwitter: '',
-};
-
-const normalizeCommentary = (input: unknown): Commentary => {
-  const candidate = typeof input === 'object' && input !== null ? (input as Record<string, unknown>) : {};
-  return {
-    leftCommentator: typeof candidate.leftCommentator === 'string' ? candidate.leftCommentator : '',
-    leftCommentatorTwitter: typeof candidate.leftCommentatorTwitter === 'string' ? candidate.leftCommentatorTwitter : '',
-    rightCommentator: typeof candidate.rightCommentator === 'string' ? candidate.rightCommentator : '',
-    rightCommentatorTwitter: typeof candidate.rightCommentatorTwitter === 'string' ? candidate.rightCommentatorTwitter : '',
-  };
-};
+import {
+  defaultCommentary,
+  normalizeCommentary,
+  swapCommentary,
+  type Commentary,
+} from '../../shared/domain/commentary';
+import { syncCommentaryState } from '../services/replicant-state-service';
 
 export const useCommentaryStore = defineStore('commentary', () => {
   const commentary = ref<Commentary>({ ...defaultCommentary });
-  const replicant = commentaryReplicant;
-  syncStateWithReplicant(commentary, replicant, normalizeCommentary);
+  syncCommentaryState(commentary);
+
+  const setCommentary = (value: Commentary): void => {
+    commentary.value = normalizeCommentary(value);
+  };
+
+  const clearCommentary = (): void => {
+    commentary.value = { ...defaultCommentary };
+  };
 
   const leftCommentator = computed({
     get: () => commentary.value.leftCommentator,
@@ -68,13 +60,8 @@ export const useCommentaryStore = defineStore('commentary', () => {
     },
   });
 
-  const swapCommentators = () => {
-    commentary.value = {
-      leftCommentator: commentary.value.rightCommentator,
-      leftCommentatorTwitter: commentary.value.rightCommentatorTwitter,
-      rightCommentator: commentary.value.leftCommentator,
-      rightCommentatorTwitter: commentary.value.leftCommentatorTwitter,
-    };
+  const swapCommentators = (): void => {
+    commentary.value = swapCommentary(commentary.value);
   };
 
