Show brief # (id) on /briefs rows so briefs are findable by number

You are being dispatched from flower Brief #108: Show brief # (id) on /briefs rows so briefs are findable by number

Recall pointer:
- Use recall_brief with id 108 for the full folder if you need provenance.

Target:
- project: flower (/Users/mikeferrara/Documents/code/flower)
- branch: flower/108-brief-numbers
- worktree: not specified
- kind: fresh

Current brief spec:
(no spec yet)

This is a direct request, not a fully-specced plan. If it's clear, resolve it. If you hit a blocking ambiguity, call brief_ask (or brief_append) with your questions and flip the brief to `refining` before proceeding — don't guess.

Recent/key trace events:
[1] participant_joined flower-orchestrator: (no body)
[2] note_added flower-orchestrator: Operator (2026-07-03): agents constantly refer to briefs by their number (#123), but there's no way to find a brief by number on /briefs. Add a visible brief-# indicator to each brief row.

## Item
- On the /briefs list (resources/views/livewire/briefs/index.blade.php), show each brief's numeric id on its row — a subtle "#123" chip/prefix near the title, bloom style (mono, muted, like the row metadata). Easy to scan and match to the numbers agents cite.
- The id is already on the brief model/data — this is a display-only change.
- Optional (not required): make the # click-to-copy or an anchor. Just the visible number is the ask.

## Scope / constraints
- File: briefs/index.blade.php (+ the Livewire component only if needed — id is already available). Disjoint from #96 (detail view) and roster work.
- bloom styling; keep `php artisan test` green; `./vendor/bin/pint`. Commit trailer `Brief: #<this-id>`. Tiny.
[3] status_change flower-orchestrator: (no body)

Recommended linked context:
{
    "todos": [],
    "scratchpads": []
}

Execution notes:
- Treat the brief as the source of truth.
- Keep work scoped to this dispatch request.
- Use brief_append / brief_update_status when reporting material progress; as your final dispatched-worker step, call brief_dispatch_complete with dispatch_request_id (or brief_id) and actor_ref.
- Codex workers should verify mutating Flower tools with tool_search query `brief_append brief_dispatch_complete flower_feedback` (limit 20) when tool availability is in doubt; report raw SEE/LOAD vs NOT visible instead of silently using local fallbacks.
- Add a git commit trailer `Brief: #108` to every commit for this brief so flower can exact-link commits back to the brief.