Epic: Code quality refactors — lazy-loading util, readiness checks, lerobot_teleoperate design

[cagataycali]

Umbrella for code-hygiene refactors flagged across PR reviews.

Scope

flowchart LR
  LAZY[Package-wide lazy-loading util] --> Q[Code Quality]
  SLEEP[Replace sleep with readiness checks<br/>+ time-window RTC latency] --> Q
  TELE[lerobot_teleoperate design<br/>subprocess vs direct API] --> Q

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Tasks

• Package-wide lazy-loading utility (Refactor: package-wide lazy-loading utility #72)
  • Single helper in strands_robots/utils.py
  • Migrate all __getattr__ lazy imports
  • Tests verify lazy behavior
• Replace sleep() with readiness checks; time-window RTC latency (Improve robustness: replace sleep() with readiness checks, time-window RTC latency #71)
  • No bare time.sleep() for process startup — poll with timeout
  • RTC latency tracking works at 0.001Hz–5000Hz
• Design discussion: lerobot_teleoperate.py — subprocess vs direct teleop_loop() ([Question] Design for lerobot_teleoperate.py #6)

Replaces

#72, #71, #6