Release v1.1.11 updater validation

[sparshsam]

Summary

• bump source version to 1.1.11-dev
• document v1.1.11 as a minimal updater validation release
• no functional app changes beyond the release/version bump

Purpose

This creates a newer GitHub Release so installed v1.1.10 builds can test the installer-based updater path end-to-end.

Verification

• python3 -m py_compile main.py tests/test_updater.py tests/test_reliability.py tools/test_updater_asset_flow.py
• git diff --check
• dependency-free source version check