Homework/04 avalonia - #75

…bust error handling

- Implement listing log files, parsing specified/all log files in parallel, querying parse results
- Normal parse data outputs Call/Request/Internal structured log records via KeyValueVisitor
- Capture abnormal parsing exceptions for malformed log files and return error details
- Add multi-dimensional input verification: invalid directory, illegal menu input, non-existent files
- Global exception interception to avoid program crash with user-friendly prompt messages

…ion demo and robustness test

- Collate dotnet build & launch fixed execution commands for LocalCli
- Sort the complete sequential input flow of functional demonstration with corresponding screenshot marks and standard expected console output
- Write 4 groups of robustness test procedures and corresponding abnormal display effects
- Summarize all terminal input instructions into a unified quick lookup table for reproduction

… them through the visitor pattern

# Conflicts:
#	docs/02-multithreading/report.md

…lyze selected/all/single, view results)