feat(installer): add lean bootstrap planner

[kvandre12-commits]

Summary

This PR addresses the dependency-bloat problem on constrained environments (especially Android/Termux) by moving the decision point from runtime fallback handling to install-time bootstrap planning.

Instead of importing the full runtime path and then gracefully degrading after unsupported dependencies have already been attached, this introduces a lightweight bootstrap entrypoint (code-puppy-bootstrap) that detects the target environment first, selects an install profile, and emits a lean install/reattach plan before optional capabilities are attached.

Fixes

• Supersedes fix(browser): degrade gracefully when Playwright is unavailable #483 by addressing the root architectural issue behind heavy dependency attachment on Android/Termux.

What's Changed

• Added code_puppy/bootstrap.py as a lightweight bootstrap CLI entrypoint.
• Added code_puppy/bootstrap_profiles.py for environment detection and profile-based planning.
• Added builtin install profiles:
  • core
  • android-termux-lean
  • desktop-browser
  • developer-full
• Added optional manifest-driven overrides for deployment policy:
  • extras_add
  • extras_remove
  • notes
  • package_name
• Added a new console script entrypoint:
  • code-puppy-bootstrap
• Updated the README to document the lean bootstrap planning flow.
• Added tests/test_bootstrap.py covering:
  • environment/profile routing
  • manifest override behavior
  • JSON CLI output
  • bootstrap/runtime separation

Design Notes

The bootstrap path is intentionally stdlib-only and decoupled from cli_runner, so installation planning can happen without pulling in the heavier runtime CLI import graph.

That separation is the main design goal of this change:

• detect first
• install lean
• reattach optional capability later when the target environment actually supports it

Validation

Local validation for this PR slice:

• ruff format --check .
• ruff check .
• python -m pytest tests/test_bootstrap.py -q -o addopts='' (8 passed)

Additional regression coverage previously re-run against this changeset also passed locally:

• tests/test_cli_runner.py
• tests/test_cli_runner_coverage.py
• tests/test_tools_registration.py
• tests/test_tools_init_full_coverage.py
• tests/test_uvx_detection.py

Note on Current Upstream Test Noise

While doing a full local python -m pytest tests/ validation on the current checkout, there are unrelated failures outside this PR's change surface:

• tests/plugins/test_ollama_plugin.py
  • failing because mocks expect OpenAIProvider on code_puppy.plugins.ollama.register_callbacks
• tests/plugins/test_shell_safety_callbacks.py
  • failing because mocks expect get_global_model_name on code_puppy.plugins.shell_safety.register_callbacks

These failures appear unrelated to the bootstrap installer changes in this PR and look like existing test/module drift in other plugin areas.

Why This Approach

This change prefers install-time capability planning over post-install graceful degradation.

That gives constrained environments a cleaner default path:

• no unnecessary optional dependency attachment up front
• no pretending unsupported environments are "fine" after the expensive bits already landed
• a clearer reattach story once the target platform is known-good

[mpfaffenberger]

Can you add instructions to install / run Code Puppy on native Android / Termux in the README.md using this new system?

[kvandre12-commits]

Closing this one as superseded by #496.

#494 captured the lean bootstrap planner direction, but #496 is now the cleaner upstream lane because it keeps that Android/Termux bootstrap intent while also fixing the actual native dependency blockers found by real installs:

• Playwright moved out of the base install path
• PyPI ripgrep moved out of the base install path
• bootstrap/lite installer work carried forward there
• verified on Android/Termux with real install checks, not just dry-run resolution

Follow-up / active PR: #496

[kvandre12-commits]

Superseded by #496, which carries the lean Android/Termux bootstrap path plus the native dependency fixes needed for a minimal working Code Puppy install.