   return {
@@ -83,6 +70,8 @@ export const useCommentaryStore = defineStore('commentary', () => {
     leftCommentatorTwitter,
     rightCommentator,
     rightCommentatorTwitter,
+    setCommentary,
+    clearCommentary,
     swapCommentators,
   };
 });
diff --git a/src/dashboard/stores/graphics-settings.ts b/src/dashboard/stores/graphics-settings.ts
new file mode 100644
index 0000000..2d6e3b1
--- /dev/null
+++ b/src/dashboard/stores/graphics-settings.ts
@@ -0,0 +1,31 @@
+import { defineStore } from 'pinia';
+import { ref } from 'vue';
+import {
+  defaultGraphicsSettings,
+  normalizeGraphicsSettings,
+  type GraphicsSettings,
+} from '../../shared/domain/graphics';
+import { syncGraphicsSettingsState } from '../services/replicant-state-service';
+
+export const useGraphicsSettingsStore = defineStore('graphics-settings', () => {
+  const settings = ref<GraphicsSettings>({ ...defaultGraphicsSettings });
+
+  syncGraphicsSettingsState(settings);
+
+  const setSettings = (value: GraphicsSettings): void => {
+    settings.value = normalizeGraphicsSettings(value);
+  };
+
+  const setScoreboardSkin = (scoreboardSkin: string): void => {
+    settings.value = normalizeGraphicsSettings({
+      ...settings.value,
+      scoreboardSkin,
+    });
+  };
+
+  return {
+    settings,
+    setSettings,
+    setScoreboardSkin,
+  };
+});
diff --git a/src/dashboard/stores/packs.ts b/src/dashboard/stores/packs.ts
new file mode 100644
index 0000000..a9f00d3
--- /dev/null
+++ b/src/dashboard/stores/packs.ts
@@ -0,0 +1,218 @@
+import { defineStore } from 'pinia';
+import { computed, ref } from 'vue';
+import { createPackService } from '../services/pack-service';
+import {
+  buildCharactersByGame,
+  buildDefaultCharactersByGame,
+  type DefaultCharacterPair,
+  type FightingCharacterOption,
+} from '../../shared/domain/packs/characters';
+import type {
+  GameSelectOption,
+  PackDownloadState,
+  PackManifest,
+  PackRegistry,
+  PackUpdateInfo,
+} from '../../shared/domain/packs/types';
+
+const packService = createPackService();
+
+const formatBytes = (bytes: number): string => {
+  if (bytes < 1024) {
+    return `${bytes} B`;
+  }
+  if (bytes < 1024 * 1024) {
+    return `${(bytes / 1024).toFixed(1)} KB`;
+  }
+  return `${(bytes / (1024 * 1024)).toFixed(1)} MB`;
+};
+
+const getLocalLogoUrl = (packId: string): string => `/packs/${packId}/logo.png`;
+
+export const usePacksStore = defineStore('packs', () => {
+  const initialized = ref(false);
+  const registry = ref<PackRegistry | null>(null);
+  const installedPackIds = ref<string[]>([]);
+  const downloadStates = ref<Record<string, PackDownloadState>>({});
+  const availableUpdates = ref<Record<string, PackUpdateInfo>>({});
+  const installedManifests = ref<Record<string, PackManifest>>({});
+  const loadingManifestIds = new Set<string>();
+  let unsubscribe: (() => void) | null = null;
+  let registryRefreshTimer: ReturnType<typeof setInterval> | null = null;
+
+  const installedManifestList = computed(() =>
+    installedPackIds.value
+      .map((packId) => installedManifests.value[packId])
+      .filter((manifest): manifest is PackManifest => Boolean(manifest)),
+  );
+
+  const charactersByGame = computed(() => buildCharactersByGame(installedManifestList.value));
+  const defaultCharactersByGame = computed(() => buildDefaultCharactersByGame(installedManifestList.value));
+
+  const allGameOptions = computed<GameSelectOption[]>(() => {
+    if (!registry.value) {
+      return [];
+    }
+
+    return registry.value.packs.map((entry) => ({
+      label: entry.name,
+      value: entry.name,
+      available: installedPackIds.value.includes(entry.id),
+      registryEntry: entry,
+      updateInfo: availableUpdates.value[entry.id],
+    }));
+  });
+
+  const updateCount = computed(() => Object.keys(availableUpdates.value).length);
+
+  const loadInstalledManifest = (packId: string): void => {
+    if (installedManifests.value[packId] || loadingManifestIds.has(packId)) {
+      return;
+    }
+
+    loadingManifestIds.add(packId);
+    packService.readLocalManifest(packId)
+      .then((manifest) => {
+        installedManifests.value = {
+          ...installedManifests.value,
+          [packId]: manifest,
+        };
+      })
+      .catch((error: unknown) => {
+        console.error(`[packs] Failed to load manifest for "${packId}":`, error);
+      })
+      .finally(() => {
+        loadingManifestIds.delete(packId);
+      });
+  };
+
+  const syncInstalledManifests = (nextPackIds: string[]): void => {
+    const nextSet = new Set(nextPackIds);
+    const nextManifests: Record<string, PackManifest> = {};
+
+    Object.entries(installedManifests.value).forEach(([packId, manifest]) => {
+      if (nextSet.has(packId)) {
+        nextManifests[packId] = manifest;
+      }
+    });
+    installedManifests.value = nextManifests;
+
+    nextPackIds.forEach(loadInstalledManifest);
+  };
+
+  const initialize = (): void => {
+    if (initialized.value) {
+      return;
+    }
+
+    initialized.value = true;
+    packService.subscribe({
+      onRegistryChanged: (value) => {
+        registry.value = value;
+      },
+      onInstalledPacksChanged: (value) => {
+        installedPackIds.value = [...value];
+        syncInstalledManifests(value);
+      },
+      onDownloadStatesChanged: (value) => {
+        downloadStates.value = { ...value };
+      },
+      onAvailableUpdatesChanged: (value) => {
+        availableUpdates.value = { ...value };
+      },
+    })
+      .then((dispose) => {
+        unsubscribe = dispose;
+      })
+      .catch((error: unknown) => {
+        initialized.value = false;
+        console.error('[packs] Failed to subscribe to pack replicants:', error);
+      });
+  };
+
+  const dispose = (): void => {
+    unsubscribe?.();
+    unsubscribe = null;
+    if (registryRefreshTimer) {
+      clearInterval(registryRefreshTimer);
+      registryRefreshTimer = null;
+    }
+    initialized.value = false;
+  };
+
+  const runCommand = (label: string, command: () => Promise<void>): void => {
+    command().catch((error: unknown) => {
+      console.error(`[packs] ${label} failed:`, error);
+    });
+  };
+
+  const fetchRegistry = (): void => {
+    runCommand('fetchRegistry', packService.fetchRegistry);
+  };
+
+  const startRegistryRefresh = (intervalMs = 15_000): void => {
+    fetchRegistry();
+    if (registryRefreshTimer) {
+      return;
+    }
+    registryRefreshTimer = setInterval(fetchRegistry, intervalMs);
+  };
+
+  const stopRegistryRefresh = (): void => {
+    if (!registryRefreshTimer) {
+      return;
+    }
+    clearInterval(registryRefreshTimer);
+    registryRefreshTimer = null;
+  };
+
+  const downloadPack = (packId: string): void => {
+    runCommand(`downloadPack "${packId}"`, () => packService.downloadPack(packId));
+  };
+
+  const uninstallPack = (packId: string): void => {
+    runCommand(`uninstallPack "${packId}"`, () => packService.uninstallPack(packId));
+  };
+
+  const updatePack = (packId: string): void => {
+    runCommand(`updatePack "${packId}"`, () => packService.updatePack(packId));
+  };
+
+  const isGameAvailable = (gameName: string): boolean => {
+    const entry = registry.value?.packs.find((pack) => pack.name === gameName);
+    return entry ? installedPackIds.value.includes(entry.id) : false;
+  };
+
+  const getDownloadState = (packId: string): PackDownloadState =>
+    downloadStates.value[packId] ?? { status: 'idle', progress: 0 };
+
+  const getCharactersByGame = (gameName: string): FightingCharacterOption[] =>
+    charactersByGame.value[gameName] ?? [];
+
+  const getDefaultCharactersByGame = (gameName: string): DefaultCharacterPair | undefined =>
+    defaultCharactersByGame.value[gameName];
+
+  return {
+    registry,
+    installedPackIds,
+    downloadStates,
+    availableUpdates,
+    installedManifests,
+    allGameOptions,
+    updateCount,
+    initialize,
+    dispose,
+    fetchRegistry,
+    startRegistryRefresh,
+    stopRegistryRefresh,
+    downloadPack,
+    uninstallPack,
+    updatePack,
+    isGameAvailable,
+    getDownloadState,
+    getCharactersByGame,
+    getDefaultCharactersByGame,
+    formatBytes,
+    getLocalLogoUrl,
+  };
+});
diff --git a/src/dashboard/stores/players.ts b/src/dashboard/stores/players.ts
index 59ee118..6992e6a 100644
--- a/src/dashboard/stores/players.ts
+++ b/src/dashboard/stores/players.ts
@@ -1,61 +1,36 @@
 import { defineStore } from 'pinia';
 import { computed, ref } from 'vue';
-import { playersReplicant } from '../../nodecg/browser/replicants';
-import type { Schemas } from '../../types';
-import { readStorageSnapshot, syncStateWithReplicant } from './store-sync';
-
-type PlayersMap = Schemas.Players;
-type Player = PlayersMap[string];
+import {
+  normalizePlayer,
+  normalizePlayers,
+  type Player,
+  type PlayersMap,
+} from '../../shared/domain/players/state';
+import { readStorageSnapshot, syncPlayersState } from '../services/replicant-state-service';
 
 const STORAGE_KEY = 'scoreko-dev.players';
 
