Promote tracker patterns to org third parties via worker

Manual moves of a non-extension TrackerPattern lacking a ThirdPartyID
now request mapping, which the tracker-mapping worker resolves with a
four-stage pipeline: exact common_third_party_id link, heuristic
ranking, agent disambiguation, and finally CreateFromCommon. Existing
fuzzy-matched org rows are tagged with common_third_party_id so the
next promotion takes the O(1) exact-link path.

The matching primitives live in pkg/thirdparty (RankCandidates,
LinkToCommon, CreateFromCommon, ScoredCandidate, threshold constants)
so the disambiguation agent and the heuristic share one candidate
type. Cookiebanner orchestrates them; cookie-banner-specific concerns
(pattern -> common-pattern -> common-party navigation, the EXTENSION
gate, and structured logs) stay in the worker.

Signed-off-by: Émile Ré <emile@probo.com>

pkg/coredata/third_party.go

@@ -645,6 +645,7 @@ func (v *ThirdParty) Update(
 	q := `
 UPDATE third_parties
 SET
+	common_third_party_id = @common_third_party_id,
 	name = @name,
 	description = @description,
 	category = @category,
@@ -675,6 +676,7 @@ WHERE %s
 	args := pgx.StrictNamedArgs{
 		"third_party_id":                   v.ID,
 		"updated_at":                       time.Now(),
+		"common_third_party_id":            v.CommonThirdPartyID,
 		"name":                             v.Name,
 		"description":                      v.Description,
 		"category":                         v.Category,