chore: remove accidentally committed .sidecar and .todos directories (#123)

These are local tool data directories (Sidecar) that should not be
tracked. Added both to .gitignore to prevent future accidents.

Co-authored-by: Claude Opus 4.6 <[email protected]>

.gitignore

@@ -7,6 +7,10 @@
 # Claude Code worktrees
 .claude/worktrees/
 
+# Sidecar tool data
+.sidecar/
+.todos/
+
 target/
 
 # WASM build artifacts (loaded from disk, not bundled)

.todos/command_usage.jsonl

@@ -1 +0,0 @@
-{"ts":"2026-02-12T13:55:06.864688+04:00","cmd":"init","session":"ses_b1bea6","ok":true,"dur_ms":85}

.todos/config.json

@@ -1,7 +0,0 @@
-{
-  "pane_heights": [
-    0.3333333333333333,
-    0.3333333333333333,
-    0.3333333333333333
-  ]
-}