Add pip fallback and update Claude model defaults

[pirate]

Summary

This PR adds a direct pip installation fallback mechanism for the pip plugin and updates Claude model configuration defaults across multiple plugins to use the latest model identifiers.

Key Changes

Pip Plugin Enhancements

• New _direct_pip_install() function: Implements a fallback installation method that bypasses PipProvider/uv when they fail (e.g., in sandboxed or CI environments)

  • Installs setuptools and wheel as build dependencies
  • Uses --prefer-binary flag to minimize build failures
  • Extracts version information via pip show
  • Returns binary path and version on success

• Fallback integration in main(): Added two fallback attempts:

  1. When PipProvider raises an exception
  2. When PipProvider succeeds but the binary is not found in the venv

• Both fallback paths emit proper diagnostic messages and emit binary records before exiting

Claude Model Configuration Updates

• Updated default model across all Claude plugins from short names (e.g., "sonnet") to full model identifiers:

  • claudecode: "sonnet" → "claude-sonnet-4-6"
  • claudecodecleanup: "sonnet" → "claude-sonnet-4-6"
  • claudecodeextract: "sonnet" → "claude-sonnet-4-6"
  • claudechrome: "sonnet" → "claude-sonnet-4-6"

• Updated example descriptions to show full model identifiers (claude-sonnet-4-6, claude-opus-4-6, claude-haiku-4-5-20251001)

• Increased default max_turns for better agentic reasoning:

  • claudecode: 10 → 50
  • claudecodecleanup: 25 → 50
  • claudecodeextract: 10 → 50

• Updated docstrings and test assertions to reflect new defaults

Implementation Details

• The fallback mechanism gracefully handles missing binaries and extraction failures
• All subprocess calls include appropriate timeouts (120s for setup, 300s for install, 30s for version check)
• Fallback only triggers if the venv's pip binary is executable
• Version extraction is wrapped in exception handling to prevent failures if pip show is unavailable

https://claude.ai/code/session_017eYK4Gkxy3F4UwHwhy7j9D

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Summary by cubic

Switches the pip installer to native abx-pkg>=1.9.23 support for post‑install scripts and release‑age checks, and updates Claude plugin defaults to claude-sonnet-4-6 with max_turns=50. Fixes claudechrome to use config defaults and refreshes model IDs.

• New Features

  • Pip: use PipProvider/Binary with postinstall_scripts and min_release_age; add --postinstall-scripts and --min-release-age; pin abx-pkg>=1.9.23.
  • Non‑pip providers (apt, brew, cargo, npm, puppeteer, chromewebstore, env): set min_release_age: 0.
  • Claude: default model claude-sonnet-4-6; max_turns=50; update MODEL_MAP to claude-sonnet-4-6/claude-opus-4-6; claudechrome reads defaults from hookConfig; docs/tests updated (incl. cleanup test to allow equal max_turns).

• Migration

  • Default model is now claude-sonnet-4-6 for claudecode, claudecodecleanup, claudecodeextract, and claudechrome.
  • Default max_turns is now 50 for claudecode, claudecodecleanup, and claudecodeextract. Set model and max_turns in plugin config to keep prior behavior.

^{Written for commit 635d8ca. Summary will update on new commits.}