feat: implement Claudeman - Claude session manager with Ralph Loop

Claudeman manages multiple Claude CLI sessions as subprocesses with:
- Session management (start/stop/list/logs)
- Priority-based task queue with dependency support
- Ralph Loop for autonomous task assignment and completion detection
- Time-aware loops for extended work sessions
- JSON file persistence to ~/.claudeman/state.json

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CLAUDE.md

@@ -0,0 +1,65 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## What This Repository Is
+
+This is a **Claude Code configuration template** containing reusable CLAUDE.md and settings files. Copy these to new projects to bootstrap Claude Code configuration.
+
+### Files to Copy
+- `CLAUDE.md` → project root (then customize the Project Overview section)
+- `.claude/settings.json` → `.claude/settings.json`
+
+---
+
+## Project Overview
+<!-- Customize this section when using in a real project -->
+- **Project Name**: claudeman (Claude Code config template)
+- **Description**: Reusable Claude Code configuration files
+- **Last Updated**: 2026-01-18
+
+---
+
+## Work Principles
+
+### Autonomy
+Full permissions granted via `.claude/settings.json`. Act decisively - read, write, edit, execute freely.
+
+### Git Discipline
+- Commit after every meaningful change - never batch unrelated work
+- Use conventional commits: `feat:`, `fix:`, `docs:`, `refactor:`, `test:`, `chore:`
+- Commit message = what changed + why (not how)
+
+### Planning Mode
+**Automatically enter planning mode** when:
+- Multi-file changes (3+ files)
+- Architectural decisions
+- New feature implementation
+- Refactoring existing functionality
+
+**Skip planning mode** for: single-file fixes, typo corrections, simple config changes.
+
+---
+
+## Ralph Loop (Autonomous Work)
+
+Start with `/ralph-loop`, cancel with `/cancel-ralph`.
+
+Ralph loops enable persistent autonomous work. When active, continue iterating until completion criteria are met.
+
+### Core Behaviors
+1. Work incrementally - one sub-task at a time
+2. Commit after each completion
+3. Self-correct: implement → test → fix failures → lint → fix errors → commit
+4. Only output completion phrase when ALL requirements done AND tests pass
+
+### Time-Aware Loops
+When given a minimum duration, track elapsed time and self-generate additional tasks if primary work completes early. Only output completion phrase when both tasks AND time requirements are met.
+
+---
+
+## Session Log
+
+| Date | Tasks Completed | Files Changed | Notes |
+|------|-----------------|---------------|-------|
+| 2026-01-18 | Improve CLAUDE.md template | CLAUDE.md | Made more concise |