Greptile Summary

This PR adds automated clock synchronization checks for Unitree WebRTC deployments and consolidates human-readable formatters across the codebase.

Key Changes:

• ClockSyncConfigurator performs pure-Python SNTP queries to detect clock drift (±100ms threshold) with graceful degradation when NTP is unreachable
• system_checks() bridge function integrates SystemConfigurator into Blueprint.requirements() workflow
• system_configurator refactored from single file into package (base.py, lcm.py, clock_sync.py) with backward-compatible re-exports
• dimos/utils/human.py consolidates 6 scattered formatters into 3 functions: human_duration(), human_bytes(), human_number()
• Integrated into unitree_go2_basic and unitree_g1_basic hardware blueprints

Breaking Changes (intentional):

• BandwidthUnit enum removed from lcmspy.py
• Topic.kbps_hr() and Topic.total_traffic_hr() now return str instead of tuple[float, BandwidthUnit]

Testing:

• 67 total tests including comprehensive clock sync coverage (NTP reachable/unreachable, offset scenarios, platform-specific fixes)
• All breaking changes have corresponding test updates

Confidence Score: 5/5

• This PR is safe to merge with minimal risk
• Clean refactoring with comprehensive test coverage (67 tests), graceful error handling, backward compatibility maintained via package re-exports, and breaking changes are intentional/documented
• No files require special attention

Important Files Changed

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[Blueprint.requirements] --> B[system_checks wrapper]
    B --> C[configure_system]
    C --> D{CI environment?}
    D -->|Yes| E[Skip all checks]
    D -->|No| F[Run ClockSyncConfigurator.check]
    F --> G{NTP query}
    G -->|Timeout/Error| H[Pass gracefully]
    G -->|Success| I{abs offset > 100ms?}
    I -->|No| J[Pass]
    I -->|Yes| K[Show explanation]
    K --> L{User approves fix?}
    L -->|No non-critical| M[Continue with warning]
    L -->|Yes| N[Run fix chain]
    N --> O{Platform?}
    O -->|Linux| P[ntpdate > sntp > date -s]
    O -->|macOS| Q[sntp -sS]
    P --> R[Blueprint starts]
    Q --> R
    J --> R
    H --> R
    M --> R

_{Last reviewed commit: f2c499b}