-const normalizePlayer = (input: unknown): Player => {
-  const candidate = typeof input === 'object' && input !== null ? (input as Record<string, unknown>) : {};
-  return {
-    gamertag: typeof candidate.gamertag === 'string' ? candidate.gamertag : '',
-    name: typeof candidate.name === 'string' ? candidate.name : '',
-    team: typeof candidate.team === 'string' ? candidate.team : '',
-    country: typeof candidate.country === 'string' ? candidate.country : '',
-    twitter: typeof candidate.twitter === 'string' ? candidate.twitter : '',
-  };
-};
-
-const normalizePlayers = (input: unknown): PlayersMap => {
-  if (typeof input !== 'object' || input === null) {
-    return {};
-  }
-  const result: PlayersMap = {};
-  Object.entries(input as Record<string, unknown>).forEach(([id, value]) => {
-    if (!id) {
-      return;
-    }
-    result[id] = normalizePlayer(value);
-  });
-  return result;
-};
-
 export const usePlayersStore = defineStore('players', () => {
   const players = ref<PlayersMap>({});
-  const replicant = playersReplicant;
   const storageSnapshot = readStorageSnapshot(STORAGE_KEY, normalizePlayers);
   if (storageSnapshot) {
     players.value = storageSnapshot;
   }
 
-  syncStateWithReplicant(players, replicant, normalizePlayers, STORAGE_KEY);
+  syncPlayersState(players, STORAGE_KEY);
 
-  const setPlayers = (value: PlayersMap) => {
+  const setPlayers = (value: PlayersMap): void => {
     players.value = normalizePlayers(value);
   };
 
-  const upsertPlayer = (id: string, player: Player) => {
+  const upsertPlayer = (id: string, player: Player): void => {
     players.value = {
       ...players.value,
       [id]: normalizePlayer(player),
     };
   };
 
-  const removePlayer = (id: string) => {
+  const removePlayer = (id: string): void => {
     const next = { ...players.value };
     delete next[id];
     players.value = next;
diff --git a/src/dashboard/stores/scoreboard.ts b/src/dashboard/stores/scoreboard.ts
index d0f9cc9..e9e0d9c 100644
--- a/src/dashboard/stores/scoreboard.ts
+++ b/src/dashboard/stores/scoreboard.ts
@@ -1,107 +1,102 @@
 import { defineStore } from 'pinia';
 import { computed, ref } from 'vue';
-import { scoreboardReplicant } from '../../nodecg/browser/replicants';
-import type { Schemas } from '../../types';
-import { readStorageSnapshot, syncStateWithReplicant } from './store-sync';
-
-type Scoreboard = Schemas.Scoreboard;
+import {
+  adjustScoreboardScore,
+  defaultScoreboard,
+  normalizeScoreboard,
+  resetScoreboardScores,
+  setScoreboardScore,
+  swapScoreboardPlayers,
+  type Scoreboard,
+  type ScoreboardSide,
+} from '../../shared/domain/scoreboard';
+import { readStorageSnapshot, syncScoreboardState } from '../services/replicant-state-service';
 
 const STORAGE_KEY = 'scoreko-dev.scoreboard';
 
-const defaultScoreboard: Scoreboard = {
-  leftPlayerId: '',
-  rightPlayerId: '',
-  leftNameOverride: '',
-  rightNameOverride: '',
-  leftTeamOverride: '',
-  rightTeamOverride: '',
-  leftCountryOverride: '',
-  rightCountryOverride: '',
-  leftCharacter: '',
-  rightCharacter: '',
-  leftScore: 0,
-  rightScore: 0,
-  round: '',
-  game: '',
-};
-
-const normalizeScoreboard = (input: unknown): Scoreboard => {
-  const candidate = typeof input === 'object' && input !== null ? (input as Record<string, unknown>) : {};
-  return {
-    leftPlayerId: typeof candidate.leftPlayerId === 'string' ? candidate.leftPlayerId : '',
-    rightPlayerId: typeof candidate.rightPlayerId === 'string' ? candidate.rightPlayerId : '',
-    leftNameOverride: typeof candidate.leftNameOverride === 'string' ? candidate.leftNameOverride : '',
-    rightNameOverride: typeof candidate.rightNameOverride === 'string' ? candidate.rightNameOverride : '',
-    leftTeamOverride: typeof candidate.leftTeamOverride === 'string' ? candidate.leftTeamOverride : '',
-    rightTeamOverride: typeof candidate.rightTeamOverride === 'string' ? candidate.rightTeamOverride : '',
-    leftCountryOverride: typeof candidate.leftCountryOverride === 'string' ? candidate.leftCountryOverride : '',
-    rightCountryOverride: typeof candidate.rightCountryOverride === 'string' ? candidate.rightCountryOverride : '',
-    leftCharacter: typeof candidate.leftCharacter === 'string' ? candidate.leftCharacter : '',
-    rightCharacter: typeof candidate.rightCharacter === 'string' ? candidate.rightCharacter : '',
-    leftScore: typeof candidate.leftScore === 'number' ? Math.max(0, Math.floor(candidate.leftScore)) : 0,
-    rightScore: typeof candidate.rightScore === 'number' ? Math.max(0, Math.floor(candidate.rightScore)) : 0,
-    round: typeof candidate.round === 'string' ? candidate.round : '',
-    game: typeof candidate.game === 'string' ? candidate.game : '',
-  };
-};
-
 export const useScoreboardStore = defineStore('scoreboard', () => {
   const scoreboard = ref<Scoreboard>({ ...defaultScoreboard });
-  const replicant = scoreboardReplicant;
   const storageSnapshot = readStorageSnapshot(STORAGE_KEY, normalizeScoreboard);
   if (storageSnapshot) {
     scoreboard.value = storageSnapshot;
   }
 
