Bench 1: the task board extracted as its own distribution

Everything core from cicero-pas's .task-manager, with instance data
reduced to skeleton: empty stage directories, the task template, empty
local/ scaffolding, and a README covering install (clone into
.task-manager/, vendored on purpose) and update (update.sh replaces core
wholesale; local/ and tasks/ survive).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

manager/local/CLAUDE.md

@@ -0,0 +1,5 @@
+# Project-specific workflow notes
+
+This file is yours — updates never touch manager/local/. Put here what an
+agent or teammate needs that the core doc cannot know: post-merge chores,
+what the driver assumes, what each local command is for.