manipulation git fixes

[paul-nechifor]

No description provided.

[chatgpt-codex-connector]

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[greptile-apps]

Greptile Summary

This PR performs systematic code cleanup across the manipulator driver codebase, removing unused imports and modernizing type hints.

Key Changes:

• Removed unused imports (Optional, Union, ABC, ManipulatorInfo, message types, etc.) across 26 files
• Modernized type hints from Union[float, list[float]] to PEP 604 syntax float | list[float] in converters.py
• Prefixed intentionally unused variables with underscore (_error, _qd_ref) to suppress linter warnings
• Cleaned up trailing whitespace in model files
• Removed extraneous blank lines for consistency

Impact:
All changes are non-functional cleanup that improve code quality without affecting runtime behavior. The changes reduce import clutter, adopt modern Python typing conventions, and follow best practices for unused variable naming.

Confidence Score: 5/5

• This PR is safe to merge with no risk
• All changes are purely cosmetic code cleanup with no functional modifications: removing unused imports, modernizing type hints to PEP 604 syntax, prefixing unused variables with underscore, and removing whitespace. These changes cannot introduce bugs or break existing functionality.
• No files require special attention

Important Files Changed

Filename	Overview
dimos/hardware/manipulators/base/components/motion.py	Removed unused Optional import and prefixed unused error variable with underscore
dimos/hardware/manipulators/base/driver.py	Removed unused imports: ABC, Optional, and ManipulatorInfo
dimos/hardware/manipulators/base/spec.py	Removed unused imports: Optional, PoseStamped, Twist, and Path
dimos/hardware/manipulators/base/utils/converters.py	Modernized type hints from Union[float, list[float]] to `float
dimos/manipulation/control/trajectory_controller/joint_trajectory_controller.py	Prefixed unused qd_ref variable with underscore to indicate it's intentionally unused

Sequence Diagram

sequenceDiagram
    participant Dev as Developer
    participant Linter as Code Linter/IDE
    participant Code as Codebase
    
    Note over Dev,Code: Code Cleanup Process
    
    Dev->>Linter: Run import checker
    Linter->>Code: Identify unused imports
    Code-->>Linter: List of unused imports found
    
    Dev->>Code: Remove unused imports<br/>(Optional, Union, etc.)
    
    Dev->>Linter: Run type hint modernization
    Linter->>Code: Identify Union type hints
    Code-->>Linter: Union[float, list[float]] occurrences
    
    Dev->>Code: Update to modern syntax<br/>(float | list[float])
    
    Dev->>Linter: Check for unused variables
    Linter->>Code: Find unused return values
    Code-->>Linter: error, qd_ref not used
    
    Dev->>Code: Prefix with underscore<br/>(_error, _qd_ref)
    
    Dev->>Linter: Check whitespace
    Linter->>Code: Detect trailing whitespace
    Code-->>Linter: Trailing spaces found
    
    Dev->>Code: Remove trailing whitespace
    
    Note over Dev,Code: All changes are non-functional<br/>cleanup improvements

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