-  syncStateWithReplicant(scoreboard, replicant, normalizeScoreboard, STORAGE_KEY);
+  syncScoreboardState(scoreboard, STORAGE_KEY);
 
-  const setScoreboard = (value: Scoreboard) => {
+  const setScoreboard = (value: Scoreboard): void => {
     scoreboard.value = normalizeScoreboard(value);
   };
 
-  const swapPlayers = () => {
+  const setGame = (value: string): void => {
+    scoreboard.value = { ...scoreboard.value, game: value };
+  };
+
+  const setRound = (value: string): void => {
+    scoreboard.value = { ...scoreboard.value, round: value };
+  };
+
+  const setScore = (side: ScoreboardSide, value: number): void => {
+    scoreboard.value = setScoreboardScore(scoreboard.value, side, value);
+  };
+
+  const adjustScore = (side: ScoreboardSide, delta: number): void => {
+    scoreboard.value = adjustScoreboardScore(scoreboard.value, side, delta);
+  };
+
+  const setSidePlayerId = (side: ScoreboardSide, value: string): void => {
     scoreboard.value = {
       ...scoreboard.value,
-      leftPlayerId: scoreboard.value.rightPlayerId,
-      rightPlayerId: scoreboard.value.leftPlayerId,
-      leftNameOverride: scoreboard.value.rightNameOverride,
-      rightNameOverride: scoreboard.value.leftNameOverride,
-      leftTeamOverride: scoreboard.value.rightTeamOverride,
-      rightTeamOverride: scoreboard.value.leftTeamOverride,
-      leftCountryOverride: scoreboard.value.rightCountryOverride,
-      rightCountryOverride: scoreboard.value.leftCountryOverride,
-      leftCharacter: scoreboard.value.rightCharacter,
-      rightCharacter: scoreboard.value.leftCharacter,
-      leftScore: scoreboard.value.rightScore,
-      rightScore: scoreboard.value.leftScore,
+      [side === 'left' ? 'leftPlayerId' : 'rightPlayerId']: value,
     };
   };
 
-  const resetScores = () => {
+  const setSideNameOverride = (side: ScoreboardSide, value: string): void => {
     scoreboard.value = {
       ...scoreboard.value,
-      leftScore: 0,
-      rightScore: 0,
+      [side === 'left' ? 'leftNameOverride' : 'rightNameOverride']: value,
     };
   };
 
+  const setSideTeamOverride = (side: ScoreboardSide, value: string): void => {
+    scoreboard.value = {
+      ...scoreboard.value,
+      [side === 'left' ? 'leftTeamOverride' : 'rightTeamOverride']: value,
+    };
+  };
+
+  const setSideCountryOverride = (side: ScoreboardSide, value: string): void => {
+    scoreboard.value = {
+      ...scoreboard.value,
+      [side === 'left' ? 'leftCountryOverride' : 'rightCountryOverride']: value,
+    };
+  };
+
+  const setSideCharacter = (side: ScoreboardSide, value: string): void => {
+    scoreboard.value = {
+      ...scoreboard.value,
+      [side === 'left' ? 'leftCharacter' : 'rightCharacter']: value,
+    };
+  };
+
+  const swapPlayers = (): void => {
+    scoreboard.value = swapScoreboardPlayers(scoreboard.value);
+  };
+
+  const resetScores = (): void => {
+    scoreboard.value = resetScoreboardScores(scoreboard.value);
+  };
+
   const leftScore = computed({
     get: () => scoreboard.value.leftScore,
     set: (value: number) => {
-      scoreboard.value = {
-        ...scoreboard.value,
-        leftScore: Math.max(0, Math.floor(value)),
-      };
+      setScore('left', value);
     },
   });
 
   const rightScore = computed({
     get: () => scoreboard.value.rightScore,
     set: (value: number) => {
-      scoreboard.value = {
-        ...scoreboard.value,
-        rightScore: Math.max(0, Math.floor(value)),
-      };
+      setScore('right', value);
     },
   });
 
@@ -110,6 +105,15 @@ export const useScoreboardStore = defineStore('scoreboard', () => {
     leftScore,
     rightScore,
     setScoreboard,
+    setGame,
+    setRound,
+    setScore,
+    adjustScore,
+    setSidePlayerId,
+    setSideNameOverride,
+    setSideTeamOverride,
+    setSideCountryOverride,
+    setSideCharacter,
     swapPlayers,
     resetScores,
   };
diff --git a/src/graphics/commentary/main.vue b/src/graphics/commentary/main.vue
index e184942..2fb28ad 100644
--- a/src/graphics/commentary/main.vue
+++ b/src/graphics/commentary/main.vue
@@ -1,19 +1,11 @@
 <script setup lang="ts">
 import { useHead } from '@unhead/vue';
 import { computed } from 'vue';
-import { commentaryReplicant } from '../../nodecg/browser/replicants';
-import type { Schemas } from '../../types';
+import { useCommentaryReplicatedState } from '../shared/services/replicated-state';
 
 useHead({ title: 'Commentary' });
 
