…o :report (v1.1.0)

Claude Code always namespaces plugin commands, and bare /cost is a built-in
alias for /usage, so this plugin's command was only ever reachable as
/claude-code-cost:cost (never /cost). Rename the command to :report so the
namespaced form reads cleanly, and add four sibling commands for spend over time:

  /claude-code-cost:report      per project + branch (today / week / month)
  /claude-code-cost:by-day      spend per day, dated, most recent first
  /claude-code-cost:by-week     spend per Monday-based week, dated
  /claude-code-cost:by-month    spend per calendar month, dated
  /claude-code-cost:by-project  per project (branches merged) + last active date

Every command takes an optional [filter] (substring on project/branch) and
--json. cost.mjs now makes a single deduped, point-in-time-priced pass over the
JSONL and each mode aggregates from that one event list. The by-* views read the
raw logs directly because `budgetclaw status` only emits the pre-rolled
today/week/month snapshot with no per-date data; :report keeps the BudgetClaw
integration. Tests extended to cover all new modes (50 checks).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>