feat: Add @mosaic/cli-tools package for git operations

New package providing CLI tools that work with both Gitea and GitHub:

Commands:
- mosaic-issue-{create,list,view,assign,edit,close,reopen,comment}
- mosaic-pr-{create,list,view,merge,review,close}
- mosaic-milestone-{create,list,close}

Features:
- Auto-detects platform (Gitea vs GitHub) from git remote
- Unified interface regardless of platform
- Available via `pnpm exec mosaic-*` in monorepo context

Updated docs/claude/orchestrator.md:
- Added CLI Tools section with usage examples
- Updated issue creation to use package commands

This makes Mosaic Stack fully self-contained for orchestration tooling.

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

packages/cli-tools/README.md

@@ -0,0 +1,126 @@
+# @mosaic/cli-tools
+
+CLI tools for Mosaic Stack orchestration - git operations that work with both Gitea and GitHub.
+
+## Overview
+
+These scripts abstract the differences between `tea` (Gitea CLI) and `gh` (GitHub CLI), providing a unified interface for:
+
+- Issue management (create, list, assign, close, comment)
+- Pull request management (create, list, merge, review)
+- Milestone management (create, list, close)
+
+## Installation
+
+The package is part of the Mosaic Stack monorepo. After `pnpm install`, the commands are available in the monorepo context.
+
+```bash
+# From monorepo root
+pnpm install
+
+# Commands available via pnpm exec or npx
+pnpm exec mosaic-issue-create -t "Title" -b "Body"
+```
+
+## Commands
+
+### Issues
+
+| Command                | Description                                 |
+| ---------------------- | ------------------------------------------- |
+| `mosaic-issue-create`  | Create a new issue                          |
+| `mosaic-issue-list`    | List issues (with filters)                  |
+| `mosaic-issue-view`    | View issue details                          |
+| `mosaic-issue-assign`  | Assign issue to user                        |
+| `mosaic-issue-edit`    | Edit issue (title, body, labels, milestone) |
+| `mosaic-issue-close`   | Close an issue                              |
+| `mosaic-issue-reopen`  | Reopen a closed issue                       |
+| `mosaic-issue-comment` | Add comment to issue                        |
+
+### Pull Requests
+
+| Command            | Description           |
+| ------------------ | --------------------- |
+| `mosaic-pr-create` | Create a pull request |
+| `mosaic-pr-list`   | List pull requests    |
+| `mosaic-pr-view`   | View PR details       |
+| `mosaic-pr-merge`  | Merge a pull request  |
+| `mosaic-pr-review` | Review a pull request |
+| `mosaic-pr-close`  | Close a pull request  |
+
+### Milestones
+
+| Command                   | Description        |
+| ------------------------- | ------------------ |
+| `mosaic-milestone-create` | Create a milestone |
+| `mosaic-milestone-list`   | List milestones    |
+| `mosaic-milestone-close`  | Close a milestone  |
+
+## Usage Examples
+
+### Create an issue with milestone
+
+```bash
+mosaic-issue-create \
+  -t "Fix authentication bug" \
+  -b "Users cannot log in when..." \
+  -l "bug,security" \
+  -m "M6-AgentOrchestration"
+```
+
+### List open issues in milestone
+
+```bash
+mosaic-issue-list -s open -m "M6-AgentOrchestration"
+```
+
+### Create a pull request
+
+```bash
+mosaic-pr-create \
+  -t "Fix authentication bug" \
+  -b "Resolves #123" \
+  -B develop \
+  -H fix/auth-bug
+```
+
+### Merge with squash
+
+```bash
+mosaic-pr-merge -n 42 -m squash -d
+```
+
+## Platform Detection
+
+The scripts automatically detect whether you're working with Gitea or GitHub by examining the git remote URL. No configuration needed.
+
+- `git.mosaicstack.dev` → Gitea (uses `tea`)
+- `github.com` → GitHub (uses `gh`)
+
+## Requirements
+
+- **Gitea**: `tea` CLI installed and authenticated
+- **GitHub**: `gh` CLI installed and authenticated
+- **Both**: `git` available in PATH
+
+## For Orchestrators
+
+When using these tools in orchestrator/worker contexts:
+
+```bash
+# In worker prompt, reference via pnpm exec
+pnpm exec mosaic-issue-create -t "Title" -m "Milestone"
+
+# Or add to PATH in orchestrator setup
+export PATH="$PATH:./node_modules/.bin"
+mosaic-issue-create -t "Title" -m "Milestone"
+```
+
+## Development
+
+Scripts are plain bash - edit directly in `bin/`.
+
+```bash
+# Lint with shellcheck (if installed)
+pnpm lint
+```