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>

tasks/task-template.md

@@ -0,0 +1,53 @@
+<!--
+Copy this file into backlog/ as NN-short-kebab-title.md — numbers are
+allocated in creation order and stay with the task for life. The board never
+lists this template (it only reads the stage directories). The **PR:** line
+is added by the board itself when the task reaches review/ with a branch.
+-->
+
+# NN — Imperative title: what changes when this is done
+
+**Status:** Backlog
+**Priority:** Medium — one clause on why it sits at this level
+**Type:** Feature
+
+One paragraph for someone — human or agent — who has the codebase but not
+the conversation: what this task changes, and why it is worth doing.
+
+## Context
+
+What exists today and why it falls short. Point at real places rather than
+describing from memory: packages and modules (`packages/domain/...`), prior
+tasks (`../done/...`), reference documents (`../../reference/...`).
+
+## What to build
+
+The work itself, concrete enough to start on. Name the layers things belong
+in — the repo CLAUDE.md's dependency rules decide where code goes, not
+convenience.
+
+- First piece
+- Second piece
+
+## Acceptance
+
+Observable outcomes, not implementation steps. The repo's definition of done
+(tests pass, `lint-imports` clean, new behaviour covered) applies on top.
+
+- [ ] Something a reviewer can check without reading the diff
+- [ ] Another one
+
+## Open questions
+
+Decisions only the task's author can settle. This section is load-bearing:
+an agent told to start work while anything real sits here will refuse with
+`NOT READY` and send the card back — that is the point. Empty it (or delete
+it) when the task is ready to action.
+
+- None.
+
+## Notes
+
+Freeform: research findings, links, decisions taken along the way. The
+board's relevance checks and PR reviews append their reports below this
+line as the task moves.