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feat(mentions): support @mentioning issues + server-side auto-expansion (#242)

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* feat(mentions): support @mentioning issues in comments

- Extend MentionItem type to include "issue" alongside "member"/"agent"
- Add issue search (by identifier and title) to mention suggestion dropdown
- Render issue mentions with CircleDot icon in autocomplete popup
- Issue mentions serialize as [MUL-117 Title](mention://issue/id) (no @ prefix)
- Markdown renderer shows issue mentions as clickable links to /issues/:id
- Backend mentionRe regex updated to match issue mention type

* feat(mentions): auto-expand issue identifiers and add mention format to agent instructions

1. Path A — CLAUDE.md template (runtime_config.go):
   Add a "## Mentions" section teaching agents the mention serialization
   format for issues, members, and agents. All agents automatically
   receive this via the auto-generated CLAUDE.md.

2. Approach 2 — Server-side auto-conversion (internal/mention/):
   New ExpandIssueIdentifiers() utility that scans comment content for
   bare issue identifiers (e.g. MUL-117) and replaces them with
   [MUL-117](mention://issue/<uuid>) mention links. Skips code blocks,
   inline code, and existing markdown links. Integrated into both:
   - handler.CreateComment (HTTP API path)
   - service.createAgentComment (agent task output path)
This commit is contained in:
Bohan Jiang 2026-04-02 13:48:53 +08:00 • committed by GitHub
parent cd1b1155c1
commit f353e8db59
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8 changed files with 350 additions and 15 deletions
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13
server/internal/service/task.go
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@ -12,6 +12,7 @@ import (
"github.com/jackc/pgx/v5"
"github.com/jackc/pgx/v5/pgtype"
"github.com/multica-ai/multica/server/internal/events"
"github.com/multica-ai/multica/server/internal/mention"
"github.com/multica-ai/multica/server/internal/realtime"
"github.com/multica-ai/multica/server/internal/util"
db "github.com/multica-ai/multica/server/pkg/db/generated"
@ -454,6 +455,13 @@ func (s *TaskService) createAgentComment(ctx context.Context, issueID, agentID p
if content == "" {
return
}
// Look up issue to get workspace ID for mention expansion and broadcasting.
issue, err := s.Queries.GetIssue(ctx, issueID)
if err != nil {
return
}
// Expand bare issue identifiers (e.g. MUL-117) into mention links.
content = mention.ExpandIssueIdentifiers(ctx, s.Queries, issue.WorkspaceID, content)
comment, err := s.Queries.CreateComment(ctx, db.CreateCommentParams{
IssueID: issueID,
AuthorType: "agent",
@ -465,11 +473,6 @@ func (s *TaskService) createAgentComment(ctx context.Context, issueID, agentID p
if err != nil {
return
}
// Look up issue to get workspace ID for broadcasting
issue, err := s.Queries.GetIssue(ctx, issueID)
if err != nil {
return
}
s.Bus.Publish(events.Event{
Type: protocol.EventCommentCreated,
WorkspaceID: util.UUIDToString(issue.WorkspaceID),