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fix(acp): wake agents for mentions added by edits - #4741

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fix/edit-message-agent-mentions
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fix(acp): wake agents for mentions added by edits#4741
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fix/edit-message-agent-mentions

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@loganj loganj commented Aug 4, 2026

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Summary

Edited messages can add a new agent mention, but the ACP harness previously subscribed only to original messages. The newly mentioned agent therefore never received the edit and did not wake up.

This change:

  • includes stream-message edits (kind:40003) in the default actionable-mention subscriptions used at startup, for dynamically discovered channels, and in setup mode;
  • preserves the mention filter and explicit --kinds/config-rule overrides; in the default configuration, an edit must still mention the agent to wake it;
  • routes edit-triggered responses through the original message (or its thread root) instead of the auxiliary edit event, including setup nudges and native mid-turn steering;
  • prepares edit-aware native steers outside the relay loop while reserving the queued event, with bounded queue accounting and exact-once release/fallback behavior; and
  • invalidates prepared edits across channel removal and re-addition so stale asynchronous work cannot cross a membership boundary.

If the original message cannot be fetched within the bounded lookup, routing falls back to the edit's target ID rather than exposing the invisible edit event as a reply anchor.

Related issue

None found.

Testing

  • cargo test -p buzz-acp — 752 unit tests and 9 integration tests passed
  • cargo clippy -p buzz-acp --all-targets -- -D warnings
  • cargo fmt --all -- --check
  • git diff --check

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loganj force-pushed the fix/edit-message-agent-mentions branch 2 times, most recently from a47e638 to ac89510 Compare August 4, 2026 16:48
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loganj marked this pull request as ready for review August 4, 2026 18:15
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loganj requested a review from a team as a code owner August 4, 2026 18:15

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Comment thread crates/buzz-acp/src/config.rs
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loganj force-pushed the fix/edit-message-agent-mentions branch 2 times, most recently from 4271fc7 to a0ec518 Compare August 10, 2026 17:31

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loganj force-pushed the fix/edit-message-agent-mentions branch from a0ec518 to c2573e3 Compare August 10, 2026 18:32

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Review submitted by Carl on Wes's behalf. I found an exact-once race in the asynchronous edit preparation path: in-flight deadline recovery can dispatch the reserved edit normally, after which the late preparation can steer the same edit into the replacement turn. Please bind prepared work to the turn/reservation it was created for and discard completion after that reservation has been recovered or consumed.

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Comment thread crates/buzz-acp/src/queue.rs
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loganj force-pushed the fix/edit-message-agent-mentions branch from ea2542d to 6b6a033 Compare August 12, 2026 18:38
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loganj commented Aug 12, 2026

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The requested exact-once reservation fix is present on current head 6b6a033f0956454988bfefed4ec13eca00ad4637, with full-branch validation and independent Royals review complete. @wesbillman could you please re-review or clear the stale requested-changes gate when able?

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loganj force-pushed the fix/edit-message-agent-mentions branch from 22a0ffd to 2334ad7 Compare August 12, 2026 20:09

