Remove Go implementation — ship is skills-only nowmain

The skills/ directory fully replaces the old Go CLI. Drop all Go
source, build files, planning docs, and the stale SECURITY.md
(which described the old git-user push-deploy model that no longer
exists). Trim .gitignore to match the new tree.

1 files changed, 4 insertions, 16 deletions

diff --git a/.gitignore b/.gitignore
index a2dd99e..9de1885 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,19 +1,4 @@
-# Binaries
-/ship
-/ship-new
-*.exe
-*.dll
-*.so
-*.dylib
-bin/
-
-# Test binary
-*.test
-
-# Go workspace file
-go.work
-
-# IDE
+# Editors
 .vscode/
 .idea/
 *.swp
@@ -22,3 +7,6 @@ go.work
 
 # Claude local settings
 .claude/
+
+# Syncthing conflict files
+*.sync-conflict-*