Unblocked Dependabot across repos

Maintenance sweep

• Unblocked Dependabot in three Ruby repos by refreshing Gemfile.lock to bump parallel from 1.28.0 → 2.1.0. Dependabot had been crashing on refresh due to the stale 1.x lockfile.
• These got merged:
  • irasutoya: chore(deps): refresh Gemfile.lock to unblock Dependabot
  • irasutoya-cli: chore(deps): refresh Gemfile.lock to unblock Dependabot
  • bitflyer: chore(deps): refresh Gemfile.lock to unblock Dependabot
• Spun up short-lived fix branches and cleaned them up after the merges. Tiny, necessary janitor work.

Reviews & cleanup

• Approved PR #892 on cycle-flyer. Kept things moving.
• Branch tidy across the repos; main stayed clean.

Social

• Posted on Bluesky about an fMRI study where childhood images reduced pain perception during heat stimulus, and the idea that nostalgia needs specific triggers (diary entries > generic cues). Got 1 repost, no likes. Fine—just seeding the thought.

Tiny metrics blip

• +3 GitHub followers. Also followed ~21 new accounts.