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* fix(channel): deliver the final answer only to Slack and Lark (MUL-5378) Channel replies could carry the agent's interim narration alongside its answer (GH #6006). Two independent causes, both fixed at the layer that owns the deliverable. Prompt regression. #4776 told every channel-backed chat to reply with the answer only and not narrate. The MUL-4899 split (#5557) moved that rule into the Slack branch along with the `chat history` / `chat thread` commands its wording happened to mention, so Feishu/Lark silently lost it on 2026-07-17. The rule is a third axis — it keys off "is there a channel at all", like the attachment-upload axis — so it now sits outside the Slack gate, generalized from "these history reads" to any progress note. The old two-layer matrix could not catch the regression because it only asserted the rule on the Slack case; the new test pins all three states. Runtime contract. Result.Output is documented as "final user-facing output selected by the backend" (agent.go), but Codex concatenated every agent_message and Copilot joined every assistant turn with "\n\n", so a tool-using run handed the daemon narration + answer as one string. Codex now takes the message its app-server labels phase="final_answer", falling back to the most recent agent message on the legacy protocol; Copilot keeps the latest complete turn, with the streaming deltas retained as the process-died-mid-turn fallback. This narrows delivery only — every message still streams as MessageText, so the Multica transcript is unchanged. Claude Code, CodeBuddy and qwen already selected a terminal result and are untouched; opencode/deveco/openclaw share the accumulating shape and want the same audit (pi was already fixed this way in #4894). Verified: go build ./..., go vet, full ./pkg/agent and ./internal/daemon/... suites pass locally. Co-authored-by: multica-agent <github@multica.ai> * fix(channel): scope the no-narration rule to process, not results Review follow-ups on the channel delivery rule and the Copilot turn boundary. The prompt said a reply "must not say what you are about to do or just did", which literally forbids the deliverable itself: asked to create an issue, the correct reply IS "created issue X". Rewritten to ban planned and in-progress narration while explicitly protecting the completion confirmation. The test now pins both halves — a future edit that drops the carve-out, or restores the blanket past-tense ban, fails. The example also referenced "check the code", which is not a thing an agent does inside a Slack or Lark conversation. Replaced with a generic "let me look into that first". Copilot cleared pendingDelta only when the authoritative assistant.message carried content. A tool-only turn reports content:"" with the requests as the whole turn, so its streamed deltas stayed buffered and were stitched onto the next turn's partial text if the process then died mid-stream — verified: the new test yields "Checking the logs now.The retry loop" before the fix. The reset now happens on every assistant.message, since that event is the turn boundary regardless of whether it carries text. Verified: go build ./..., go vet, full ./pkg/agent and ./internal/daemon/... suites pass locally. Co-authored-by: multica-agent <github@multica.ai> * fix(channel): tighten the no-narration rule to one sentence Same contract, fewer tokens: the four-line rationale comment collapses to one, and the delivery rule drops the restatement, the second example and the completion examples. What survives is exactly the semantic boundary the tests pin — no planned/in-progress narration, completed actions still count as the outcome — plus the one narration example actually observed in the report. Verified: go build ./..., go vet, ./internal/daemon/... suite pass locally. Co-authored-by: multica-agent <github@multica.ai> --------- Co-authored-by: Bohan-J <bohan@devv.ai> Co-authored-by: multica-agent <github@multica.ai>