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Comment thread crates/buzz-acp/src/pool.rs
Larry and others added 21 commits August 13, 2026 11:44
Signed-off-by: Larry <8cf5a83f590ec0955b11647d1c88f796a98e088c30a492c58e0e46c3026ae7a4@buzz.block.builderlab.xyz>
Signed-off-by: Larry <8cf5a83f590ec0955b11647d1c88f796a98e088c30a492c58e0e46c3026ae7a4@buzz.block.builderlab.xyz>
Signed-off-by: Larry <8cf5a83f590ec0955b11647d1c88f796a98e088c30a492c58e0e46c3026ae7a4@buzz.block.builderlab.xyz>
Signed-off-by: Larry <8cf5a83f590ec0955b11647d1c88f796a98e088c30a492c58e0e46c3026ae7a4@buzz.block.builderlab.xyz>
Signed-off-by: Brother Darryl <146fb160a3266e6165bfa385f6048c975eda9e21cf65da097a0b5ea7952532a5@buzz.block.builderlab.xyz>
Signed-off-by: Brother Darryl <146fb160a3266e6165bfa385f6048c975eda9e21cf65da097a0b5ea7952532a5@buzz.block.builderlab.xyz>
Signed-off-by: Brother Darryl <146fb160a3266e6165bfa385f6048c975eda9e21cf65da097a0b5ea7952532a5@buzz.block.builderlab.xyz>
Signed-off-by: Brother Darryl <146fb160a3266e6165bfa385f6048c975eda9e21cf65da097a0b5ea7952532a5@buzz.block.builderlab.xyz>
Signed-off-by: Larry <8cf5a83f590ec0955b11647d1c88f796a98e088c30a492c58e0e46c3026ae7a4@buzz.block.builderlab.xyz>
Signed-off-by: Larry <8cf5a83f590ec0955b11647d1c88f796a98e088c30a492c58e0e46c3026ae7a4@buzz.block.builderlab.xyz>
Signed-off-by: Larry <8cf5a83f590ec0955b11647d1c88f796a98e088c30a492c58e0e46c3026ae7a4@buzz.block.builderlab.xyz>
Signed-off-by: Larry <8cf5a83f590ec0955b11647d1c88f796a98e088c30a492c58e0e46c3026ae7a4@buzz.block.builderlab.xyz>
Signed-off-by: Brother Darryl <146fb160a3266e6165bfa385f6048c975eda9e21cf65da097a0b5ea7952532a5@buzz.block.builderlab.xyz>
Signed-off-by: Larry <8cf5a83f590ec0955b11647d1c88f796a98e088c30a492c58e0e46c3026ae7a4@buzz.block.builderlab.xyz>
Signed-off-by: Larry <8cf5a83f590ec0955b11647d1c88f796a98e088c30a492c58e0e46c3026ae7a4@buzz.block.builderlab.xyz>
Signed-off-by: Larry <8cf5a83f590ec0955b11647d1c88f796a98e088c30a492c58e0e46c3026ae7a4@buzz.block.builderlab.xyz>
Signed-off-by: Larry <8cf5a83f590ec0955b11647d1c88f796a98e088c30a492c58e0e46c3026ae7a4@buzz.block.builderlab.xyz>
Signed-off-by: Larry <8cf5a83f590ec0955b11647d1c88f796a98e088c30a492c58e0e46c3026ae7a4@buzz.block.builderlab.xyz>
Signed-off-by: Larry <8cf5a83f590ec0955b11647d1c88f796a98e088c30a492c58e0e46c3026ae7a4@buzz.block.builderlab.xyz>
Signed-off-by: Larry <8cf5a83f590ec0955b11647d1c88f796a98e088c30a492c58e0e46c3026ae7a4@buzz.block.builderlab.xyz>
Signed-off-by: Larry <8cf5a83f590ec0955b11647d1c88f796a98e088c30a492c58e0e46c3026ae7a4@buzz.block.builderlab.xyz>
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loganj force-pushed the fix/edit-message-agent-mentions branch from 23b05e1 to ab8411f Compare August 13, 2026 16:18

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Comment thread crates/buzz-acp/src/lib.rs
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loganj dismissed wesbillman’s stale review August 13, 2026 16:40

The exact-once race identified by this review was fixed, regression-tested, replied to, and its conversation resolved at current head ab8411f.

Signed-off-by: Larry <8cf5a83f590ec0955b11647d1c88f796a98e088c30a492c58e0e46c3026ae7a4@buzz.block.builderlab.xyz>

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pub(crate) fn default_mention_kinds() -> Vec<u32> {
vec![
KIND_STREAM_MESSAGE,
KIND_STREAM_MESSAGE_EDIT,

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P2 Badge Route edit-triggered typing to the original thread

When this newly subscribed edit targets a threaded reply and starts a normal turn, dispatch_pending still derives typing_scope by calling parse_thread_tags on the raw kind:40003 event. Its bare e target is intentionally ignored there, so build_typing_event emits an h-only indicator and Desktop records it at channel scope rather than in the original thread. Resolve the edit target for the typing scope, or update the scope after edit enrichment, so users viewing the thread can see that the agent is responding.

Useful? React with 👍 / 👎.

Comment on lines +2837 to +2838
let reaction_event_id =
queue::reaction_target_id(&buzz_event.event);

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P2 Badge Clean up reactions using the resolved edit target

When an accepted edit is still queued or reserved and a membership-removal notification drains the channel, this now adds 👀 to the original message, but EventQueue::drain_channel returns raw edit IDs and omits withheld IDs entirely; the removal handler consequently tries to delete a reaction from the auxiliary edit instead of the visible original. In contexts where deletion remains permitted, the original still keeps a stale 👀 indefinitely. Have the drain path return the same reaction_target_id values used here, including withheld reservations.

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