chore: fix mise on Windows

[richardthe3rd]

Summary

• ./bin/mise is a Unix-only bootstrap script and does not work on Windows (Git Bash / MINGW64) — AGENTS.md and CLAUDE.md updated to document using system mise instead
• Added windows_default_inline_shell_args = "bash -c" to mise.toml — without this, mise uses cmd /c on Windows which only executes the first line of any multiline task script
• Simplified dev task to a single-line run (avoids a separate mise bug where temp script shebangs get `\r` appended when spawned from a native Windows process)
• Added [prepare.flutter-deps] so flutter pub get runs automatically when pubspec.yaml changes, with outputs set so it skips when already up-to-date — removes the need for a manual install task
• Added .gitattributes forcing LF for *.toml and *.sh — CRLF in TOML breaks the windows_default_inline_shell_args setting and CRLF in shell scripts breaks shebangs
• Added flutter-dev.pid to .gitignore

Test plan

• On macOS/Linux: `./bin/mise run test` and `./bin/mise run analyze` still pass
• On Windows: `mise run test` and `mise run analyze` pass
• On Windows: `MISE_ENV=dev mise run dev` starts the Flutter dev server (all task lines execute)
• On Windows: `flutter pub get` runs automatically on first `mise run` after a fresh checkout, but is skipped on subsequent runs when `pubspec.yaml` is unchanged

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[github-actions]

LCOV of commit 77f7251 during CI #51

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[codecov]

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[Copilot]

Pull request overview

This PR improves cross-platform developer tooling by making mise tasks work reliably on Windows while keeping the existing macOS/Linux workflow intact.

Changes:

• Configure mise to use bash for inline task execution on Windows and simplify the dev task to avoid multiline-script issues.
• Replace the manual dependency install task with an automatic prepare step that runs flutter pub get when pubspec.yaml changes.
• Update agent/docs guidance for Windows usage, add LF-enforcing .gitattributes, and ignore a Flutter dev PID file.

Reviewed changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
mise.toml	Adds Windows inline shell settings and an automatic flutter pub get prepare step.
mise.dev.toml	Simplifies the dev task to a single-line command.
AGENTS.md	Documents Windows usage and updates dependency guidance to mise prepare.
CLAUDE.md	Updates guidance to use system mise on Windows instead of ./bin/mise.
.gitattributes	Forces LF line endings for .toml/.sh to avoid Windows CRLF issues.
.gitignore	Ignores flutter-dev.pid.

[Copilot]

windows_default_inline_shell_args = "bash -c" makes all inline task scripts on Windows depend on bash being available on PATH. If someone runs mise from PowerShell/cmd without Git Bash/WSL installed, tasks will fail immediately. Consider either documenting the bash prerequisite for Windows contributors or switching the Windows inline shell to something guaranteed (e.g. PowerShell).

Suggested change

	# Use bash for inline task scripts on Windows (default is cmd /c which only runs one line)
	windows_default_inline_shell_args = "bash -c"
	# Use PowerShell for inline task scripts on Windows (default is cmd /c which only runs one line)
	windows_default_inline_shell_args = "powershell -NoProfile -Command"

[Copilot]

The docs now say flutter pub get runs automatically via mise prepare, but this file still lists the base tasks as including an install task. Since mise.toml removed [tasks.install], please update the “Available: …” list to remove install (or reintroduce the task) so the documentation matches the actual task set.

[Copilot]

This section suggests Windows users can run tasks from PowerShell, but mise.toml configures Windows inline task scripts to run via bash -c. That will only work from PowerShell if bash is installed and on PATH (e.g. via Git for Windows). Please clarify the prerequisite (or adjust the guidance) to avoid “bash not found” failures.

[github-actions]

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