chore(release): 0.4.0 [skip ci]

feat: reference cleanup, markdown fencing, model aliases, prompt queueing (v0.4.0)

docs: record reference cleanup plan

docs: update ROADMAP.md and TODO.md with phase 1-6 completion and phase 7 items

chore(release): 0.3.0 [skip ci]

fix: remove zod .trim() from tool-content schemas to preserve raw output

feat: implement phases 1-6 of tool output and protocol conformance plan

docs: incorporate reference implementation patterns into PLAN.md and TODO.md

docs: rewrite PLAN.md for post-v0.2.0 gap closure

docs: add claude-agent-acp comparison and rewrite TODO with gap inventory

docs: add ACP conformance gaps analysis

chore(release): 0.2.0 [skip ci]

feat: acp refactor phases 1-7

docs: add ACP refactor plan and checklist

chore(release): 0.1.2 [skip ci]