[codex] Default symbol node types to hidden

[joesobo]

Summary

• Default core symbol, variable, symbol-kind, and Godot class_name symbol node types to hidden.
• Keep the extension shared graph-control defaults in sync with the core defaults.
• Add core regression coverage and update extension default visibility snapshots.
• Add a patch changeset for @codegraphy-dev/core and @codegraphy-dev/extension.

Validation

• pnpm --filter @codegraphy-dev/extension exec vitest run --config vitest.config.ts tests/shared/graphControls/defaults/maps.test.ts tests/shared/graphControls/defaults/nodeTypes.test.ts tests/extension/graphView/controls/definitions/snapshot.test.ts
• pnpm --filter @codegraphy-dev/core exec vitest run --config vitest.config.ts tests/graphControls/defaults/definitions.test.ts
• pnpm --filter @codegraphy-dev/extension exec vitest run --config vitest.config.ts tests/extension/graphView/provider/runtime.test.ts tests/webview/app/shell/view.test.tsx
• pnpm run lint
• pnpm run typecheck
• pnpm run build

Notes

• pnpm run test reached the full unit gate but failed in two existing timing-heavy extension files under parallel load; rerunning those files directly passed.
• pnpm run test:playwright currently fails because the Playwright harness stays on Loading graph...; the current main harness code sends graph data but does not send APP_BOOTSTRAP_COMPLETE, so I left that separate from this small defaults PR.

[changeset-bot]

🦋 Changeset detected

Latest commit: d8dabf4

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 3 packages

Name	Type
@codegraphy-dev/core	Patch
@codegraphy-dev/extension	Patch
@codegraphy-dev/mcp	Patch

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