Simprint 0.2.31 பதிவிறக்கம்

v0.2.31: platform-neutral release orchestration
This release separates GitHub Release ownership from platform-specific builds and simplifies update-note rendering.
Changes included:
- Added a platform-neutral release workflow that creates one draft, waits for platform builds, generates updater manifests, and publishes only after successful completion.
- Converted the Windows workflow into a reusable build and upload workflow that does not create or publish releases.
- Generates latest.json and latest-fixed.json centrally from the complete paginated GitHub Release asset list and downloaded updater signatures.
- Restored complete annotated-tag release notes through the GitHub API instead of relying on the local checkout tag representation.
- Preserved independent embedBootstrapper and fixed-runtime update channels for x64, ARM64, and x86.
- Renamed workflow files and display names without a common tauri prefix so future macOS and Linux workflows follow platform-neutral naming.
- Removed react-markdown, remark-gfm, their transitive dependency chain, and the dedicated Markdown renderer in favor of controlled plain-text release notes.
Expected result:
Release metadata is created once, each platform only owns its build assets, both updater channels are finalized consistently, and failed builds leave an unpublished draft instead of a partial public release.