fix: detect absolute rtk path in Claude hook settings

[TaKO8Ki]

Fixes #2884

Summary

• recognize Claude hook commands where rtk is configured with an absolute path

Test plan

• I prepared the following settings.json and confirmed that this implementation works as expected in my local environment.

{
  "hooks": {
      "PreToolUse": [{
        "matcher": "Bash",
        "hooks": [{
          "type": "command",
          "command": "/opt/homebrew/bin/rtk hook claude",
          "timeout": 5
        }]
      }]
   }
}

• cargo fmt --all && cargo clippy --all-targets && cargo test
• Manual testing: rtk <command> output inspected

Important: All PRs must target the develop branch (not master).
See CONTRIBUTING.md for details.

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[aeppling]

Hey @TaKO8Ki

Thanks for addressing this issue
A few observations:

src/hooks/init.rs (remove_hook_from_json) still uses exact match

if command.contains(REWRITE_HOOK_FILE) || command == CLAUDE_HOOK_COMMAND 

should use your is_claude_hook_command

Your coding in constant.rs this file was dedicated to pure constant, just a nit but to keep it clean it may belong to a more proper file

I tested code locally it correctly fix the issue

[TaKO8Ki]

@aeppling Hi. Thank you for the review. I have fixed remove_hook_from_json and moved is_claude_hook_command from constant.rs into mod.rs. Please let me know if it's better to create a new module.