Refactor command YAML headers: replace examples with argument-hint

**Summary:**
Updated all 62 command files in `.claude/commands` directory to improve parameter documentation clarity by replacing `examples` field with descriptive `argument-hint` field.

**Changes:**
- Added/improved `argument-hint` for all commands based on usage patterns
- Removed `examples` field and all example items from YAML headers
- Maintained all other YAML fields (name, description, usage, allowed-tools)
- Deleted obsolete commands: workflow/issue/*, workflow/session/pause.md, workflow/session/switch.md
- Cleaned up temporary analysis files

**Rationale:**
The `argument-hint` field provides clearer, more concise parameter documentation than example lists, improving command discoverability and usability in the Claude Code interface.

**Files Modified:** 62 command files
**Lines Changed:** -1570 insertions, +192 deletions

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

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

.claude/commands/workflow/tools/task-generate-tdd.md

@@ -3,9 +3,6 @@ name: task-generate-tdd
 description: Generate TDD task chains with Red-Green-Refactor dependencies
 usage: /workflow:tools:task-generate-tdd --session <session_id> [--agent]
 argument-hint: "--session WFS-session-id [--agent]"
-examples:
-  - /workflow:tools:task-generate-tdd --session WFS-auth
-  - /workflow:tools:task-generate-tdd --session WFS-auth --agent
 allowed-tools: Read(*), Write(*), Bash(gemini-wrapper:*), TodoWrite(*)
 ---
 

.claude/commands/workflow/tools/tdd-coverage-analysis.md

@@ -3,8 +3,6 @@ name: tdd-coverage-analysis
 description: Analyze test coverage and TDD cycle execution
 usage: /workflow:tools:tdd-coverage-analysis --session <session_id>
 argument-hint: "--session WFS-session-id"
-examples:
-  - /workflow:tools:tdd-coverage-analysis --session WFS-auth
 allowed-tools: Read(*), Write(*), Bash(*)
 ---