Ensure packages are checked from penv

[Jason2866]

use full path for uv and pio.

Checklist:

• The pull request is done against the latest develop branch
• Only relevant files were touched
• Only one feature/fix was added per PR, more changes are allowed when changing boards.json
• I accept the CLA

Summary by CodeRabbit

• New Features
  • Added automatic installation of the "platformio" package with a minimum required version.
• Bug Fixes
  • Improved reliability of Python tool execution by resolving and using the correct paths for uv and pio executables, ensuring compatibility across different environments.
• Chores
  • Updated dependency installation commands to use the appropriate Python interpreter and streamlined environment handling.

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Walkthrough

This change updates the way the uv and pio executables are located and invoked in the build system, explicitly resolving their paths relative to the Python interpreter directory. It also adds a minimum version requirement for the platformio package and adjusts subprocess calls to include the --python flag and remove explicit environment passing.

Changes

Cohort / File(s)	Change Summary
Executable Path Resolution for uv and pio builder/frameworks/espidf.py	All invocations of uv and pio now use explicit paths constructed from the Python executable directory, replacing reliance on system PATH or shutil.which. Quoting and Windows-specific handling (.exe) are included.
Python Dependency Management and Subprocess Adjustments builder/main.py	Adds "platformio": ">=6.1.18" to Python dependencies. Subprocess calls for installing and listing Python packages now use the --python flag with the virtual environment Python executable and omit the explicit environment variable argument.

Sequence Diagram(s)

sequenceDiagram
    participant Builder
    participant PythonEnv
    participant uv
    participant pio

    Builder->>PythonEnv: Get Python executable path
    Builder->>uv: Resolve uv executable path (from Python dir)
    Builder->>uv: Run 'uv pip list/install' with --python flag
    Builder->>pio: Resolve pio executable path (from Python dir)
    Builder->>pio: Run pio commands using explicit path

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Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Possibly related PRs

• call esptool with full path #226: Also modifies how tool executables are resolved, focusing on esptool path resolution.
• Full uv path #227: Directly addresses the explicit resolution and invocation of the uv executable, closely related to these changes.

Poem

A bunny hopped through Python’s lair,
Seeking tools with utmost care.
No more guessing in the PATHy night—
Now uv and pio are found just right!
With dependencies clear and subprocesses tight,
The build hops forward, light and bright.
🐇✨

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[Jason2866]

@coderabbitai full review

[coderabbitai]

✅ Actions performed

Full review triggered.