Prepare Sage 0.13.0 release

[Rigidity]

Summary

• bump Sage application, crate, Apple, OpenAPI, and SDK versions to 0.13.0
• refresh Cargo lockfile and extracted translation catalogs
• keep generated bindings and SQLx metadata synchronized for the release

Test plan

• pnpm prettier:check
• pnpm lint
• cargo fmt --all -- --files-with-diff --check
• cargo clippy --workspace --all-features --all-targets
• cargo test --workspace --all-features
• npm pack --dry-run in packages/sage-app-sdk

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Note

Low Risk
Mechanical version and translation-catalog updates with no application logic changes in the diff.

Overview
Release 0.13.0 — version identifiers move from 0.12.11 to 0.13.0 across the Rust workspace (sage, sage-tauri, and related crates in Cargo.lock), Tauri (tauri.conf.json), iOS bundle metadata (Info.plist, project.yml), and npm packages (sage-app-sdk, sage-system-app-sdk, aligned from 0.1.0 to 0.13.0).

The OpenAPI example on GetVersionResponse is updated to 0.13.0. German locale catalog de-DE/messages.po is refreshed for new/changed UI strings (pluralization, read-only wallet copy, QR/scan helpers, etc.) with obsolete entries marked for translators.

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