Variable DEFAULT_NAMED_INPUTSConst

Default granular namedInputs for nx.json.

Splits inputs by concern so README/test edits don't bust build caches:

• production — source + per-package build config (excludes tests/dist)
• test — test sources + vitest config
• docs — markdown
• sharedConfig — workspace-level tsconfig + projen config (forces invalidation on repo-wide config changes)