Initial commit: Claude Code session viewer (Flutter macOS)

A desktop app that parses Claude Code .jsonl session logs and provides
a rich UI for exploring conversations, tool usage, subagents, and token
consumption. Features include project browser with auto-discovery of
~/.claude/projects, conversation timeline with inline subagent expansion,
agents overview, toolbelt chart, and token usage dashboard.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

macos/.gitignore

@@ -0,0 +1,7 @@
+# Flutter-related
+**/Flutter/ephemeral/
+**/Pods/
+
+# Xcode-related
+**/dgph
+**/xcuserdata/