Prepare 0.1.1 desktop preview

[YuyangXueEd]

Summary

• Prepare the 0.1.1 desktop preview release across package metadata, Tauri config, README, release notes, and refreshed brand/app icons.
• Add local diagnostics and release polish: hidden Windows console, timestamped log files, latest.log, settings UI for logs, and full-library backup.
• Add AI prompt editing and tag governance flows, including bundled prompt defaults, cleanup/merge suggestions, progress states, cancellation, and stronger provider response handling.
• Improve XHS/media workflows with cancellation, continued detail enrichment, experimental albums/files sync hooks, media preview/download handling, and large-list UI responsiveness.

Code Review Notes

• Rust review used the existing code-review workflow plus the installed actionbook Rust checklists for error handling, concurrency, performance, anti-patterns, and unsafe review.
• No unsafe Rust blocks were introduced.
• Clippy issues found during review were fixed before this PR: redundant schema setup branch, needless Ok(...?), manual char splitting, needless borrow, and &PathBuf API shape.
• A few progress-emitter/collector helpers intentionally keep many arguments because they mirror event payload fields; these now have local clippy allows rather than broad lint suppression.

Validation

• npm run build
• cargo check --manifest-path src-tauri\Cargo.toml
• cargo test --manifest-path src-tauri\Cargo.toml
• cargo clippy --manifest-path src-tauri\Cargo.toml --all-targets -- -D warnings
• cargo fmt --manifest-path src-tauri\Cargo.toml -- --check
• git diff --check
• npm run tauri:build

Release Notes

See RELEASE_NOTES.md for the full v0.1.1 changelog and known limitations.