-const defaultCommentary: Schemas.Commentary = {
-  leftCommentator: '',
-  leftCommentatorTwitter: '',
-  rightCommentator: '',
-  rightCommentatorTwitter: '',
-};
-
-const commentary = computed<Schemas.Commentary>(() => commentaryReplicant?.data ?? defaultCommentary);
+const { commentary } = useCommentaryReplicatedState();
 
 const leftCommentator = computed(() => commentary.value.leftCommentator || 'COMMENTATOR 1');
 const rightCommentator = computed(() => commentary.value.rightCommentator || 'COMMENTATOR 2');
diff --git a/src/graphics/scoreboard-2xko/main.vue b/src/graphics/scoreboard-2xko/main.vue
index 79be170..ddd44c4 100644
--- a/src/graphics/scoreboard-2xko/main.vue
+++ b/src/graphics/scoreboard-2xko/main.vue
@@ -1,21 +1,13 @@
 <script setup lang="ts">
 import { useHead } from '@unhead/vue';
 import { computed, nextTick, onBeforeUnmount, ref, watch } from 'vue';
-import { graphicsSettingsReplicant, playersReplicant, scoreboardReplicant } from '../../nodecg/browser/replicants';
+import { useScoreboardReplicatedState } from '../shared/services/replicated-state';
 import { resolveCountryCode } from '../../shared/domain/players/countries';
 import { getCharactersByGame } from '../../shared/fighting-characters';
-import type { Schemas } from '../../types';
 
 useHead({ title: 'Scoreboard 2XKO' });
 
-const defaultScoreboard: Schemas.Scoreboard = {
-  leftPlayerId: '', rightPlayerId: '', leftNameOverride: '', rightNameOverride: '', leftTeamOverride: '', rightTeamOverride: '',
-  leftCountryOverride: '', rightCountryOverride: '', leftCharacter: '', rightCharacter: '', leftScore: 0, rightScore: 0, round: '', game: '',
-};
-
-const players = computed<Schemas.Players>(() => playersReplicant?.data ?? {});
-const scoreboard = computed<Schemas.Scoreboard>(() => scoreboardReplicant?.data ?? defaultScoreboard);
-const scoreboardSkin = computed(() => graphicsSettingsReplicant?.data?.scoreboardSkin ?? 'scoreboard-2xko/main.html');
+const { players, scoreboard, scoreboardSkin } = useScoreboardReplicatedState('scoreboard-2xko/main.html');
 
 watch(
   scoreboardSkin,
diff --git a/src/graphics/scoreboard/main.vue b/src/graphics/scoreboard/main.vue
index e1ba7ff..a16e9dc 100644
--- a/src/graphics/scoreboard/main.vue
+++ b/src/graphics/scoreboard/main.vue
@@ -1,32 +1,12 @@
 <script setup lang="ts">
 import { useHead } from '@unhead/vue';
 import { computed, nextTick, onBeforeUnmount, onMounted, ref, watch } from 'vue';
-import { graphicsSettingsReplicant, playersReplicant, scoreboardReplicant } from '../../nodecg/browser/replicants';
+import { useScoreboardReplicatedState } from '../shared/services/replicated-state';
 import { resolveCountryCode } from '../../shared/domain/players/countries';
-import type { Schemas } from '../../types';
 
 useHead({ title: 'Scoreboard' });
 
-const defaultScoreboard: Schemas.Scoreboard = {
-  leftPlayerId: '',
-  rightPlayerId: '',
-  leftNameOverride: '',
-  rightNameOverride: '',
-  leftTeamOverride: '',
-  rightTeamOverride: '',
-  leftCountryOverride: '',
-  rightCountryOverride: '',
-  leftCharacter: '',
-  rightCharacter: '',
-  leftScore: 0,
-  rightScore: 0,
-  round: '',
-  game: '',
-};
-
-const players = computed<Schemas.Players>(() => playersReplicant?.data ?? {});
-const scoreboard = computed<Schemas.Scoreboard>(() => scoreboardReplicant?.data ?? defaultScoreboard);
-const scoreboardSkin = computed(() => graphicsSettingsReplicant?.data?.scoreboardSkin ?? 'scoreboard/main.html');
+const { players, scoreboard, scoreboardSkin } = useScoreboardReplicatedState('scoreboard/main.html');
 
 watch(
   scoreboardSkin,
diff --git a/src/graphics/shared/services/replicated-state.ts b/src/graphics/shared/services/replicated-state.ts
new file mode 100644
index 0000000..9d2ec6b
--- /dev/null
+++ b/src/graphics/shared/services/replicated-state.ts
@@ -0,0 +1,25 @@
+import { computed } from 'vue';
+import { commentaryReplicant, graphicsSettingsReplicant, playersReplicant, scoreboardReplicant } from '../../../nodecg/browser/replicants';
+import { defaultCommentary } from '../../../shared/domain/commentary';
+import { defaultScoreboard } from '../../../shared/domain/scoreboard';
+import type { Schemas } from '../../../types';
+
+export const useScoreboardReplicatedState = (defaultSkin: string) => {
+  const players = computed<Schemas.Players>(() => playersReplicant?.data ?? {});
+  const scoreboard = computed<Schemas.Scoreboard>(() => scoreboardReplicant?.data ?? defaultScoreboard);
+  const scoreboardSkin = computed(() => graphicsSettingsReplicant?.data?.scoreboardSkin ?? defaultSkin);
+
+  return {
+    players,
+    scoreboard,
+    scoreboardSkin,
+  };
+};
+
+export const useCommentaryReplicatedState = () => {
+  const commentary = computed<Schemas.Commentary>(() => commentaryReplicant?.data ?? defaultCommentary);
+
+  return {
+    commentary,
+  };
+};
diff --git a/src/nodecg/browser/packReplicants.ts b/src/nodecg/browser/packReplicants.ts
index fd2b3ce..93498c3 100644
--- a/src/nodecg/browser/packReplicants.ts
+++ b/src/nodecg/browser/packReplicants.ts
@@ -9,7 +9,7 @@ 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;
+  off(event: 'change', handler: (newVal: T, oldVal?: T) => void): void;
 }
 
