Use external @poleski/quality-tools package

[joesobo]

Summary

• Remove the in-monorepo packages/quality-tools implementation and root Stryker config.
• Add @poleski/quality-tools as a local linked dev dependency for pre-publish integration testing.
• Route the root quality scripts through the external quality-tools CLI.
• Rename CodeGraphy-specific Vitest env vars to QUALITY_TOOLS_* and update quality docs for the external ownership model.

Validation

• pnpm install
• pnpm --filter @codegraphy/extension run typecheck
• pre-commit pnpm run typecheck (all 9 workspace packages passed)
• pnpm exec quality-tools --help
• pnpm run organize -- extension/src/shared --json
• pnpm run reachability -- extension/src/shared/visibleGraph
• pnpm --filter @codegraphy/extension exec vitest run --config vitest.config.ts tests/vitest.includes.test.ts

Handoff Before Merge

This PR intentionally uses "@poleski/quality-tools": "link:../quality-tools/packages/quality-tools" so we can test the split locally before publishing. After @poleski/quality-tools is published, replace the link with the published semver range, run pnpm install, and rerun the quality script smoke checks before merging.

Known Signal

pnpm run boundaries -- extension/src/shared/visibleGraph reaches the external CLI but fails on the current extension-wide boundary signal: packages/extension/src/webview/pluginHost/api/contracts/webview.ts [webview] -> packages/extension/src/core/plugins/disposable.ts [core]. I left that unrelated architecture issue untouched.

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Latest commit: fd406ba

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[joesobo]

Update pushed: finished the monorepo bridge cleanup and validation.

• Removed the stale root tsconfig.json reference to packages/quality-tools.
• Isolated pipeline/rules.test.ts from user-local installed plugin state so the extension suite is deterministic.
• Legacy internal quality-tools audit now only finds the intentional local link:../quality-tools/packages/quality-tools dependency entries.

Validation:

• pnpm --filter @codegraphy/extension exec vitest run --config vitest.config.ts tests/extension/pipeline/rules.test.ts passed.
• pnpm run typecheck passed.
• pnpm run lint passed.
• pnpm run crap -- extension/ ran through the linked external package, passed 868/868 Vitest files and 5433/5433 tests, then reported 34 functions above the configured CRAP threshold of 8.