Add Localization section to Swift Style Guide

[KatherineInCode]

📔 Objective

This adds a section to discuss our approach to localization in the iOS applications. This is inspired by a recent Community PR where someone was not aware of our approach and needed to make changes on review because of it.

⏰ Reminders before review

• Contributor guidelines followed
• All formatters and local linters executed and passed
• Written new unit and / or integration tests where applicable
• Protected functional changes with optionality (feature flags)
• Used internationalization (i18n) for all UI strings
• CI builds passed
• Communicated to DevOps any deployment requirements
• Updated any necessary documentation (Confluence, contributing docs) or informed the documentation team

🦮 Reviewer guidelines

• 👍 (:+1:) or similar for great changes
• 📝 (:memo:) or ℹ️ (:information_source:) for notes or general info
• ❓ (:question:) for questions
• 🤔 (:thinking:) or 💭 (:thought_balloon:) for more open inquiry that's not quite a confirmed issue and could potentially benefit from discussion
• 🎨 (:art:) for suggestions / improvements
• ❌ (:x:) or ⚠️ (:warning:) for more significant problems or concerns needing attention
• 🌱 (:seedling:) or ♻️ (:recycle:) for future improvements or indications of technical debt
• ⛏ (:pick:) for minor or nitpick changes

[github-actions[bot]]

Checkmarx One – Scan Summary & Details – f9039b0f-45a1-4aba-b0b1-0a08befc42b1

New Issues (7)

Checkmarx found the following issues in this Pull Request

Severity	Issue	Source File / Package	Checkmarx Insight
	Cx7c1ed3d7-0e49	Npm-image-size-1.2.0	details Recommended version: 1.2.1 Description: Image-size is vulnerable to a Denial of Service (DoS) vulnerability when processing specially crafted images. The issue occurs because of an infine... Attack Vector: NETWORK Attack Complexity: LOW ID: Woda2gsqVnpQyEYXQXR7mj7K%2FV39EKAtUf8xWl9u7jc%3D Vulnerable Package
	CVE-2024-53382	Npm-prismjs-1.29.0	details Recommended version: 1.30.0 Description: Prism (aka PrismJS) allows DOM Clobbering (with resultant XSS for untrusted input that contains HTML but does not directly contain JavaScript), bec... Attack Vector: NETWORK Attack Complexity: HIGH ID: fwlizxwqdaoPpQ4d342dhKCKxElL575EmrV6c6NU9DI%3D Vulnerable Package
	CVE-2025-27789	Npm-@babel/runtime-corejs3-7.26.0	details Recommended version: 7.26.10 Description: Babel is a compiler for writing next-generation JavaScript. In affected versions of Babel, to compile regular expressions named capturing groups, B... Attack Vector: LOCAL Attack Complexity: LOW ID: 74Nna63fUeF3gtTWqUkikW%2BCoo%2B4WAjNOU8GFUJBXS0%3D Vulnerable Package
	CVE-2025-27789	Npm-@babel/helpers-7.26.0	details Recommended version: 7.26.10 Description: Babel is a compiler for writing next-generation JavaScript. In affected versions of Babel, to compile regular expressions named capturing groups, B... Attack Vector: LOCAL Attack Complexity: LOW ID: ywGlLgJZknNLVdBiTMimpAQBH6FiPjjoKgXobOU3D%2Fw%3D Vulnerable Package
	CVE-2025-32014	Npm-estree-util-value-to-estree-3.2.1	details Recommended version: 3.3.3 Description: A vulnerability in estree-util-value-to-estree versions prior to 3.3.3 allows an attacker to generate an "ESTree" object that specifies a prototype... Attack Vector: NETWORK Attack Complexity: LOW ID: 82povqtMfq%2FEPt5NgsTkx79RjjbjVBosK9av%2FNEQjIY%3D Vulnerable Package
	CVE-2025-32996	Npm-http-proxy-middleware-2.0.7	details Recommended version: 2.0.9 Description: In http-proxy-middleware v1.3.0 through v2.0.7 and v3.x through v3.0.3, "writeBody" function can be called twice because "else if" is not used. Attack Vector: NETWORK Attack Complexity: HIGH ID: W%2BLRR1%2F6eqx5A%2B7YUaQ4TajfjO7ypS7N44g9xi%2BYuk8%3D Vulnerable Package
	CVE-2025-32997	Npm-http-proxy-middleware-2.0.7	details Recommended version: 2.0.9 Description: In http-proxy-middleware versions 1.3.0 through 2.0.8 and 3.x through 3.0.4, the "fixRequestBody" function proceeds even if "bodyParser" has failed. Attack Vector: NETWORK Attack Complexity: HIGH ID: WYWc0EYNOxrgFwrFI0mEDUCawBIwAopD%2FDGP5Xc%2BYHg%3D Vulnerable Package

[cloudflare-workers-and-pages[bot]]

Deploying contributing-docs with    Cloudflare Pages

Latest commit:	b85af21
Status:	✅  Deploy successful!
Preview URL:	https://343aa1e6.contributing-docs.pages.dev
Branch Preview URL:	https://katherine-swift-localization.contributing-docs.pages.dev

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[KatherineInCode]

In addition to this, could we please also link to https://contributing.bitwarden.com/contributing/#localization-l10n

Good call! I'll make that change when I get a chance