Improve Dotfiel startup reliability and test coverage

[Unique-Divine]

Improve Dotfile Startup Reliability and Test Coverage

This updates the dotfiles setup around shell startup, CI dependencies, and
config synchronization so the environment is easier to reproduce across local
WSL sessions and GitHub Actions.

Key Changes

1. Add an is_wsl helper with deterministic Bun tests so WSL detection can be
   reused safely and verified without depending on the host machine.

2. Fix the WSL /run/user remount logic in zshrc by gating it to WSL sessions
   and remounting the actual /run/user mount point with exec, which avoids
   just shebang temp-file failures under noexec.

3. Add shell dependency install recipes and wire CI to install the baseline
   tools needed by tests before running just test.

4. Harden Cursor CLI config handling for blank runtime config files and expand
   test coverage for that case.

5. Refresh assorted dotfile ergonomics, including tmux copy-mode settings,
   Neovim inlay hints, zsh shortcuts, and skill sync formatting/readability.

---

Note

Low Risk
Changes are limited to dotfile shell/CI setup; the WSL remount still requires SUDO_PW and only runs when WSL is detected.

Overview
Improves WSL startup reliability and test reproducibility by introducing reusable WSL detection and tightening when the shell remounts /run/user with exec.

Adds is_wsl in bashlib.sh (via WSL_DISTRO_NAME or a microsoft* marker in /proc/version using ripgrep), with bashlib.test.ts exercising those paths through a configurable PROC_VERSION fixture. zshrc now runs the sudo remount only when SUDO_PW is set, is_wsl succeeds, and XDG_RUNTIME_DIR looks like /run/user/*, and remounts /run/user instead of the per-UID path so just shebang temp files under noexec can execute.

CI and local setup gain just i-bash-ci / i-bash apt recipes; the test workflow installs shell deps before bun install. Minor shell tweaks include sharex forwarding args, EPICS and Foundry on PATH in zshenv, and small quoting/format fixes in quick.sh.

^{Reviewed by Cursor Bugbot for commit b8af86a. Configure here.}

[cursor]

Cursor Bugbot has reviewed your changes using default effort and found 1 potential issue.

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^{Reviewed by Cursor Bugbot for commit b8af86a. Configure here.}

[cursor]

Foundry PATH duplicated each setup

Low Severity

Appending Foundry to PATH with export PATH="$PATH:…" inside zshenv re-adds the same directory every time zshenv is sourced. main_bash_setup loads zshenv and runs twice during normal zshrc startup, so each new shell gets duplicate Foundry entries and myrc can stack more.

 

^{Reviewed by Cursor Bugbot for commit b8af86a. Configure here.}