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/tdd-verify.md

@@ -2,10 +2,7 @@
 name: tdd-verify
 description: Verify TDD workflow compliance and generate quality report
 usage: /workflow:tdd-verify [session-id]
-argument-hint: "[WFS-session-id]"
-examples:
-  - /workflow:tdd-verify
-  - /workflow:tdd-verify WFS-auth
+argument-hint: "[optional: WFS-session-id]"
 allowed-tools: SlashCommand(*), TodoWrite(*), Read(*), Bash(gemini-wrapper:*)
 ---