Remove [[wiki-links]], backlinks and the graph

Operator, 2026-08-22 (note 2897): ThoughtSync is an intermediary surface. You
write here because it's easy — a notebook in your pocket — and later you recall
the thing and go finish it somewhere else. Recall is the product; organization
is secondary. A linking system is organization, and it isn't what this is for.

So: `[[wiki-links]]`, backlinks, the `[[` autocomplete, the note_links table,
`/api/notes/link-search`, `/api/notes/<id>/backlinks`, the whole graph blueprint
and GraphView. Rust core loses `extract_links`, `backlinks`, `link_search` and
`create_titled`; the desktop loses the three Tauri commands that exposed them.

This subsumes 982d24c rather than reverting it. That commit bound links to a
note id so a rename would stop rewriting other notes' bodies — real infra, but
infra for a feature that is now gone, and nothing it added survives. Alembic
0023 stays in the chain anyway: it shipped in an image and may already be
applied, and deleting an applied revision strands a database's version pointer.
0024 drops the table and takes the column with it. The history stays honest
about the fact that it existed for a day.

Two things deliberately kept, because they were serving recall and only
incidentally serving links:

- `/api/notes/titles` and the titles store. The command palette lists them so
  you can jump to a note by name. `resolve()` — the name→note lookup that only
  linking needed — is gone.
- `display_title`. Every note still has a name for search results and export
  filenames. What that name is FOR changed; that it exists did not.

`notes/links.py` is now `notes/tags.py`, holding the #tag→label reconciliation
it always also owned. A file called links.py with no links in it would have been
exactly the drift this removal is meant to end.

Also swept out on the way: `_escape_like`, whose only caller was link-search,
and the `graph` icon. Nothing lost that a person typed — note_links was always
derived, and the `[[text]]` is still sitting in every body it was written in.

frontend/src/components/NoteEditor.vue

@@ -3,7 +3,6 @@ import { computed, nextTick, onMounted, ref, watch } from "vue";
 import { repo } from "../adapters";
 import { useNotesStore } from "../stores/notes";
 import { useConfigStore } from "../stores/config";
-import { useTitlesStore, type TitleEntry } from "../stores/titles";
 import ColorPicker from "./ColorPicker.vue";
 import Icon from "./Icon.vue";
 import LabelPicker from "./LabelPicker.vue";
@@ -27,7 +26,6 @@ const props = withDefaults(defineProps<{ note?: Note | null; initialBody?: strin
 const emit = defineEmits<{ (e: "close"): void; (e: "navigate", id: string): void }>();
 const notes = useNotesStore();
 const config = useConfigStore();
-const titles = useTitlesStore();
 
 const noteId = ref<string | null>(props.note?.id ?? null);
 const title = ref(props.note?.title ?? "");
@@ -40,7 +38,6 @@ const root = ref<HTMLElement | null>(null);
 const bodyInput = ref<HTMLTextAreaElement | null>(null);
 const fileInput = ref<HTMLInputElement | null>(null);
 const uploadError = ref("");
-const backlinks = ref<{ id: string; title: string }[]>([]);
 
 // Baseline for edit-mode change detection (save only when text actually changed).
 const baseline = ref<{ title: string | null; body: string; color: NoteColor }>({
@@ -163,7 +160,6 @@ function resetCompose(): void {
   labelList.value = [];
   createKind.value = "text";
   baseline.value = { title: null, body: "", color: "default" };
-  linkMenu.value = false;
   uploadError.value = "";
 }
 
@@ -242,22 +238,7 @@ function onBackdropMousedown(): void {
   void dismiss();
 }
 
-async function loadBacklinks(): Promise<void> {
-  if (!noteId.value) {
-    backlinks.value = [];
-    return;
-  }
-  try {
-    backlinks.value = await repo.notes.backlinks(noteId.value);
-  } catch {
-    backlinks.value = [];
-  }
-}
-watch(() => noteId.value, loadBacklinks);
-
 onMounted(async () => {
-  void titles.load();
-  void loadBacklinks();
   await nextTick();
   const el = bodyInput.value;
   el?.focus();
@@ -265,99 +246,6 @@ onMounted(async () => {
   if (el) el.selectionStart = el.selectionEnd = el.value.length;
 });
 
