wgm v0.4

What's Changed

• docs(references): add local-models.md token-budget playbook for small-context models by @SchwartzKamel in #64
• feat(evals): SkillOpt-inspired live grading + non-regression gate for evals.json by @SchwartzKamel in #65
• docs(audit): consolidate PRs #62-#65 findings + land agent-action fixes by @SchwartzKamel in #66
• feat: harden loop and audit evidence by @SchwartzKamel in #97
• docs: record WGM growth stage by @SchwartzKamel in #98
• feat: operationalize WGM growth opportunities by @SchwartzKamel in #99
• docs: record growth delivery state by @SchwartzKamel in #100

Full Changelog: v0.3...v0.4