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+---
+epic: 14
+story: 14.5
+title: "Localization Framework"
+status: draft
+---
+
+## Epic 14 — Accessibility & Internationalization
+**Goal:** Make CalcPad usable by everyone regardless of ability, language, or locale.
+
+### Story 14.5: Localization Framework
+
+As a CalcPad user who speaks a language other than English,
+I want the entire UI translated into my language,
+So that I can use CalcPad comfortably in my native language.
+
+**Acceptance Criteria:**
+
+**Given** the macOS native application
+**When** localization is implemented
+**Then** all user-facing strings are defined in `.strings` and `.stringsdict` files
+**And** pluralization rules use `.stringsdict` for correct plural forms per language
+
+**Given** the Windows and web applications
+**When** localization is implemented
+**Then** all user-facing strings are managed through `fluent-rs` (Project Fluent `.ftl` files)
+**And** message references and parameterized strings are used for dynamic content (e.g., "Sheet {$name} saved")
+
+**Given** the localization framework is in place
+**When** all strings are translated
+**Then** the following 8 languages are fully supported: English (EN), French (FR), German (DE), Spanish (ES), Italian (IT), Portuguese-Brazil (PT-BR), Chinese Simplified (ZH), Korean (KO)
+**And** each language has 100% string coverage -- no fallback to English for any UI element
+
+**Given** the user changes their language preference in CalcPad settings
+**When** the change is applied
+**Then** all menus, labels, tooltips, error messages, onboarding text, and template descriptions switch to the selected language
+**And** the change takes effect immediately without restarting the application
+
+**Given** a new language is added in the future
+**When** a developer adds the translation files
+**Then** no code changes are required beyond adding the new `.strings`/`.stringsdict` or `.ftl` file and registering the locale
+**And** the language automatically appears in the language selection dropdown