-// ---- outgoing links (edit mode) ----
-//
-// Two sources, in order. The note's SAVED links carry the server's binding, so a
-// target that has since been renamed still resolves and is listed under its current
-// name. A link just typed into the textarea has no saved row yet, and the name index
-// is the best that can be said about it until the note is saved.
-const outgoingLinks = computed(() => {
-  const boundByNorm = new Map((props.note?.links ?? []).map((l) => [l.norm, l]));
-  const re = /\[\[([^[\]]+)\]\]/g;
-  const seen = new Set<string>();
-  const out: { title: string; id: string | null }[] = [];
-  let match: RegExpExecArray | null;
-  while ((match = re.exec(body.value)) !== null) {
-    const t = match[1].trim();
-    const key = t.toLowerCase();
-    if (t && !seen.has(key)) {
-      seen.add(key);
-      const hit = boundByNorm.get(key);
-      out.push(hit ? { title: hit.title, id: hit.id } : { title: t, id: titles.resolve(t)?.id ?? null });
-    }
-  }
-  return out;
-});
-
-async function openLink(link: { title: string; id: string | null }) {
-  if (link.id) {
-    emit("navigate", link.id);
-    return;
-  }
-  const created = await notes.createTitled(link.title);
-  await titles.reload();
-  emit("navigate", created.id);
-}
-
-// ---- [[ link autocomplete in the body textarea ----
-const linkMenu = ref(false);
-const linkQuery = ref("");
-const linkStart = ref(-1);
-const linkSelected = ref(0);
-const linkMatches = ref<TitleEntry[]>([]);
-let linkTimer: ReturnType<typeof setTimeout> | undefined;
-
-function refreshLinkMatches() {
-  if (linkTimer) clearTimeout(linkTimer);
-  const q = linkQuery.value.trim();
-  linkTimer = setTimeout(async () => {
-    try {
-      const results = await repo.notes.linkSearch(q);
-      linkMatches.value = results.filter((r) => r.id !== noteId.value).slice(0, 8);
-    } catch {
-      linkMatches.value = [];
-    }
-    linkSelected.value = 0;
-  }, 120);
-}
-
-function onBodyInput() {
-  const el = bodyInput.value;
-  if (!el) return;
-  const caret = el.selectionStart ?? 0;
-  const text = body.value.slice(0, caret);
-  const open = text.lastIndexOf("[[");
-  if (open === -1) {
-    linkMenu.value = false;
-    return;
-  }
-  const between = text.slice(open + 2);
-  if (between.includes("]") || between.includes("\n")) {
-    linkMenu.value = false;
-    return;
-  }
-  linkQuery.value = between;
-  linkStart.value = open;
-  linkSelected.value = 0;
-  linkMenu.value = true;
-  refreshLinkMatches();
-}
-
-function insertLink(t: string) {
-  const el = bodyInput.value;
-  const caret = el?.selectionStart ?? body.value.length;
-  const before = body.value.slice(0, linkStart.value);
-  const after = body.value.slice(caret);
-  const insertion = `[[${t}]]`;
-  body.value = before + insertion + after;
-  linkMenu.value = false;
-  const pos = before.length + insertion.length;
-  void nextTick(() => {
-    el?.focus();
-    el?.setSelectionRange(pos, pos);
-  });
-}
-
 function onBodyKeydown(e: KeyboardEvent) {
   // Compose: Shift+Enter saves the note and starts a fresh one (rapid capture).
   if (isCreate.value && e.key === "Enter" && e.shiftKey) {
@@ -365,25 +253,6 @@ function onBodyKeydown(e: KeyboardEvent) {
     void commitAndContinue();
     return;
   }
-  if (!linkMenu.value || linkMatches.value.length === 0) return;
-  if (e.key === "ArrowDown") {
-    e.preventDefault();
-    linkSelected.value = Math.min(linkSelected.value + 1, linkMatches.value.length - 1);
-  } else if (e.key === "ArrowUp") {
-    e.preventDefault();
-    linkSelected.value = Math.max(linkSelected.value - 1, 0);
-  } else if (e.key === "Enter" || e.key === "Tab") {
-    const m = linkMatches.value[linkSelected.value];
-    if (m) {
-      e.preventDefault();
-      insertLink(m.title);
-    }
-  } else if (e.key === "Escape") {
-    // Close only the menu — don't let Esc bubble to the frame's close/commit.
-    e.preventDefault();
-    e.stopPropagation();
-    linkMenu.value = false;
-  }
 }
 
 function onTitleEnter(e: KeyboardEvent) {
@@ -694,37 +563,15 @@ function revPreview(rev: NoteRevision): string {
           @keydown.enter="onTitleEnter"
         />
 
