opencode->Claude replacement mangles certain paths still

[eXamadeus]

Description

The system prompt sanitization replaces all non-base path occurrences of opencode (case-insensitive) with Claude. It also does not support Windows-based paths.

Current behavior:

Reference a file called /Users/julian/dev/project/.opencode/foo.txt
Reference a file called /Users/julian/dev/project/opencode/foo.txt
Reference a file called "C:\My Projects\project\My OpenCode\foo.txt"

becomes:

Reference a file called /Users/julian/dev/project/.Claude/foo.txt
Reference a file called /Users/julian/dev/project/opencode/foo.txt
Reference a file called "C:\My Projects\project\My Claude\foo.txt"

Note

The second line is not replaced, because the "prefix" pattern was solved in #39

This causes the model to reference incorrect paths and files when working on projects with directory names that contain "opencode", but don't start with "opencode".

Steps to reproduce

1. Use the plugin with OAuth authentication
2. Open a project path with an ".opencode" directory in it (e.g., ~/projects/test where ~/projects/test/.opencode exists)
3. Place a simple foo.txt file in that directory (~/projects/test/.opencode/foo.txt)
4. Ask the model to reference that file
5. Observe that it uses the mangled path (e.g., ~/projects/test/.Claude/foo.txt)

Expected behavior

File paths should be preserved. The replacement should only affect the product name "OpenCode", not paths containing "opencode".

Proposed fix

Use a negative lookbehind that isn't prefix-specific to exclude path contexts:

.replace(/(?<![\/\\][_.a-zA-Z0-9 ]*)opencode/gi, "Claude")

This preserves ~/projects/test/.opencode/foo.txt while still replacing standalone occurrences.

[NamedIdentity]

I can confirm this has been an active and ongoing, very annoying, problem since at least 1.1.34.

Noticed it at least 17d ago: https://www.reddit.com/r/opencodeCLI/comments/1qhj1e5/comment/o1fldni/