Handle params.json as copyable file instead of symlink

[t0mdavid-m]

Summary

Modified the file handling logic to copy params.json instead of symlinking it, allowing users to modify workspace-specific parameters independently without affecting the original source files.

Key Changes

• Updated _symlink_tree() function to detect params.json and copy it using shutil.copy2() instead of creating a symlink
• Modified change_workspace() function to exclude params.json from symlink creation on Linux systems, falling back to copy behavior instead
• Added documentation comments explaining why params.json receives special handling

Implementation Details

• The changes ensure params.json is copied with metadata preservation (shutil.copy2()) rather than symlinked
• This applies consistently across both the initial workspace setup (_symlink_tree) and workspace switching (change_workspace)
• The logic maintains the existing behavior for all other files while providing independent parameter configuration per workspace

https://claude.ai/code/session_012dUQQTySG19toAR3FH7xme

Summary by CodeRabbit

Bug Fixes

• Configuration files (params.json and .ini) are now copied instead of symlinked when loading demo data and switching workspaces on Linux, enabling independent modification of these configuration files.

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[coderabbitai]

Caution

Review failed

The pull request is closed.

📝 Walkthrough

Walkthrough

Changes to src/common/common.py modify configuration file handling. params.json and .ini files are now copied instead of symlinked in _symlink_tree and related functions, enabling independent modification of these configuration files on Linux environments.

Changes

Cohort / File(s)	Summary
Configuration File Handling src/common/common.py	Modified _symlink_tree, change_workspace, and demo data loading functions to copy params.json and .ini files instead of symlinking them, allowing independent modification of configuration files

Possibly related PRs

• Use symlinks on Linux for demo and example files #318: Directly related as this PR modifies the same Linux symlink behavior introduced in #318, affecting _symlink_tree and workspace config file handling
• Plan demo workspace migration to template #312: Both PRs modify demo workspace loading behavior in src/common/common.py, specifically how files are copied versus symlinked

Poem

🐰 Copying configs with careful paws,
No longer bound by symlink's clause,
Each workspace free to find its way,
Config independence saves the day! ✨

✨ Finishing touches

• 📝 Generate docstrings

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