feat(install-ai): create top-level inbox/ on bootstrap

install-ai now creates a top-level inbox/ with a .gitkeep in every project it bootstraps. inbox-send treats a project as a messaging target only when it has both a .ai/ marker and a top-level inbox/, so before this a freshly bootstrapped project couldn't receive cross-project handoffs until the inbox was made by hand.

The directory is created in both track and gitignore modes, since inbox/ is a project-root convention independent of whether .ai/ is tracked. The step is idempotent, so a project that already has an inbox keeps its contents.

1 files changed, 8 insertions, 0 deletions

diff --git a/scripts/install-ai.sh b/scripts/install-ai.sh
index 8993f0d..a5b38a8 100755
--- a/scripts/install-ai.sh
+++ b/scripts/install-ai.sh
@@ -119,6 +119,13 @@ mkdir -p "$project/.ai/sessions"
 mkdir -p "$project/.ai/references"
 mkdir -p "$project/.ai/retrospectives"
 
+# Top-level inbox/ — the cross-project messaging target (inbox-send needs a
+# .ai/ marker AND a top-level inbox/). Created in both track and gitignore
+# modes since inbox/ is a project-root convention independent of .ai/
+# tracking. Idempotent: a pre-existing inbox/ and its contents are preserved.
+mkdir -p "$project/inbox"
+touch "$project/inbox/.gitkeep"
+
 # Rsync canonical content (everything except notes.org, which gets templated).
 rsync -a "$CANONICAL/protocols.org"     "$project/.ai/protocols.org"
 rsync -a "$CANONICAL/someday-maybe.org" "$project/.ai/someday-maybe.org"
@@ -159,6 +166,7 @@ echo
 echo "  project:   $project"
 echo "  tracking:  ${track_mode:-not-a-git-repo}"
 echo "  notes.org: project=$project_name, date=$today"
+echo "  inbox/:    created (inbox-send target)"
 echo
 echo "Next steps:"
 echo "  - Add a language bundle:  make install-lang PROJECT=$project"