fix(hookify): support phase-qualified events, absolute paths, and NotebookEdit

[Tarun-joy]

Summary

• Fix phase-qualified events (pre-file, post-file, pre-bash, post-bash) being silently dropped due to exact string matching in config_loader.py
• Use CLAUDE_PROJECT_DIR env var for rule file discovery instead of relative paths (fixes breakage in worktrees and subagents)
• Add NotebookEdit to file event tool matching in pretooluse.py and posttooluse.py

Problem

Rules with event: post-file never fire because config_loader.py:221 compares 'post-file' != 'file' and filters them out. Users get no error — rules are silently ignored. This affects any hookify user who uses phase-qualified events.

Similarly, load_rules() uses os.path.join('.claude', 'hookify.*.local.md') which fails when the hook runs from a non-project-root working directory (common in worktrees and subagent contexts).

Changes

• config_loader.py: Added phase parameter to load_rules(), parse phase prefix from event strings, use CLAUDE_PROJECT_DIR for absolute paths
• pretooluse.py: Pass phase='pre', add NotebookEdit to file event tools, fix import path
• posttooluse.py: Pass phase='post', add NotebookEdit to file event tools, fix import path

Test

Create .claude/hookify.test.local.md:

---
name: test-post-edit
enabled: true
event: post-file
action: warn
tool_matcher: 'Edit|Write'
conditions:
  - field: file_path
    operator: regex_match
    pattern: \.tsx?$
---
Post-edit reminder showing.

Edit any .ts file — the message should appear after the edit completes.