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/task/replan.md

@@ -2,11 +2,7 @@
 name: replan
 description: Replan individual tasks with detailed user input and change tracking
 usage: /task:replan <task-id> [input]
-argument-hint: task-id ["text"|file.md|ISS-001]
-examples:
-  - /task:replan IMPL-1 "Add OAuth2 authentication support"
-  - /task:replan IMPL-1 updated-specs.md
-  - /task:replan IMPL-1 ISS-001
+argument-hint: "task-id [\"text\"|file.md]"
 ---
 
 # Task Replan Command (/task:replan)
@@ -38,12 +34,6 @@ Replans individual tasks with multiple input options, change tracking, and versi
 ```
 Supports: .md, .txt, .json, .yaml
 
-### Issue Reference
-```bash
-/task:replan IMPL-1 ISS-001
-```
-Loads issue description and requirements
-
 ### Interactive Mode
 ```bash
 /task:replan IMPL-1 --interactive