Move AI agents template to Global and scope default ignores

Keep only documented local/high-churn agent artifacts active by default, preserving common shared instruction/config files as commented opt-in examples

Agents.gitignore

@@ -1,52 +0,0 @@
-# AI Agents / Assistants
-AGENTS.md
-GEMINI.md
-WARP.md
-CRUSH.md
-.warp/
-.crush/
-.codeium/
-.deepseek/
-.amazon-codewhisperer/
-
-# Cursor AI (VS Code fork)
-.cursorrules
-.cursor/
-.cursor.json
-.cursor-settings.yaml
-
-# Tabnine AI - per official docs
-.tabnineignore
-.tabnine/
-
-# Continue.dev (Open source AI assistant)
-.continue/
-.continuerc.json
-
-# Aider AI (Terminal-based)
-.aiderignore
-
-# Qwen Code CLI
-QWEN.md
-
-# Claude code
-.claude/
-
-# (purely optional) Gemini settings folder
-.gemini/
-
-# Cline AI Assistant (trending, user configs similar to Cursor/Continue)
-.cline/
-.clinerules
-cline.json
-
-# GitHub Copilot - does not create repo-local files by default
-# .github/copilot-instructions.md
-
-# Windsurf Editor (Agentic IDE) - usually intentional project configs
-# .windsurfrules
-# .windsurf/
-
-# Replit AI Development - usually intentional project configs
-# .replit
-# replit.nix

Global/Agents.gitignore

@@ -0,0 +1,65 @@
+# AI agents and assistants
+#
+# Some common agent instruction and project configuration files are listed
+# below as commented-out examples. They are often intentionally committed and
+# shared with a team, so only uncomment them if they are local-only in your
+# project.
+
+# AGENTS.md
+# GEMINI.md
+# WARP.md
+# CRUSH.md
+# QWEN.md
+
+# Aider
+.aider.input.history
+.aider.chat.history.md
+.aider.llm.history
+.aider.tags.cache.v*
+# .aiderignore
+
+# Claude Code
+.claude/*.local.json
+.claude/**/*.log
+CLAUDE.local.md
+# .claude/
+
+# Gemini CLI
+gemini-debug.log
+.gemini-clipboard/
+# .gemini/
+
+# Cursor AI
+# .cursorrules
+# .cursor/
+# .cursor.json
+# .cursor-settings.yaml
+
+# Continue
+# .continue/
+# .continuerc.json
+
+# Cline
+# .cline/
+# .clinerules
+# cline.json
+
+# Other agent/editor project config
+# .warp/
+# .crush/
+# .codeium/
+# .deepseek/
+# .amazon-codewhisperer/
+# .tabnineignore
+# .tabnine/
+
+# GitHub Copilot
+# .github/copilot-instructions.md
+
+# Windsurf Editor
+# .windsurfrules
+# .windsurf/
+
+# Replit AI Development
+# .replit
+# replit.nix