 export interface PackBrowserReplicants {
diff --git a/src/shared/domain/commentary/index.ts b/src/shared/domain/commentary/index.ts
new file mode 100644
index 0000000..da88543
--- /dev/null
+++ b/src/shared/domain/commentary/index.ts
@@ -0,0 +1 @@
+export * from './state';
diff --git a/src/shared/domain/commentary/state.ts b/src/shared/domain/commentary/state.ts
new file mode 100644
index 0000000..c8bfd89
--- /dev/null
+++ b/src/shared/domain/commentary/state.ts
@@ -0,0 +1,32 @@
+import type { Schemas } from '../../../types';
+
+export type Commentary = Schemas.Commentary;
+
+export const defaultCommentary: Commentary = {
+  leftCommentator: '',
+  leftCommentatorTwitter: '',
+  rightCommentator: '',
+  rightCommentatorTwitter: '',
+};
+
+const toString = (value: unknown): string => (typeof value === 'string' ? value : '');
+
+export const normalizeCommentary = (input: unknown): Commentary => {
+  const candidate = typeof input === 'object' && input !== null ? (input as Record<string, unknown>) : {};
+  return {
+    leftCommentator: toString(candidate.leftCommentator),
+    leftCommentatorTwitter: toString(candidate.leftCommentatorTwitter),
+    rightCommentator: toString(candidate.rightCommentator),
+    rightCommentatorTwitter: toString(candidate.rightCommentatorTwitter),
+  };
+};
+
+export const swapCommentary = (commentary: Commentary): Commentary => ({
+  leftCommentator: commentary.rightCommentator,
+  leftCommentatorTwitter: commentary.rightCommentatorTwitter,
+  rightCommentator: commentary.leftCommentator,
+  rightCommentatorTwitter: commentary.leftCommentatorTwitter,
+});
+
+export const stripTwitterPrefix = (value: string): string =>
+  value.startsWith('@') ? value.slice(1) : value;
diff --git a/src/shared/domain/graphics/index.ts b/src/shared/domain/graphics/index.ts
new file mode 100644
index 0000000..da88543
--- /dev/null
+++ b/src/shared/domain/graphics/index.ts
@@ -0,0 +1 @@
+export * from './state';
diff --git a/src/shared/domain/graphics/state.ts b/src/shared/domain/graphics/state.ts
new file mode 100644
index 0000000..758ffdd
--- /dev/null
+++ b/src/shared/domain/graphics/state.ts
@@ -0,0 +1,16 @@
+import type { Schemas } from '../../../types';
+
+export type GraphicsSettings = Schemas.GraphicsSettings;
+
+export const defaultGraphicsSettings: GraphicsSettings = {
+  scoreboardSkin: 'scoreboard/main.html',
+};
+
+export const normalizeGraphicsSettings = (input: unknown): GraphicsSettings => {
+  const candidate = typeof input === 'object' && input !== null ? (input as Record<string, unknown>) : {};
+  return {
+    scoreboardSkin: typeof candidate.scoreboardSkin === 'string'
+      ? candidate.scoreboardSkin
+      : defaultGraphicsSettings.scoreboardSkin,
+  };
+};
diff --git a/src/shared/domain/packs/characters.ts b/src/shared/domain/packs/characters.ts
new file mode 100644
index 0000000..65ae367
--- /dev/null
+++ b/src/shared/domain/packs/characters.ts
@@ -0,0 +1,48 @@
+import type { PackManifest } from './types';
+
+export interface FightingCharacterOption {
+  label: string;
+  value: string;
+  image: string;
+  dlc?: boolean;
+}
+
+export interface DefaultCharacterPair {
+  leftCharacter: string;
+  rightCharacter: string;
+}
+
+export const BUNDLED_GAME_NAMES = new Set<string>();
+
+export const buildCharactersForManifest = (manifest: PackManifest): FightingCharacterOption[] =>
+  manifest.characters.map((character) => ({
+    label: character.name,
+    value: character.slug,
+    image: `/packs/${manifest.id}/characters/${character.slug}.png`,
+    dlc: character.dlc ?? false,
+  }));
+
+export const buildCharactersByGame = (
+  manifests: readonly PackManifest[],
+): Record<string, FightingCharacterOption[]> => {
+  const charactersByGame: Record<string, FightingCharacterOption[]> = {};
+  manifests.forEach((manifest) => {
+    charactersByGame[manifest.name] = buildCharactersForManifest(manifest);
+  });
+  return charactersByGame;
+};
+
+export const buildDefaultCharactersByGame = (
+  manifests: readonly PackManifest[],
+): Record<string, DefaultCharacterPair> => {
+  const defaultsByGame: Record<string, DefaultCharacterPair> = {};
+  manifests.forEach((manifest) => {
+    if (manifest.defaultPair) {
+      defaultsByGame[manifest.name] = {
+        leftCharacter: manifest.defaultPair.left,
+        rightCharacter: manifest.defaultPair.right,
+      };
+    }
+  });
+  return defaultsByGame;
+};
diff --git a/src/shared/domain/packs/index.ts b/src/shared/domain/packs/index.ts
index 2acd167..0231b1c 100644
--- a/src/shared/domain/packs/index.ts
+++ b/src/shared/domain/packs/index.ts
@@ -1,2 +1,3 @@
 export * from './config';
+export * from './characters';
 export * from './types';
diff --git a/src/shared/domain/players/state.ts b/src/shared/domain/players/state.ts
new file mode 100644
index 0000000..a73b79e
--- /dev/null
+++ b/src/shared/domain/players/state.ts
@@ -0,0 +1,51 @@
+import type { Schemas } from '../../../types';
+
+export type PlayersMap = Schemas.Players;
+export type Player = PlayersMap[string];
+
+const toString = (value: unknown): string => (typeof value === 'string' ? value : '');
+
+export const normalizePlayer = (input: unknown): Player => {
+  const candidate = typeof input === 'object' && input !== null ? (input as Record<string, unknown>) : {};
+  return {
+    gamertag: toString(candidate.gamertag),
+    name: toString(candidate.name),
