refactor: replace em dashes with hyphens in test files and docs

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/tools/AGENTS.md

@@ -1,4 +1,4 @@
-# src/tools/ — 26 Tools Across 15 Directories
+# src/tools/ - 26 Tools Across 15 Directories
 
 **Generated:** 2026-03-06
 
@@ -38,7 +38,7 @@
 | `background_output` | `createBackgroundOutput` | task_id, block, timeout, full_session, include_thinking, message_limit, since_message_id, thinking_max_chars |
 | `background_cancel` | `createBackgroundCancel` | taskId, all |
 
-### LSP Refactoring (6) — Direct ToolDefinition
+### LSP Refactoring (6) - Direct ToolDefinition
 
 | Tool | Parameters |
 |------|------------|
@@ -81,7 +81,7 @@
 | `interactive_bash` | Direct | tmux_command |
 | `look_at` | `createLookAt` | file_path, image_data, goal |
 
-### Editing (1) — Conditional
+### Editing (1) - Conditional
 
 | Tool | Factory | Parameters |
 |------|---------|------------|