refactor(projman): extract skills and consolidate commands

Major refactoring of projman plugin architecture:

Skills Extraction (17 new files):
- Extracted reusable knowledge from commands and agents into skills/
- branch-security, dependency-management, git-workflow, input-detection
- issue-conventions, lessons-learned, mcp-tools-reference, planning-workflow
- progress-tracking, repo-validation, review-checklist, runaway-detection
- setup-workflows, sprint-approval, task-sizing, test-standards, wiki-conventions

Command Consolidation (17 → 12 commands):
- /setup: consolidates initial-setup, project-init, project-sync (--full/--quick/--sync)
- /debug: consolidates debug-report, debug-review (report/review modes)
- /test: consolidates test-check, test-gen (run/gen modes)
- /sprint-status: absorbs sprint-diagram via --diagram flag

Architecture Cleanup:
- Remove plugin-level mcp-servers/ symlinks (6 plugins)
- Remove plugin README.md files (12 files, ~2000 lines)
- Update all documentation to reflect new command structure
- Fix documentation drift in CONFIGURATION.md, COMMANDS-CHEATSHEET.md

Commands are now thin dispatchers (~20-50 lines) that reference skills.
Agents reference skills for domain knowledge instead of inline content.

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

plugins/projman/commands/setup.md

@@ -0,0 +1,90 @@
+---
+description: Configure projman - full setup, quick project init, or sync after repo move
+---
+
+# Setup
+
+## Skills Required
+
+- skills/mcp-tools-reference.md
+- skills/repo-validation.md
+- skills/setup-workflows.md
+
+## Purpose
+
+Unified setup command for all configuration needs.
+
+**Important:**
+- Uses Bash, Read, Write, AskUserQuestion - NOT MCP tools
+- MCP tools won't work until after setup + session restart
+- Tokens must be entered manually for security
+
+## Invocation
+
+```
+/setup              # Auto-detect appropriate mode
+/setup --full       # Full wizard (MCP + system + project)
+/setup --quick      # Project-only setup
+/setup --sync       # Update after repo move
+```
+
+## Mode Detection
+
+If no argument provided, auto-detect:
+
+1. Check `~/.config/claude/gitea.env`
+   - Missing → **full** mode
+
+2. Check project `.env`
+   - Missing → **quick** mode
+
+3. Compare `.env` with git remote
+   - Mismatch → **sync** mode
+   - Match → offer reconfigure or exit
+
+## Mode: Full
+
+Execute `skills/setup-workflows.md` → Full Setup Workflow
+
+Phases:
+1. Environment validation (Python 3.10+)
+2. MCP server setup (venv + requirements)
+3. System-level config (`~/.config/claude/gitea.env`)
+4. Project-level config (`.env`)
+5. Final validation
+
+## Mode: Quick
+
+Execute `skills/setup-workflows.md` → Quick Setup Workflow
+
+Steps:
+1. Verify system config exists
+2. Verify git repository
+3. Check existing `.env`
+4. Detect org/repo from git remote
+5. Validate via API
+6. Create/update `.env`
+7. Check `.gitignore`
+
+## Mode: Sync
+
+Execute `skills/setup-workflows.md` → Sync Workflow
+
+Steps:
+1. Read current config
+2. Detect git remote
+3. Compare values
+4. Show changes
+5. Validate new values
+6. Update `.env`
+7. Confirm
+
+## Visual Output
+
+```
+╔══════════════════════════════════════════════════════════════════╗
+║  📋 PROJMAN                                                      ║
+║  ⚙️ SETUP                                                        ║
+║  [Mode: Full | Quick | Sync]                                     ║
+╚══════════════════════════════════════════════════════════════════╝
+```