Refactor CLI to use cyclopts decorators directly

This holy grail of refactoring reduces the code by >150 lines!
We've eliminated the bureaucracy of wrapper functions and now
apply `@app.command` decorators directly to the original functions.

Just like the Knights of Ni demanded a shrubbery, cyclopts demands
clear, typed parameters - and we have delivered! The code is now
cleaner than the Holy Grail's cup after being washed by the
French Taunter.

Key improvements:
- Moved cyclopts imports to top of file (no more silly walks)
- Applied `@app.command` directly to functions (no indirection!)
- Removed 'help' parameter from add() - cyclopts handles it
- Simplified main() from ~200 lines to ~40 lines
- Updated tests for new option naming (--gh-issue not --gh_issue)
- All 28 tests still pass - it's not dead yet!

'Tis but a scratch compared to the original implementation!

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

(with a few human touchups by Greg)

Author: gpshead

.gitignore

@@ -93,3 +93,9 @@ ENV/
 
 # hatch-vcs
 src/*/_version.py
+
+*.bak
+*.swp
+
+CLAUDE.local.md
+.claude/*

pyproject.toml

@@ -30,6 +30,9 @@ classifiers = [
 dynamic = [
   "version",
 ]
+dependencies = [
+  "cyclopts>=3.0.0",
+]
 optional-dependencies.tests = [
   "pyfakefs",
   "pytest",