Local plugin hooks match but never execute (isLocal: true)

Summary

Local plugins (isLocal: true) have their hooks matched by Claude Code but the hooks are never actually executed. This appears to be the same root cause as #11509, #11939, and #12151.

Environment

• Claude Code version: 2.0.64
• Platform: macOS Darwin 24.6.0
• Plugin installation: Local (isLocal: true in installed_plugins.json)

Steps to Reproduce

1. Create a local plugin with hooks in hooks/hooks.json:

{
  "hooks": {
    "Stop": [
      {
        "hooks": [
          {
            "type": "command",
            "command": "my-plugin hook queue-synthesis",
            "async": true
          }
        ]
      }
    ]
  }
}

1. Install the plugin locally (results in isLocal: true)

1. Run Claude Code and observe debug logs

Expected Behavior

The Stop hook should execute when Claude finishes responding.

Actual Behavior

Debug logs show:

Loaded hooks from standard location for plugin totalrecall: /Users/.../.claude/plugins/cache/totalrecall-local/totalrecall/3.0.5/hooks/hooks.json
Loading hooks from plugin: totalrecall
Getting matching hook commands for Stop with query: undefined
Found 1 hook matchers in settings
Matched 1 unique hooks for query "no match query" (1 before deduplication)

But no execution follows. The command is never run. No process spawned. Manual execution of the same command works perfectly:

echo '{"session_id":"test","transcript_path":"/path/to/transcript.jsonl"}' | my-plugin hook queue-synthesis
# Returns: {"queued":true,"queue_id":1,"message":"Session chunk queued for synthesis"}

Workaround

Moving hooks from the plugin's hooks/hooks.json to the user's ~/.claude/settings.json works:

{
  "hooks": {
    "Stop": [
      {
        "hooks": [
          {
            "type": "command",
            "command": "/absolute/path/to/my-plugin hook queue-synthesis",
            "timeout": 30000
          }
        ]
      }
    ]
  }
}

This confirms the hook configuration is correct - only the plugin hook execution path is broken.

Evidence from installed_plugins.json

"my-plugin@my-plugin-local": {
  "isLocal": true
}

Related Issues

• #10875 - Plugin hooks JSON output not captured (CLOSED)
• #11509 - Local file-based plugin hooks never execute
• #11939 - Local plugin SessionStart hooks don't execute (CLOSED as dup)
• #12151 - Plugin hook output not passed to agent (OPEN)

Impact

This bug completely breaks the hook functionality for any locally-developed plugin, forcing developers to either:

1. Ask users to manually copy hooks to their settings.json
2. Publish to git and install from remote (changes isLocal to false)

Neither is acceptable for local plugin development workflow.