fix(win32): path handling

[Hona]

~75% of this PR is test code

• Add @/util/path module that normalizes all paths to POSIX format (/) on Windows
• Replace native path imports across 126 files
• Enable full CI test suite on Windows (was previously skipped)
• Handle Git Bash/MSYS paths (/c/Users/... → C:/Users/...)
• Add --path-separator=/ to ripgrep for consistent output

From the new architecture tests to help force pit of success down the line:

// Canonical rule: paths are POSIX/Bash-compatible everywhere.
// Why: Windows backslashes caused
// - UI file search/filter mismatches (client query used "\" while indexed paths used "/")
// - server/client path comparisons to fail (drive/UNC edge cases)
// - bash tool arg parsing to mis-handle paths ("\" is an escape in bash)
// Enforcement via import boundaries:
// - opencode/src must use @/util/path (Node wrapper + /tmp mapping)
// - app/ui/web/sdk/desktop/plugin must use @opencode-ai/util/path (browser-safe)
// - native path/node:path imports are disallowed everywhere

For me to manually test each one by one:

Fixes

Core Path Normalization

• Fixes LSP fails on Windows due to path mismatch errors #11045
  • test/lsp/document-symbol-paths.test.ts → "windows: converts file:// URI to drive-letter path"
  • test/tool/diagnostics-paths.test.ts → "accepts posix diagnostics keys", "windows: accepts canonical diagnostics keys"
• Fixes Glob tool fails on Windows MSYS systems / git bash #11044
  • test/tool/glob-paths.test.ts → "windows: accepts MSYS-style absolute search paths"
  • test/tool/grep-paths.test.ts → "windows: accepts MSYS-style absolute search paths"
  • test/util/path.test.ts → "converts Git Bash / MSYS paths", "normalize() converts MSYS roots"
• Fixes Segfault on Windows git bash (msys) when using bash tool with cwd #11043
  • test/tool/bash.test.ts → "resolves relative workdir against Instance.directory", "throws on invalid workdir"
  • test/server/pty.test.ts → "throws for invalid cwd"
  • test/tool/bash-paths.test.ts → "converts MSYS paths to drive-letter posix", "preserves UNC shares"
• Fixes External directory permission does not work on Windows #11042
  • test/tool/external-directory.test.ts → "windows: normalizes MSYS-style absolute targets"
  • test/permission/next.test.ts → "evaluate - matches stored backslash patterns", "evaluate - matches case-insensitively"
• Fixes Path Display Chaos on Windows #11827
  • test/util/path.test.ts → "normalizes standard paths", "joins with forward slashes", "resolve() output contains no backslashes", "handles mixed slashes"
  • test/util/no-native-path-imports.test.ts → "repo source avoids native path imports"
  • test/worktree/worktree-paths.test.ts → "remove matches worktrees case-insensitively", "reset blocks primary workspace case-insensitively"
• Fixes Windows: Git Bash auto-detection derives invalid bash.exe path #10871
  • test/tool/bash-paths.test.ts → "converts MSYS paths to drive-letter posix"
  • test/util/path.test.ts → "converts Git Bash / MSYS paths"
• Fixes bash tool: external_directory prompt skipped when realpath is missing #10872
  • test/tool/bash.test.ts → "asks for external_directory permission even when PATH is broken"
• Fixes [BUG] TUI session_diff tracking not working on Windows - files remain empty #10716
  • test/server/session-list.test.ts → "filters by directory with trailing separator"
  • test/project/instance-paths.test.ts → "canonicalizes short and long paths to same directory"
• Fixes Bug: permission pathing crossplatform #7279
  • test/permission/next.test.ts → "fromConfig - normalizes windows-style backslashes for path permissions", "fromConfig - normalizes MSYS roots for path permissions", "evaluate - matches stored backslash patterns for path permissions", "evaluate - matches case-insensitively for path permissions"
• Fixes Enter_Plan tool cannot edit windows url pathed files. #8567
  • test/tool/edit-paths.test.ts → "windows: accepts MSYS-style absolute file paths"
  • test/tool/write-paths.test.ts → "windows: accepts MSYS-style absolute file paths"
  • test/tool/multiedit-paths.test.ts → "windows: accepts MSYS-style absolute file paths"

