Update gitignore patterns and add project instructions for AgentSync

Author: yacosta738

.codex/instructions.md

@@ -0,0 +1 @@
+../.agents/AGENTS.md

.gitignore

@@ -36,54 +36,52 @@ node_modules/
 pnpm-debug.log
 perf_test_data/
 tmp
+.opencode/package-lock.json
 # START AI Agent Symlinks
 .agent/commands
-.agent/commands.bak
+.agent/commands.bak.*
 .agent/rules/
-.agent/rules/instructions.md
-.agent/rules/instructions.md.bak
 .agent/skills
-.agent/skills.bak
+.agent/skills.bak.*
 .agent/skills/
 .agents/skills/*.bak
 .claude/commands
-.claude/commands.bak
+.claude/commands.bak.*
 .claude/commands/
 .claude/skills
-.claude/skills.bak
+.claude/skills.bak.*
 .claude/skills/
+.codex/AGENTS.md
+.codex/AGENTS.md.bak.*
 .codex/commands
-.codex/commands.bak
+.codex/commands.bak.*
 .codex/config.toml
-.codex/instructions.md
-.codex/instructions.md.bak
 .codex/skills
-.codex/skills.bak
+.codex/skills.bak.*
 .gemini/commands
-.gemini/commands.bak
+.gemini/commands.bak.*
 .gemini/commands/
 .gemini/settings.json
 .gemini/skills
-.gemini/skills.bak
+.gemini/skills.bak.*
 .gemini/skills/
 .github/agents
-.github/agents.bak
+.github/agents.bak.*
 .github/copilot-instructions.md
-.github/copilot-instructions.md.bak
+.github/copilot-instructions.md.bak.*
+.mcp.json
 .opencode/command
-.opencode/command.bak
+.opencode/command.bak.*
 .opencode/command/
 .opencode/skills
-.opencode/skills.bak
+.opencode/skills.bak.*
 .opencode/skills/
 .vscode/mcp.json
-/.mcp.json
-/AGENTS.md
-/AGENTS.md.bak
-/CLAUDE.md
-/CLAUDE.md.bak
-/GEMINI.md
-/GEMINI.md.bak
-/opencode.json
+AGENTS.md
+AGENTS.md.bak.*
+CLAUDE.md
+CLAUDE.md.bak.*
+GEMINI.md
+GEMINI.md.bak.*
+opencode.json
 # END AI Agent Symlinks
-.opencode/package-lock.json