🚀[Deploy] Release Secure Tools v2.1.0

[maruson08]

Release

• Target: v2.1.0
• Source: v2.1
• Base: main
• Release readiness: GO

Highlights

• Image → Text OCR
• PNG, JPEG, and WebP input
• English, Korean, and English + Korean recognition
• Local-only browser OCR
• Same-origin Tesseract runtime
• Six UI locales
• Cancellation, retry, and race-condition protections

Privacy / Security

• No user-file upload
• No OCR server
• No analytics or telemetry
• No external OCR runtime CDN
• Strict CSP preserved
• User files and OCR text are not persisted by Secure Tools
• Only static model data may be cached by the browser

Verification

• Clean lockfile install completed with no reported vulnerabilities
• Full test suite passed, including six-locale parity and branch-policy coverage
• Production asset build and OCR asset-integrity checks passed
• Real local English, Korean, and combined OCR smoke tests passed
• Privacy, network, CSP, and same-origin runtime checks passed
• Release-hardening QA evidence reviewed
• Prospective main...v2.1 commit range passed with the fixed grandfather boundary
• Pull-request title and v2.1 → main branch-policy validation passed
• Release diff and whitespace checks passed

Release process

This PR only promotes the v2.1.0 release candidate from v2.1 to main.

The v2.1.0 tag and GitHub Release will be created only after this PR is explicitly authorized, merged, and production is verified. Auto-merge is not enabled.