v0.43.0

What's Changed

• docs: record btw release handoff by @narumiruna in #495
• docs: archive pi-tui-kit adoption release plan by @narumiruna in #496
• docs: require extension semantic independence by @narumiruna in #497
• refactor(plan-mode)!: remove subagent-specific policy by @narumiruna in #498
• docs: update skills by @narumiruna in #499
• refactor(pi-tui-kit): centralize interaction semantics by @narumiruna in #500
• docs: archive Pi TUI Kit interaction driver plan by @narumiruna in #501
• feat(pi-subagents): add read-only inspection and consultation by @narumiruna in #502
• feat(btw): add side-thread thinking settings by @narumiruna in #503
• fix(btw): harden side-thread settings flow by @narumiruna in #504
• feat(pi-subagents): advertise consult agents by @narumiruna in #505

Full Changelog: v0.42.1...v0.43.0