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/cli/mode/code-analysis.md

@@ -3,10 +3,6 @@ name: code-analysis
 description: Deep code analysis and debugging using CLI tools with specialized template
 usage: /cli:mode:code-analysis [--tool <codex|gemini|qwen>] [--enhance] [--cd "path"] "analysis target"
 argument-hint: "[--tool codex|gemini|qwen] [--enhance] [--cd path] analysis target"
-examples:
-  - /cli:mode:code-analysis "analyze authentication flow logic"
-  - /cli:mode:code-analysis --tool qwen --enhance "explain data transformation pipeline"
-  - /cli:mode:code-analysis --tool codex --cd "src/core" "trace execution path for user registration"
 allowed-tools: SlashCommand(*), Bash(*)
 ---