Support hook-based mode on Windows (rtk init --global)

[san-tekart]

Summary

rtk init --global on Windows falls back to --claude-md mode with the message:

⚠️  Hook-based mode requires Unix (macOS/Linux).
    Windows: use --claude-md mode for full injection.
    Falling back to --claude-md mode.

However, Claude Code fully supports PreToolUse hooks on Windows (via Git Bash), and rtk rewrite works perfectly on Windows. There is no technical reason to skip hook installation on this platform.

Evidence

rtk rewrite works on Windows

$ rtk rewrite "git status"
rtk git status

$ rtk rewrite "cargo test"
rtk cargo test

$ rtk rewrite "ls -la"
rtk ls -la

Manual hook setup works

I manually created a PreToolUse hook and registered it in ~/.claude/settings.json:

Hook script (~/.claude/hooks/rtk-rewrite.sh):

#!/bin/bash
INPUT=$(cat)
COMMAND=$(echo "$INPUT" | grep -o '"command"[[:space:]]*:[[:space:]]*"[^"]*"' | head -1 | sed 's/.*:[[:space:]]*"//;s/"$//')

if [ -z "$COMMAND" ] || [[ "$COMMAND" == rtk\ * ]]; then
  exit 0
fi

REWRITTEN=$(rtk rewrite "$COMMAND" 2>/dev/null)
if [ $? -ne 0 ] || [ "$REWRITTEN" = "$COMMAND" ]; then
  exit 0
fi

REWRITTEN_ESCAPED=$(echo "$REWRITTEN" | sed 's/\\/\\\\/g; s/"/\\"/g')
cat <<ENDJSON
{"hookSpecificOutput":{"hookEventName":"PreToolUse","permissionDecision":"allow","permissionDecisionReason":"rtk: token-optimized","updatedInput":{"command":"$REWRITTEN_ESCAPED"}}}
ENDJSON
exit 0

settings.json:

{
  "hooks": {
    "PreToolUse": [
      {
        "matcher": "Bash",
        "hooks": [
          {
            "type": "command",
            "command": "\"$HOME/.claude/hooks/rtk-rewrite.sh\""
          }
        ]
      }
    ]
  }
}

This works correctly — Claude Code on Windows uses Git Bash for hook execution.

Request

Please update rtk init --global to support hook-based installation on Windows, since:

1. Claude Code uses Git Bash on Windows — shell scripts work fine
2. rtk rewrite already works on Windows
3. The CLAUDE.md fallback is less effective because Claude Code prefers built-in tools (Read, Grep, Glob) over Bash, and the CLAUDE.md instructions are not guaranteed to be followed by subagents

Environment

• OS: Windows 11 Pro (10.0.26200)
• RTK: v0.27.2
• Claude Code: VSCode extension
• Shell: Git Bash (MINGW64)

[pszymkowiak]

[w] wshm · Automated triage by AI

🔍 Automated Triage

✨ Category	feature
🟡 Priority	medium
🎯 Confidence	95%

Summary

Remove unnecessary Windows platform gate in rtk init --global hook-based mode, since Claude Code uses Git Bash for hook execution and all prerequisites already work on Windows. PR #905 is in progress.

This looks like a simple fix. Only repo maintainers can trigger auto-fix.

---

Triaged automatically by wshm · This is an automated analysis, not a human review.

[MarlonPassos-git]

@san-tekart não sei se estou fazendo alguma coisa errada, porem quando eu faço essa configuração ainda sim os comando de bash não usam o rtk

[iappwebdev]

Same issue here on RTK 0.30.0, Windows 11, Claude Code VSCode extension.

I have a working PreToolUse hook (~/.claude/hooks/rtk-rewrite.sh) registered in settings.json — it works perfectly via Git Bash. But rtk init -g refuses to install/recognize it and every RTK invocation shows:

[rtk] /!\ Hook outdated — run `rtk init -g` to update

rtk init -g --auto-patch just falls back to --claude-md mode and never establishes a baseline hash, so the warning persists on every single command.

Would be great if RTK could either:

• Detect an existing working hook and establish the baseline hash
• Or provide a flag like --force-hook to skip the platform check

For now the warning is purely cosmetic but it adds noise to every tool call.