LSPDFR Manager v3.5.2

This patch release focuses on safer installs, less data loss, and a more useful Library/Profile workflow.

Stability and Safety

Library/config/settings JSON writes now use atomic temp-file replacement to reduce corruption risk during crashes or concurrent saves.
Mod notes now autosave with a short debounce instead of saving on every keystroke, preventing lost notes during refresh/filter/navigation while reducing save churn.
Startup validation now checks AppData writability, GTA V folder existence, GTA5.exe, and minimum free disk space for both AppData and the GTA V drive.
Install failures surface through the existing global UI error banner and the Install tab error panel.
Install registration and library mutations are serialized so install completion, uninstall, enable/disable, and save operations cannot race the library file.
Conflict detection now includes disabled .disabled files on disk, including cases where a disabled file exists outside the current library records.
Pre-install backups now run when AppConfig.AutoBackupOnInstall is enabled.
Install logs are trimmed using AppConfig.MaxInstallLogEntries.

Profiles created from the Profiles tab now snapshot the current enabled/disabled setup instead of creating an empty shell.
Profile apply now correctly handles enabled files and .disabled files, updates library state afterward, and preserves load-order priority metadata.
Added persistent load-order priority to installed mods.
Added Library sorting by load order plus Up/Down controls for selected mods.
Added Undo for bulk enable/disable operations.
Added enabled-mod export to Markdown/Text.
Added persistent Library search history storage.
Disabled mods remain visually distinct with opacity/status/badge treatment and the existing disabled count.

Duplicate mod detection now prompts before install:
- Yes: replace existing duplicate entries.
- No: install as a separate entry.
- Cancel: skip.
Archive detection progress text is clearer while the manager reads and scans dropped archives.
File-conflict prompts include conflicts against disabled installed mods and .disabled files.

JSON, XML, and .meta edits are validated before save.
Source config writes use rollback backups and atomic temp writes where possible.
If a source config save fails, the previous file is restored and the UI shows the failure.

README updated for the current patch release.
Added troubleshooting coverage for install failures, conflicts, GTA crashes, missing mods, and Browse API setup.

dotnet restore passed.
dotnet build --configuration Release passed.
dotnet test --configuration Release --no-build passed: 223 tests.
dotnet publish LSPDFRManager.csproj --configuration Release --no-build passed.