diff --git a/.code/.gitignore b/.code/.gitignore
new file mode 100644
index 00000000000..d6b7ef32c84
--- /dev/null
+++ b/.code/.gitignore
@@ -0,0 +1,2 @@
+*
+!.gitignore
diff --git a/.gitignore b/.gitignore
index d0d0802ead4..95d8220538a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -32,9 +32,28 @@ result
 *~
 *.code-workspace
 
-# cli tools
-.claude/
-.antigravitycli/
+# Local AI/LLM runtime state
+#
+# Every Code writes sensitive local state under .code/: prompts, agent output,
+# Code Bridge subscriptions, Chronicle artifacts, logs, and work caches.
+# Keep only the nested guard file trackable.
+!/.code/
+/.code/*
+!/.code/.gitignore
+
+# Antigravity stores local runtime/session state here.
+/.antigravitycli/
+
+# Claude project config may be intentional. Keep .claude/settings.json,
+# .claude/agents/, and .claude/commands/ visible; ignore local overrides.
+/.claude/settings.local.json
+/.claude/settings.local.*.json
+
+# Aider local history/cache. Keep .aider.conf.yml and .aiderignore visible.
+/.aider.chat.history.md
+/.aider.input.history
+/.aider.llm.history
+/.aider.tags.cache.*/
 
 # Binary symlinks generated by dev-fast builds
 codex-cli/bin/*-darwin
@@ -152,7 +171,6 @@ branches/
 
 # coder directories
 .coder/
-.code/
 *.override.*
 
 # trigger: test non-notes change (no [skip ci])