Release 6.4.0

• feat: add dotenv provenance + A2 dynamic order 72226ff
• feat: extract dotenv target resolver helper 34a1d68
• docs: clarify shipped plugin interop c61aecc
• test: assert dynamic provenance ordering 966c7c9
• When: 2025-02-06T00:00:00Z 0659315
• fix: provenance type/lint regressions 4985df3
• test: assert file provenance stacks 349075e
• test: align file provenance unset semantics 32f610b
• docs: expand provenance requirements detail a6b8930
• chore(build): remove circular dep warnings ed7eae2
• docs: provenance + dynamic precedence plan 269da58
• fix: satisfy exactOptionalPropertyTypes f9e520d