v4.0.2: repository, distribution, and community polish

[man612]

Summary

Polishes the public project surface, contributor workflow, release packaging, and runtime-data handling while preserving the existing diagnosis-first repair model.

What changed

• rewrote the README around quick start, stable TUI, safety boundaries, bilingual onboarding, and contributor entry points
• added programmatic repository artwork plus an Indonesian README and Quick Start
• added Issue Forms, PR template, Code of Conduct, Roadmap, Dependabot, and contributor-focused documentation
• added a stable-release ZIP builder, SHA256 checksum generation, package smoke test, and release asset workflow
• moved runtime logs, language preference, and managed restore state to %LOCALAPPDATA%\WindowsPrinterSharingFix by default
• migrates existing repository-local language preference and managed backup state when possible
• removed tracked language.cfg so changing language no longer dirties a Git clone
• added .editorconfig / .gitattributes for encoding and line-ending hygiene
• CI now covers static safety, diagnosis state integrity, Indonesian localization, runtime workspace migration, and release packaging

Validation

• tests/Validate.ps1 passes
• tests/RuntimeSmoke.ps1 passes; managed-state fingerprint remains unchanged
• tests/LocalizationSmoke.ps1 passes
• tests/WorkspaceSmoke.ps1 passes
• tests/PackageSmoke.ps1 passes
• all GitHub YAML files parse successfully
• relative Markdown links validated with no broken local targets
• Markdown encoding scan is clean
• AST comparison confirms the same 24 Windows-mutating command forms as main

Scope / risk

No new Windows repair primitive or security downgrade is introduced. Stable UI remains the dependency-free Windows PowerShell 5.1 TUI. The experimental OpenTUI work stays separate in draft PR #2.