chore: deprecate in favor of gentle-ai

fix(sync): restore gentle-ai parity across assets and installers

fix(orchestrator): context-inflation delegation + align skill resolution

perf(skills): compact shared prompts ~17% + add judgment-day skill (parity v1.8.9)

refactor(sdd): token optimization + executor boundary (parity with gentle-ai v1.8.3)

feat(opencode): self-sufficient sub-agents for skill discovery

fix(opencode): pass agent model through delegate() via session.prompt()

fix(opencode): promote @agent-name mentions to recommended model routing

fix(opencode): add per-agent model field and document model routing workaround

docs(readme): split 945-line README into lean 145-line overview + 7 docs

docs(orchestrator): add delegate-first rule — prefer async over sync delegation

feat(opencode): add background-agents plugin and unify single/multi configs

fix(skills): resolve final review findings — registry ownership, envelope schema, stale refs

fix(skills): add sdd-phase-common.md references to verify and archive skills

fix(skills): resolve review findings — unify registry ownership, restore anti-patterns, add token economics doc