refactor: Standardize command naming conventions and remove parent relationships

Updates all command files to use consistent naming without parent field:
- Remove parent field from all command frontmatter
- Standardize name field to use simple names instead of prefixed names
- Fix usage patterns for brainstorm commands to use proper workflow namespace
- Add new medium-project-update.sh script for batch updates

🤖 Generated with [Claude Code](https://claude.ai/code)

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

.claude/commands/workflow/issue/close.md

@@ -1,8 +1,8 @@
 ---
-name: workflow-issue-close
+name: close
 description: Close a completed or obsolete workflow issue
 usage: /workflow:issue:close <issue-id> [reason]
-parent: /workflow:issue
+
 examples:
   - /workflow:issue:close ISS-001
   - /workflow:issue:close ISS-001 "Feature implemented in PR #42"

.claude/commands/workflow/issue/create.md

@@ -1,8 +1,8 @@
 ---
-name: workflow-issue-create
+name: create
 description: Create a new issue or change request
 usage: /workflow:issue:create "issue description"
-parent: /workflow:issue
+
 examples:
   - /workflow:issue:create "Add OAuth2 social login support"
   - /workflow:issue:create "Fix user avatar security vulnerability"

.claude/commands/workflow/issue/list.md

@@ -1,8 +1,7 @@
 ---
-name: workflow-issue-list
+name: list
 description: List and filter workflow issues
 usage: /workflow:issue:list
-parent: /workflow:issue
 examples:
   - /workflow:issue:list
   - /workflow:issue:list --open

.claude/commands/workflow/issue/update.md

@@ -1,8 +1,8 @@
 ---
-name: workflow-issue-update
+name: update
 description: Update an existing workflow issue
 usage: /workflow:issue:update <issue-id> [changes]
-parent: /workflow:issue
+
 examples:
   - /workflow:issue:update ISS-001
   - /workflow:issue:update ISS-001 --priority=critical