fix(modal): accept-by-known-id keeps the raw suggestion row identity for the drop

Spreading canonical_tag_id onto a raw suggestion changed its _keyOf
identity, so _dropEverywhere missed the actual list row and the panel
kept showing an already-accepted suggestion. Pass the resolved id as an
option instead; pinned with a raw-suggestion spec.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CDgx8bQS5YrGRK76v8HUnM

frontend/src/components/modal/TagPanel.vue

@@ -131,10 +131,7 @@ async function onPickExisting(hit) {
     // (operator-asked 2026-07-03).
     const pending = suggestions.findPending(hit.kind, hit.name, hit.id)
     if (pending) {
-      await suggestions.accept({
-        ...pending,
-        canonical_tag_id: pending.canonical_tag_id ?? hit.id,
-      })
+      await suggestions.accept(pending, { tagId: hit.id })
       await host.reloadTags()
     } else {
       await host.addExistingTag(hit.id)
@@ -156,7 +153,7 @@ async function onPickNew(payload) {
     if (created && host.currentImageId === imageId) {
       const pending = suggestions.findPending(payload.kind, payload.name, created.id)
       if (pending) {
-        await suggestions.accept({ ...pending, canonical_tag_id: created.id })
+        await suggestions.accept(pending, { tagId: created.id })
       }
     }
     focusTagInput()