diff --git a/backend/app/services/download_backends.py b/backend/app/services/download_backends.py
index 082b92b..fab1bb5 100644
--- a/backend/app/services/download_backends.py
+++ b/backend/app/services/download_backends.py
@@ -25,13 +25,17 @@ from pathlib import Path
 
 from .gallery_dl import DownloadResult, ErrorType
 from .patreon_ingester import PatreonIngester
-from .patreon_resolver import resolve_campaign_id_for_source
+from .patreon_resolver import extract_vanity, resolve_campaign_id_for_source
 
 # Platforms whose download + verify go through the native ingester rather than
 # gallery-dl. gallery-dl still serves every other platform (subscribestar,
 # hentaifoundry, discord, pixiv, deviantart) unchanged.
 NATIVE_INGESTER_PLATFORMS = frozenset({"patreon"})
 
+# Mirrors patreon_resolver._CAMPAIGNS_URL — surfaced in resolution-failure
+# messages so the operator sees the exact lookup endpoint that was hit.
+_CAMPAIGNS_API = "https://www.patreon.com/api/campaigns"
+
 
 def uses_native_ingester(platform: str) -> bool:
     """True when `platform` is served by the native ingester (not gallery-dl).
@@ -93,15 +97,19 @@ async def _run_native_ingester(
         ctx["url"], ctx["cookies_path"], overrides
     )
     if not campaign_id:
+        url = ctx["url"]
+        vanity = extract_vanity(url)
         return (
             DownloadResult(
                 success=False,
-                url=ctx["url"],
+                url=url,
                 artist_slug=ctx["artist_slug"],
                 platform="patreon",
                 error_type=ErrorType.NOT_FOUND,
                 error_message=(
-                    "Could not resolve Patreon campaign id from the source URL "
+                    f"Could not resolve Patreon campaign id. source_url={url!r}; "
+                    f"vanity={vanity!r}; "
+                    f"lookup=GET {_CAMPAIGNS_API}?filter[vanity]={vanity or ''} "
                     "(vanity lookup failed — cookies expired or creator moved?)"
                 ),
             ),
@@ -172,9 +180,11 @@ async def preview_source(
         url, cookies_path, config_overrides or {}
     )
     if not campaign_id:
+        vanity = extract_vanity(url)
         return {
             "error": (
-                "Couldn't resolve the campaign id from the source URL "
+                f"Couldn't resolve the campaign id. source_url={url!r}; "
+                f"vanity={vanity!r}; lookup=GET {_CAMPAIGNS_API}?filter[vanity]={vanity or ''} "
                 "(cookies expired, or the creator moved/renamed?)."
             )
         }
diff --git a/backend/app/services/download_service.py b/backend/app/services/download_service.py
index 66e960b..0fc04e6 100644
--- a/backend/app/services/download_service.py
+++ b/backend/app/services/download_service.py
@@ -269,6 +269,11 @@ class DownloadService:
         source_row = self.sync_session.get(Source, ctx["source_id"])
 
         import_summary = {"attached": 0, "skipped": 0, "errors": 0}
+        # Archives detected but captured WITHOUT extracting any image (probe
+        # rejected / corrupt / missing extractor backend). Surfaced on the event
+        # so a post showing "no images" beside a zip is diagnosable (plan
+        # follow-up 2026-06-06 — the recurring archive-association report).
+        unextracted_archives: list[dict] = []
         bytes_downloaded = 0
 
