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>

docs/claude/orchestrator.md

@@ -53,6 +53,25 @@ envsubst < docs/templates/orchestrator/orchestrator-learnings.json.template > do
 
 See `docs/templates/README.md` for full documentation.
 
+### CLI Tools
+
+Git operations use `@mosaic/cli-tools` package (auto-detects Gitea vs GitHub):
+
+```bash
+# Issue operations
+pnpm exec mosaic-issue-create -t "Title" -b "Body" -m "Milestone"
+pnpm exec mosaic-issue-list -s open -m "Milestone"
+
+# PR operations
+pnpm exec mosaic-pr-create -t "Title" -b "Body" -B develop
+pnpm exec mosaic-pr-merge -n 42 -m squash -d
+
+# Milestone operations
+pnpm exec mosaic-milestone-create -t "M7-Feature" -d "Description"
+```
+
+See `packages/cli-tools/README.md` for full command reference.
+
 ---
 
 ## Phase 1: Bootstrap
@@ -121,23 +140,25 @@ docs/reports/{report-name}/
 
 ### Step 5: Create Gitea Issues (Phase-Level)
 
-Create ONE issue per phase:
+Create ONE issue per phase using `@mosaic/cli-tools`:
 
 ```bash
-# Use tea directly for Mosaic Stack (Gitea)
-tea issue create \
-  --title "Phase 1: Critical Security Fixes" \
-  --description "## Findings
+# Use mosaic CLI tools (auto-detects Gitea vs GitHub)
+pnpm exec mosaic-issue-create \
+  -t "Phase 1: Critical Security Fixes" \
+  -b "## Findings
 - SEC-API-1: Description
 - SEC-WEB-2: Description
 
 ## Acceptance Criteria
 - [ ] All critical findings remediated
 - [ ] Quality gates passing" \
-  --labels "security" \
-  --milestone "{milestone-name}"
+  -l "security" \
+  -m "{milestone-name}"
 ```
 
+**CLI tools location:** `packages/cli-tools/bin/` - see `packages/cli-tools/README.md` for full documentation.
+
 ### Step 6: Create docs/tasks.md
 
 Create the file with this exact schema: