refactor(consent-sdk): split ConsentManager + framework adapters under 500 LOC

Phase 4: extract config defaults, Google Consent Mode helper, and framework
adapter internals into sibling files so every source file is under the
hard cap. Public API surface preserved; all 135 tests green, tsup build +
tsc typecheck clean.

- core/ConsentManager 525 -> 467 LOC (extract config + google helpers)
- react/index 511 LOC -> 199 LOC barrel + components/hooks/context
- vue/index 511 LOC -> 32 LOC barrel + components/composables/context/plugin
- angular/index 509 LOC -> 45 LOC barrel + interface/service/module/templates

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

consent-sdk/src/vue/context.ts

@@ -0,0 +1,31 @@
+/**
+ * Vue consent context — injection key + shape.
+ *
+ * Phase 4: extracted from vue/index.ts.
+ */
+
+import type { InjectionKey, Ref } from 'vue';
+import type { ConsentManager } from '../core/ConsentManager';
+import type {
+  ConsentCategories,
+  ConsentCategory,
+  ConsentState,
+} from '../types';
+
+export interface ConsentContext {
+  manager: Ref<ConsentManager | null>;
+  consent: Ref<ConsentState | null>;
+  isInitialized: Ref<boolean>;
+  isLoading: Ref<boolean>;
+  isBannerVisible: Ref<boolean>;
+  needsConsent: Ref<boolean>;
+  hasConsent: (category: ConsentCategory) => boolean;
+  acceptAll: () => Promise<void>;
+  rejectAll: () => Promise<void>;
+  saveSelection: (categories: Partial<ConsentCategories>) => Promise<void>;
+  showBanner: () => void;
+  hideBanner: () => void;
+  showSettings: () => void;
+}
+
+export const CONSENT_KEY: InjectionKey<ConsentContext> = Symbol('consent');