+    team: toString(candidate.team),
+    country: toString(candidate.country),
+    twitter: toString(candidate.twitter),
+  };
+};
+
+export const normalizePlayers = (input: unknown): PlayersMap => {
+  if (typeof input !== 'object' || input === null) {
+    return {};
+  }
+
+  const result: PlayersMap = {};
+  Object.entries(input as Record<string, unknown>).forEach(([id, value]) => {
+    if (id) {
+      result[id] = normalizePlayer(value);
+    }
+  });
+  return result;
+};
+
+export const normalizePlayerName = (value: string): string => value.trim().toLowerCase();
+
+export const createPlayerId = (name: string, players: PlayersMap): string => {
+  const base = name
+    .trim()
+    .toLowerCase()
+    .normalize('NFD')
+    .replace(/[^\w\s-]/g, '')
+    .replace(/[\u0300-\u036f]/g, '')
+    .replace(/\s+/g, '-') || 'player';
+
+  let index = 1;
+  let candidate = base;
+  while (players[candidate]) {
+    index += 1;
+    candidate = `${base}-${index}`;
+  }
+  return candidate;
+};
diff --git a/src/shared/domain/scoreboard/index.ts b/src/shared/domain/scoreboard/index.ts
new file mode 100644
index 0000000..da88543
--- /dev/null
+++ b/src/shared/domain/scoreboard/index.ts
@@ -0,0 +1 @@
+export * from './state';
diff --git a/src/shared/domain/scoreboard/state.ts b/src/shared/domain/scoreboard/state.ts
new file mode 100644
index 0000000..699881e
--- /dev/null
+++ b/src/shared/domain/scoreboard/state.ts
@@ -0,0 +1,88 @@
+import type { Schemas } from '../../../types';
+
+export type Scoreboard = Schemas.Scoreboard;
+export type ScoreboardSide = 'left' | 'right';
+
+export const defaultScoreboard: Scoreboard = {
+  leftPlayerId: '',
+  rightPlayerId: '',
+  leftNameOverride: '',
+  rightNameOverride: '',
+  leftTeamOverride: '',
+  rightTeamOverride: '',
+  leftCountryOverride: '',
+  rightCountryOverride: '',
+  leftCharacter: '',
+  rightCharacter: '',
+  leftScore: 0,
+  rightScore: 0,
+  round: '',
+  game: '',
+};
+
+const toString = (value: unknown): string => (typeof value === 'string' ? value : '');
+
+const normalizeScore = (value: unknown): number =>
+  typeof value === 'number' ? Math.max(0, Math.floor(value)) : 0;
+
+export const normalizeScoreboard = (input: unknown): Scoreboard => {
+  const candidate = typeof input === 'object' && input !== null ? (input as Record<string, unknown>) : {};
+  return {
+    leftPlayerId: toString(candidate.leftPlayerId),
+    rightPlayerId: toString(candidate.rightPlayerId),
+    leftNameOverride: toString(candidate.leftNameOverride),
+    rightNameOverride: toString(candidate.rightNameOverride),
+    leftTeamOverride: toString(candidate.leftTeamOverride),
+    rightTeamOverride: toString(candidate.rightTeamOverride),
+    leftCountryOverride: toString(candidate.leftCountryOverride),
+    rightCountryOverride: toString(candidate.rightCountryOverride),
+    leftCharacter: toString(candidate.leftCharacter),
+    rightCharacter: toString(candidate.rightCharacter),
+    leftScore: normalizeScore(candidate.leftScore),
+    rightScore: normalizeScore(candidate.rightScore),
+    round: toString(candidate.round),
+    game: toString(candidate.game),
+  };
+};
+
+export const setScoreboardScore = (
+  scoreboard: Scoreboard,
+  side: ScoreboardSide,
+  value: number,
+): Scoreboard => ({
+  ...scoreboard,
+  [side === 'left' ? 'leftScore' : 'rightScore']: Math.max(0, Math.floor(value)),
+});
+
+export const adjustScoreboardScore = (
+  scoreboard: Scoreboard,
+  side: ScoreboardSide,
+  delta: number,
+): Scoreboard =>
+  setScoreboardScore(
+    scoreboard,
+    side,
+    (side === 'left' ? scoreboard.leftScore : scoreboard.rightScore) + delta,
+  );
+
+export const swapScoreboardPlayers = (scoreboard: Scoreboard): Scoreboard => ({
+  ...scoreboard,
+  leftPlayerId: scoreboard.rightPlayerId,
+  rightPlayerId: scoreboard.leftPlayerId,
+  leftNameOverride: scoreboard.rightNameOverride,
+  rightNameOverride: scoreboard.leftNameOverride,
+  leftTeamOverride: scoreboard.rightTeamOverride,
+  rightTeamOverride: scoreboard.leftTeamOverride,
+  leftCountryOverride: scoreboard.rightCountryOverride,
+  rightCountryOverride: scoreboard.leftCountryOverride,
+  leftCharacter: scoreboard.rightCharacter,
+  rightCharacter: scoreboard.leftCharacter,
+  leftScore: scoreboard.rightScore,
+  rightScore: scoreboard.leftScore,
+});
+
+export const resetScoreboardScores = (scoreboard: Scoreboard): Scoreboard => ({
+  ...scoreboard,
+  leftScore: 0,
+  rightScore: 0,
+});
diff --git a/src/shared/fighting-characters.ts b/src/shared/fighting-characters.ts
index 56b5ecb..f4beb9b 100644
--- a/src/shared/fighting-characters.ts
+++ b/src/shared/fighting-characters.ts
@@ -1,112 +1,12 @@
-// src/shared/fighting-characters.ts
-// ─────────────────────────────────────────────────────────────────────────────
-// Todo el contenido de personajes viene de packs descargados desde Gitea.
-// No hay datos bundled — el proyecto arranca vacío y se rellena en runtime.
-// ─────────────────────────────────────────────────────────────────────────────
+export {
+  BUNDLED_GAME_NAMES,
+  buildCharactersByGame,
+  buildCharactersForManifest,
+  buildDefaultCharactersByGame,
+  type DefaultCharacterPair,
+  type FightingCharacterOption,
+} from './domain/packs/characters';
+import type { DefaultCharacterPair, FightingCharacterOption } from './domain/packs/characters';
 