LSP & Ripgrep

• Fixes lsp_tools_show_incorrect_status_on_Windows #11400
  • test/lsp/document-symbol-paths.test.ts → "windows: converts file:// URI to drive-letter path"
  • test/lsp/index.test.ts → "skips servers with invalid roots"
  • test/tool/diagnostics-paths.test.ts → "accepts posix diagnostics keys", "windows: accepts canonical diagnostics keys"
• Fixes OpenCode Desktop Windows ripgrep always fail #5727
  • test/tool/grep-paths.test.ts → "windows: accepts MSYS-style absolute search paths"
  • test/file/ripgrep.test.ts (updated with toPosix)

Glob/File Operations

• Fixes file path globs aren't properly parsed in the config instructions field #11317
  • test/config/config.test.ts → "windows: handles file inclusion substitution with MSYS absolute paths"
  • test/util/filesystem.test.ts → "globUp() returns posix absolute paths on Windows"
• Fixes [Bug] Global commands/ directory not recognized on Windows, only command/ works #9335
  • test/config/config.test.ts → "windows: loads commands when instance directory is MSYS path"
• Fixes Windows: Preparing apply_patch... Error: apply_patch verification failed: F #11687
  • test/tool/diagnostics-paths.test.ts → "accepts posix diagnostics keys", "windows: accepts canonical diagnostics keys"
  • test/tool/edit-paths.test.ts → "windows: accepts MSYS-style absolute file paths"
• Fixes Windows apply_patch fails #10360
  • test/util/path.test.ts → "windows: converts extended-length drive paths", "windows: converts extended-length UNC paths"
  • test/tool/bash-paths.test.ts → "never returns backslashes"

Permission/Security

• Fixes Path traversal vulnerability via symlinks and cross-drive paths #8313
  • test/file/path-traversal.test.ts → "windows: blocks cross-drive paths", "windows: treats UNC shares as distinct roots"
• Fixes Permission check for tool-output directory never matches, causes hang in headless mode #7876
  • test/permission/next.test.ts → "fromConfig - normalizes windows-style backslashes for path permissions", "fromConfig - normalizes MSYS roots for path permissions", "evaluate - matches stored backslash patterns for path permissions", "evaluate - matches case-insensitively for path permissions"

---

New Test Files Added (16)

• test/lsp/document-symbol-paths.test.ts
• test/lsp/index.test.ts
• test/project/instance-paths.test.ts
• test/server/pty.test.ts
• test/session/prompt.test.ts
• test/tool/bash-paths.test.ts
• test/tool/diagnostics-paths.test.ts
• test/tool/edit-paths.test.ts
• test/tool/glob-paths.test.ts
• test/tool/grep-paths.test.ts
• test/tool/lsp-paths.test.ts
• test/tool/multiedit-paths.test.ts
• test/tool/write-paths.test.ts
• test/util/no-native-path-imports.test.ts
• test/util/path.test.ts
• test/worktree/worktree-paths.test.ts

[github-actions]

Hey! Your PR title ignore doesn't follow conventional commit format.

Please update it to start with one of:

• feat: or feat(scope): new feature
• fix: or fix(scope): bug fix
• docs: or docs(scope): documentation changes
• chore: or chore(scope): maintenance tasks
• refactor: or refactor(scope): code refactoring
• test: or test(scope): adding or updating tests

Where scope is the package name (e.g., app, desktop, opencode).

See CONTRIBUTING.md for details.

[github-actions]

The following comment was made by an LLM, it may be inaccurate:

I can see the PR file, but the title and description are both just "ignore", which doesn't provide meaningful keywords to search for duplicates.

Could you provide the actual PR title and description? This will help me search for potentially related or duplicate PRs effectively.

[github-actions]

Thanks for your contribution!

This PR doesn't have a linked issue. All PRs must reference an existing issue.

Please:

1. Open an issue describing the bug/feature (if one doesn't exist)
2. Add Fixes #<number> or Closes #<number> to this PR description

See CONTRIBUTING.md for details.