Major v4 framework restructuring and IDE agent improvements

This commit represents a significant milestone in the BMAD-METHOD v4 framework restructuring effort, focusing on cleaning up legacy v3 content and enhancing IDE agent configurations.

Key Changes:

1. Legacy Content Cleanup:
   - Removed entire _old/ directory containing v3 framework content (55 files, ~6900 lines)
   - Deleted deprecated checklists, personas, tasks, and templates from v3
   - Cleaned up obsolete web orchestrator configurations

2. IDE Agent Enhancements:
   - Added new IDE agent configurations for all major roles:
     * analyst.ide.md - Business Analyst agent
     * architect.ide.md - Architecture specialist agent
     * pm.ide.md - Product Manager agent
     * po.ide.md - Product Owner agent
     * devops.ide.md - DevOps/Platform Engineer agent (replacing devops-pe.ide.md)
   - Updated dev.ide.md with improved structure and commands
   - Enhanced sm.ide.md with proper persona naming (Bob)

3. New Persona Definitions:
   - Added missing persona files: dev.md, devops.md, qa.md
   - Standardized persona format across all roles

4. QA Agent Addition:
   - Added qa.yml configuration for Quality Assurance agent

5. IDE Integration Improvements:
   - Added .claude/commands/ directory for Claude Code command definitions
   - Added .cursor/rules/ for Cursor IDE integration
   - Created agent-switcher.ide.md utility for seamless agent switching

6. Command Updates:
   - Renamed /exit command to /exit-agent for clarity and consistency

7. Build System Updates:
   - Minor fixes to web-builder.js for improved bundle generation

This restructuring aligns with the v4 architecture goals of modularity, reusability, and improved developer experience across different IDE environments.

Authored-By: BMad

bmad-core/utils/orchestrator-commands.md

@@ -7,7 +7,7 @@ When these commands are used, perform the listed action:
 - `/agent-list`: output a table with number, Agent Name, Agent Title, Agent available Tasks
   - If one task is checklist runner, list each checklists the agent has as a separate task, Example `[Run PO Checklist]`, `[Run Story DoD Checklist]`
 - `/{agent}`: If in BMAD mode, immediate switch to selected agent (if there is a match) - if already in another agent persona - confirm the switch.
-- `/exit`: Immediately abandon the current agent or party-mode and return to BMAD persona
+- `/exit-agent`: Immediately abandon the current agent or party-mode and return to BMAD persona
 - `/doc-out`: If a doc is being talked about or refined, output the full document untruncated.
 - `/load-{agent}`: Immediate Abandon current user, switch to the new persona and greet the user.
 - `/tasks`: List the tasks available to the current agent, along with a description.