-import { ref } from 'vue';
-import type { PackManifest } from './domain/packs/types';
-
-export interface FightingCharacterOption {
-  label: string;
-  value: string;
-  image: string;
-  dlc?: boolean;
-}
-
-// ── Runtime registry ──────────────────────────────────────────────────────────
-
-const installedPackCharacters: Record<string, FightingCharacterOption[]> = {};
-const installedPackDefaults: Record<string, { leftCharacter: string; rightCharacter: string }> = {};
-
-/**
- * Incrementado cada vez que se registra o elimina un pack.
- * Los composables se suscriben a este ref para que Vue invalide los computed
- * que dependen de installedPackCharacters (objeto plano, no reactivo).
- */
-export const installedPacksRevision = ref(0);
-
-/**
- * Vacío — ya no hay juegos bundled.
- * Mantenido por compatibilidad con usePackRegistry.
- */
-export const BUNDLED_GAME_NAMES = new Set<string>();
-
-// ── Placeholder SVG ───────────────────────────────────────────────────────────
-
-const toDataUrl = (svg: string): string =>
-  `data:image/svg+xml;charset=utf-8,${encodeURIComponent(svg)}`;
-
-const buildPlaceholder = (game: string, character: string, start: string, end: string): string => {
-  const initials = character
-    .split(/\s+/)
-    .map((p) => p[0])
-    .join('')
-    .slice(0, 2)
-    .toUpperCase();
-
-  const svg = `
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 480 220" role="img" aria-label="${character}">
-  <defs>
-    <linearGradient id="bg" x1="0" y1="0" x2="1" y2="1">
-      <stop offset="0%" stop-color="${start}"/>
-      <stop offset="100%" stop-color="${end}"/>
-    </linearGradient>
-  </defs>
-  <rect width="480" height="220" fill="url(#bg)" rx="18"/>
-  <circle cx="90" cy="110" r="64" fill="rgba(255,255,255,0.13)"/>
-  <text x="90" y="130" text-anchor="middle" fill="#ffffff" font-family="Arial, sans-serif" font-size="56" font-weight="700">${initials}</text>
-  <text x="170" y="96" fill="#e2e8f0" font-family="Arial, sans-serif" font-size="20" font-weight="700">${game}</text>
-  <text x="170" y="145" fill="#ffffff" font-family="Arial, sans-serif" font-size="38" font-weight="700">${character}</text>
-</svg>`.trim();
-
-  return toDataUrl(svg);
-};
-
-// ── Pack registration ─────────────────────────────────────────────────────────
-
-/**
- * Registra un pack instalado para que getCharactersByGame() lo devuelva.
- * Llamado por usePackRegistry cuando carga el manifest.json local de un pack.
- */
-export const registerInstalledPack = (manifest: PackManifest): void => {
-  const { id, name, palette, characters, defaultPair } = manifest;
-
-  installedPackCharacters[name] = characters.map((char) => ({
-    label: char.name,
-    value: char.slug,
-    image: `/packs/${id}/characters/${char.slug}.png`,
-    dlc: char.dlc ?? false,
-    // Fallback inline por si la imagen no se encuentra en disco
-    _placeholder: buildPlaceholder(name, char.name, palette.start, palette.end),
-  }));
-
-  if (defaultPair) {
-    installedPackDefaults[name] = {
-      leftCharacter: defaultPair.left,
-      rightCharacter: defaultPair.right,
-    };
-  }
-
-  installedPacksRevision.value++;
-};
-
-/**
- * Elimina un pack del registro en memoria.
- * Llamado por usePackRegistry cuando el usuario desinstala un pack.
- */
-export const unregisterInstalledPack = (gameName: string): void => {
-  delete installedPackCharacters[gameName];
-  delete installedPackDefaults[gameName];
-  installedPacksRevision.value++;
-};
-
-// ── Public API ────────────────────────────────────────────────────────────────
-
-export const getCharactersByGame = (game: string): FightingCharacterOption[] =>
-  installedPackCharacters[game] ?? [];
-
-export const getDefaultCharactersByGame = (
-  game: string,
-): { leftCharacter: string; rightCharacter: string } | undefined =>
-  installedPackDefaults[game];
+export const getCharactersByGame = (_game?: string): FightingCharacterOption[] => [];
+export const getDefaultCharactersByGame = (_game?: string): DefaultCharacterPair | undefined => undefined;