Add file naming convention to CLAUDE.md

Documented rule: ALL new files must be prefixed with hostname
- Format: {hostname}-{description}.md
- Example: sys-apps-git-quick-reference.md
- Exception: agents/ directory (shared across VPS)

Current hostname: sys-apps

This ensures future sessions follow the naming convention automatically.

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

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

CLAUDE.md

@@ -54,10 +54,13 @@ This is a shared repository containing Claude Code agents that can be deployed a
 └── templates/                # Project templates
 ```
 
-**Agent Naming Convention:**
-- Agent files: `agents/{agent-name}.md`
-- Invocation: Match the filename (e.g., "finish-up" agent)
-- Session files: `[HOSTNAME]-session-summary.md`
+**File Naming Convention:**
+- **ALL new files:** `{hostname}-{description}.md` (e.g., `sys-apps-git-quick-reference.md`)
+- Agent files: `agents/{agent-name}.md` (no hostname prefix for shared agents)
+- Session files: `{hostname}-session-summary.md`
+- Documentation files: `{hostname}-{topic}.md`
+
+**Current hostname:** sys-apps (get via `hostname` command)
 
 ### Technical Decisions