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>

WORKFLOW_DIAGRAMS.md

@@ -512,15 +512,13 @@ graph TD
 graph LR
     subgraph "Session Management"
         WFS_START["/workflow:session:start"]
-        WFS_PAUSE["/workflow:session:pause"]
         WFS_RESUME["/workflow:session:resume"]
-        WFS_SWITCH["/workflow:session:switch"]
         WFS_LIST["/workflow:session:list"]
+        WFS_COMPLETE["/workflow:session:complete"]
 
-        WFS_START --> WFS_PAUSE
-        WFS_PAUSE --> WFS_RESUME
-        WFS_RESUME --> WFS_SWITCH
-        WFS_SWITCH --> WFS_LIST
+        WFS_START --> WFS_LIST
+        WFS_LIST --> WFS_RESUME
+        WFS_RESUME --> WFS_COMPLETE
     end
 
     subgraph "Planning Phase"
@@ -554,7 +552,6 @@ graph LR
     WFS_START --> WF_BRAINSTORM
     WF_PLAN --> WF_EXECUTE
     WF_EXECUTE --> TASK_CREATE
-    WF_REVIEW --> WFS_PAUSE
 ```
 
 ## 11. Planning Method Selection Flow