fix(deadlines): restore /api/events deadline rail after mig 140 column drop (t-paliad-344)

Two SELECTs still referenced paliad.deadlines.rule_id after mig 140
(Slice B.4) dropped that column in favour of sequencing_rule_id:

  - internal/services/deadline_service.go:268 — DeadlineService.
    ListVisibleForUser. Powers /api/events?type=deadline (dashboard
    deadline rail, /deadlines page, every status bucket). Threw
    `pq: column f.rule_id does not exist` on every request → 500
    for any authenticated user hitting the dashboard.

  - internal/services/projection_service.go:1250 — collectActualsForOverrides.
    Same column on `paliad.deadlines d`. Logged once per projection
    pass (`ERROR service: projection: deadlines: ...`); aliased the
    rename to `rule_id` so the receiving struct tag still scans.

Live container logs confirmed the failure mode — a 60-row burst of
`pq: column f.rule_id does not exist at position 3:36 (42703)` starting
the minute the post-B0 container came up (mig 140 had applied to the
DB but the SELECT still used the dropped name). EXPLAIN against the
live schema after the edit plans cleanly; the LEFT JOIN to
paliad.deadline_rules_unified on sequencing_rule_id was already correct
(only the SELECT projection was stale).

Root cause: mig 140 commit (1129bab) renamed the JOIN to
`f.sequencing_rule_id` but left the SELECT clause on the older name.
The model tag is already `db:"sequencing_rule_id" json:"rule_id"`, so
the wire shape is unchanged — only the column reference flips.

bun build clean, go vet ./... clean, go test ./... green.

internal/services/deadline_service.go

@@ -265,7 +265,7 @@ func (s *DeadlineService) ListVisibleForUser(ctx context.Context, userID uuid.UU
 
 	query := `
 		SELECT f.id, f.project_id, f.title, f.description, f.due_date, f.original_due_date,
-		       f.warning_date, f.source, f.rule_id, f.rule_code, f.custom_rule_text, f.status, f.completed_at,
+		       f.warning_date, f.source, f.sequencing_rule_id, f.rule_code, f.custom_rule_text, f.status, f.completed_at,
 		       f.caldav_uid, f.caldav_etag, f.notes, f.created_by,
 		       f.created_at, f.updated_at,
 		       f.approval_status, f.pending_request_id, f.approved_by, f.approved_at,

internal/services/projection_service.go

@@ -1247,7 +1247,7 @@ func (s *ProjectionService) collectActualsForOverrides(
 	}
 	var dRows []drow
 	scopeFilter := scopeProjectIDFilter("d", "project_id", projectID, directOnly)
-	q := `SELECT d.rule_id, d.rule_code, d.due_date, d.completed_at, d.status
+	q := `SELECT d.sequencing_rule_id AS rule_id, d.rule_code, d.due_date, d.completed_at, d.status
 	        FROM paliad.deadlines d
 	       WHERE ` + scopeFilter
 	if err := s.db.SelectContext(ctx, &dRows, q, projectID); err != nil {