The existing replyStyle section explains the Posts-vs-Threads tradeoff but
doesn't document how the value is actually resolved at send-time, nor what
happens to thread-root context across configurations. Operators who hit
unexpected top-level posts (e.g., requireMention=false setups, long-running
agents whose proactive sends fall outside the live Bot Framework turn) have
no docs-side anchor for understanding which knob to flip.
Add two subsections under Reply Style:
1. Resolution precedence — channel > team > global > implicit default,
plus the requireMention-derived implicit default.
2. Thread context preservation — describes that replyStyle=thread re-attaches
the original thread root on outbound (live and proactive paths after
#78387), with the threadId/activityId fallback for legacy stored refs.
Calls out the deliberate "no thread suffix" behavior for replyStyle=top-level.
Pure documentation change, no behavior or surface impact.
Summary:
- Add explicit sessions cleanup --fix-dm-scope handling for stale direct-DM rows after session.dmScope returns to main.
- Preserve removed-row transcripts as deleted archives and expose the option through CLI, Gateway RPC, protocol schema, generated Swift mirrors, docs, tests, and changelog.
- Fixes#47561 and #45554.
Verification:
- pnpm exec oxfmt --check --threads=1 CHANGELOG.md docs/cli/sessions.md docs/concepts/session.md src/config/sessions/cleanup-service.ts src/commands/sessions-cleanup.ts src/cli/program/register.status-health-sessions.ts src/gateway/protocol/schema/sessions.ts src/gateway/server-methods/sessions.ts src/config/sessions/store.pruning.integration.test.ts src/commands/sessions-cleanup.test.ts src/cli/program/register.status-health-sessions.test.ts
- git diff --check origin/main...HEAD
- pnpm protocol:check
- pnpm exec oxlint src/config/sessions/cleanup-service.ts src/commands/sessions-cleanup.ts src/cli/program/register.status-health-sessions.ts src/gateway/protocol/schema/sessions.ts src/gateway/server-methods/sessions.ts src/config/sessions/store.pruning.integration.test.ts src/commands/sessions-cleanup.test.ts src/cli/program/register.status-health-sessions.test.ts
- pnpm test src/config/sessions/store.pruning.integration.test.ts src/commands/sessions-cleanup.test.ts src/cli/program/register.status-health-sessions.test.ts src/gateway/server.sessions.store-rpc.test.ts
- pnpm changed:lanes --json
Security:
- No new network, credential, process execution, dependency, or permission surface. Cleanup is explicit operator-invoked local session-store repair.
CI note:
- Exact-head CI failures match current main at 2e78fc57af in unrelated extensions/codex and extensions/microsoft-foundry type checks, outside this PR diff. No required checks are reported for this branch.
