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>
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