v0.15.7

Highlights

• Subagent collaboration: subagents can now proactively reach their lead agent mid-task — ask for context (info), request a handoff described as a needed capability (handoff, the lead picks the specialist), or escalate a decision (escalate) — with structured payloads and per-turn rate limits. Blocked children are instructed to ask instead of guessing, and decisions still reach a child that already finished via Agent(resume=...).
• Bot mode (/bot): an unattended permission mode where reversible actions (reads, in-workspace edits, read-only commands, goal and collaboration tools) auto-approve while irreversible operations (push / publish / delete / sensitive files / unclassified) are denied and parked for human review — with the denial reason fed back to the model. Web sessions in bot mode keep the server alive so unattended runs finish, and blocked goals write a decision report under unattended/.
• Evidence-based goal verification: rejections must name concrete gaps (issue-free verdicts are returned for specifics); evidence gaps self-repair for up to 3 rounds, subjective calls park the goal immediately for a human decision, and disputed verdicts can be arbitrated by a reviewer subagent.
• Web search upgrade: new Bing provider (server-rendered HTML parsing with click-tracker decoding) joins a reordered fallback chain — DuckDuckGo → Bing → Sogou → Baidu → 360 — guarded by a chain-level 40s budget and a 15s per-source ceiling so a dead path cannot stack waits. Parsing tolerates alternate markup, undecodable redirect links are dropped, and anti-bot challenges fail fast into the next engine.
• Documentation: AGENTS.md gained sections for subagent collaboration, bot mode, and goal verification triage; the README (EN/ZH) reflects the new capabilities and the /bot command.
• CI: integration tests stabilized (deterministic async gating, explicit budgets) and search/config coverage extended.

Validation

• Typecheck passed.
• Agent core tests passed (3107).
• TUI tests passed (1060).
• CI and Release pre-checks green on the release commit.