-        <div v-if="!showChecklist" class="relative">
-          <textarea
-            ref="bodyInput"
-            v-model="body"
-            rows="8"
-            :placeholder="bodyPlaceholder"
-            class="w-full resize-none bg-transparent text-sm leading-relaxed outline-none placeholder:text-neutral-400"
-            @input="onBodyInput"
-            @keydown="onBodyKeydown"
-          />
-          <ul
-            v-if="linkMenu && linkMatches.length"
-            class="absolute left-0 top-full z-10 mt-1 max-h-48 w-64 overflow-y-auto rounded-lg border border-neutral-200 bg-white p-1 shadow-lg dark:border-neutral-700 dark:bg-neutral-800"
-          >
-            <li v-for="(m, i) in linkMatches" :key="m.id">
-              <button
-                type="button"
-                class="flex w-full items-center rounded-md px-2 py-1.5 text-left text-sm"
-                :class="
-                  i === linkSelected
-                    ? 'bg-brand/15 text-brand-700 dark:text-brand'
-                    : 'hover:bg-neutral-100 dark:hover:bg-neutral-700'
-                "
-                @mousemove="linkSelected = i"
-                @mousedown.prevent="insertLink(m.title)"
-              >
-                <span class="truncate">{{ m.title }}</span>
-              </button>
-            </li>
-          </ul>
-        </div>
+        <textarea
+          v-if="!showChecklist"
+          ref="bodyInput"
+          v-model="body"
+          rows="8"
+          :placeholder="bodyPlaceholder"
+          class="w-full resize-none bg-transparent text-sm leading-relaxed outline-none placeholder:text-neutral-400"
+          @keydown="onBodyKeydown"
+        />
         <NoteChecklist v-else class="py-1" :note-id="liveNote.id" :items="liveNote.items" editable />
 
         <div v-if="labelList.length" class="flex flex-wrap gap-1.5 pt-1">
@@ -793,43 +640,6 @@ function revPreview(rev: NoteRevision): string {
           </button>
         </div>
 
-        <div
-          v-if="!isCreate && (outgoingLinks.length || backlinks.length)"
-          class="flex flex-col gap-2 border-t border-neutral-100 pt-2 dark:border-neutral-800"
-        >
-          <div v-if="outgoingLinks.length">
-            <p class="mb-1 text-xs font-semibold uppercase tracking-wide text-neutral-400">Links</p>
-            <div class="flex flex-wrap gap-1.5">
-              <button
-                v-for="link in outgoingLinks"
-                :key="link.title"
-                type="button"
-                class="inline-flex items-center gap-1 rounded-full px-2 py-0.5 text-xs"
-                :class="
-                  link.id
-                    ? 'bg-brand/15 text-brand-700 dark:text-brand'
-                    : 'bg-black/5 text-neutral-500 dark:bg-white/10 dark:text-neutral-400'
-                "
-                :title="link.id ? `Open ${link.title}` : `Create ${link.title}`"
-                @click="openLink(link)"
-              >
-                {{ link.title }}<span v-if="!link.id" class="opacity-60">＋</span>
-              </button>
-            </div>
-          </div>
-          <div v-if="backlinks.length">
-            <p class="mb-1 text-xs font-semibold uppercase tracking-wide text-neutral-400">Linked from</p>
-            <div class="flex flex-wrap gap-1.5">
-              <button
-                v-for="b in backlinks"
-                :key="b.id"
-                type="button"
-                class="inline-flex items-center rounded-full bg-black/5 px-2 py-0.5 text-xs text-neutral-600 hover:bg-black/10 dark:bg-white/10 dark:text-neutral-300"
-                @click="emit('navigate', b.id)"
-              >
-                {{ b.title }}
-              </button>
-            </div>
           </div>
         </div>