chore: bump version to 1.1.3 and update CHANGELOG

[Copilot]

Description

Aligns version numbers across all configuration files with the existing v1.1.3 tag and backfills missing CHANGELOG entries for v1.1.1, v1.1.2, and v1.1.3.

The v1.1.3 tag was created without updating version strings in the codebase. This PR synchronizes:

• Version fields in package.json, src-tauri/Cargo.toml, src-tauri/tauri.conf.json → 1.1.3
• CHANGELOG entries for three patch releases with proper semantic versioning links

Type of change

• Documentation update
• Code refactoring

How Has This Been Tested?

• Version strings verified across all configuration files
• CHANGELOG format validated against Keep a Changelog spec
• Version comparison links tested

Test Configuration:

• OS: Linux
• COAV Version: 9c3acf3

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have updated the CHANGELOG.md file with my changes

Screenshots (if appropriate):

N/A

Additional Notes

CHANGELOG entries document:

• v1.1.3: Windows build support (MSI/NSIS installers)
• v1.1.2: CI environment fixes (mise rust-toolchain, macOS runner)
• v1.1.1: Native menu i18n, CI/CD improvements, polygon rendering fixes

Original prompt

create v1.1.3 tag

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