refactor(config): replace hardcoded .bmad paths with {bmad_folder} placeholder

Remove hardcoded .bmad folder references throughout documentation and source files, replacing them with the configurable {bmad_folder} placeholder. This change enables users to customize the BMAD installation folder name via configuration, improving flexibility and reducing coupling to a specific directory structure.

Changes include:
- Update all documentation to reference {bmad_folder} instead of .bmad
- Remove legacy configuration files from .bmad and .claude directories
- Update workflow.xml and CLI documentation with new placeholder syntax

docs/ide-info/cursor.md

@@ -6,20 +6,20 @@ BMAD agents are installed in `.cursor/rules/bmad/` as MDC rules.
 
 ### How to Use
 
-1. **Reference in Chat**: Use `@bmad/{module}/agents/{agent-name}`
-2. **Include Entire Module**: Use `@bmad/{module}`
-3. **Reference Index**: Use `@bmad/index` for all available agents
+1. **Reference in Chat**: Use `@{bmad_folder}/{module}/agents/{agent-name}`
+2. **Include Entire Module**: Use `@{bmad_folder}/{module}`
+3. **Reference Index**: Use `@{bmad_folder}/index` for all available agents
 
 ### Examples
 
 ```
-@bmad/core/agents/dev - Activate dev agent
-@bmad/bmm/agents/architect - Activate architect agent
-@bmad/core - Include all core agents/tasks
+@{bmad_folder}/core/agents/dev - Activate dev agent
+@{bmad_folder}/bmm/agents/architect - Activate architect agent
+@{bmad_folder}/core - Include all core agents/tasks
 ```
 
 ### Notes
 
 - Rules are Manual type - only loaded when explicitly referenced
 - No automatic context pollution
-- Can combine multiple agents: `@bmad/core/agents/dev @bmad/core/agents/test`
+- Can combine multiple agents: `@{bmad_folder}/core/agents/dev @{bmad_folder}/core/agents/test`