         loop = asyncio.get_running_loop()
@@ -322,6 +327,17 @@ class DownloadService:
                 # mirror duplicate_hash cleanup so we don't keep two copies.
                 # Operator-flagged 2026-06-02 (Lustria OST zip).
                 import_summary["attached"] += 1
+                # An archive captured WITHOUT extracting any image carries a
+                # reason on result.error — record it so the event explains the
+                # "no images beside a zip" symptom instead of staying silent.
+                if result.error:
+                    unextracted_archives.append(
+                        {"file": path.name, "reason": result.error}
+                    )
+                    log.warning(
+                        "archive captured unextracted (%s): %s",
+                        path.name, result.error,
+                    )
                 try:
                     bytes_downloaded += path.stat().st_size  # noqa: ASYNC240
                 except OSError:
@@ -403,6 +419,10 @@ class DownloadService:
             "duration_seconds": dl_result.duration_seconds,
             "quarantined_paths": dl_result.quarantined_paths or None,
             "import_summary": import_summary,
+            # Archives detected but captured without extracting an image — the
+            # recurring "post shows a zip but no images" report. Each entry is
+            # {file, reason}; None when every archive extracted cleanly.
+            "unextracted_archives": unextracted_archives or None,
         }
         await self._update_source_health(
             source_id=ctx["source_id"], status=status, error_message=ev.error,
diff --git a/backend/app/services/importer.py b/backend/app/services/importer.py
index e1acc6e..c954bfe 100644
--- a/backend/app/services/importer.py
+++ b/backend/app/services/importer.py
@@ -430,13 +430,17 @@ class Importer:
             self._capture_attachment(
                 source, post=post, artist=artist_use, resolved=True,
             )
-            return ImportResult(status="attached")
+            reason = f"archive probe rejected, captured unextracted: {probe.reason}"
+            log.warning("%s: %s", source.name, reason)
+            return ImportResult(status="attached", error=reason)
 
         artist_use = artist if artist is not None else self._resolve_artist(source)
         post = self._post_for_sidecar(source, artist_use)
         member_ids: list[int] = []
+        member_total = 0
         with extract_archive(source) as members:
             for _name, member_path in members:
+                member_total += 1
                 if not is_supported(member_path):
                     continue  # non-media preserved via the stored archive
                 res = self._import_media(
@@ -453,7 +457,19 @@ class Importer:
                 status="imported", image_id=member_ids[0],
                 member_image_ids=member_ids,
             )
-        return ImportResult(status="attached")
+        # No images landed — surface WHY so a post showing "no images" beside an
+        # archive is diagnosable instead of silent. Zero members usually means
+        # the extractor backend is missing/failed (unar for rar, py7zr for 7z)
+        # or the file is corrupt; non-zero-but-no-images means it held only
+        # non-media files.
+        reason = (
+            "archive extracted but held no supported image/video members"
+            if member_total
+            else "archive yielded no members (unsupported/corrupt, or the "
+            "extractor backend failed)"
+        )
+        log.warning("%s: %s", source.name, reason)
+        return ImportResult(status="attached", error=reason)
 
     def _import_media(
         self, source: Path, attribution_path: Path,
diff --git a/backend/app/services/patreon_ingester.py b/backend/app/services/patreon_ingester.py
index 5915da7..be2c973 100644
--- a/backend/app/services/patreon_ingester.py
+++ b/backend/app/services/patreon_ingester.py
@@ -45,7 +45,7 @@ from .patreon_client import (
     PatreonDriftError,
 )
 from .patreon_downloader import PatreonDownloader
-from .patreon_resolver import resolve_campaign_id_for_source
+from .patreon_resolver import extract_vanity, resolve_campaign_id_for_source
 
 __all__ = [
     "DEAD_LETTER_THRESHOLD",
@@ -186,9 +186,11 @@ async def verify_patreon_credential(
     """
     campaign_id, _ = await resolve_campaign_id_for_source(url, cookies_path, overrides)
     if not campaign_id:
+        vanity = extract_vanity(url)
         return None, (
-            "Couldn't resolve the Patreon campaign id from the source URL — "
-            "can't verify (cookies expired, or the creator moved/renamed?)."
+            f"Couldn't resolve the Patreon campaign id — can't verify. "
+            f"source_url={url!r}; vanity={vanity!r} "
+            "(cookies expired, or the creator moved/renamed?)."
         )
     client = PatreonClient(cookies_path)
     loop = asyncio.get_running_loop()
diff --git a/backend/app/services/patreon_resolver.py b/backend/app/services/patreon_resolver.py
index fb29661..c8acd2c 100644
--- a/backend/app/services/patreon_resolver.py
+++ b/backend/app/services/patreon_resolver.py
@@ -41,6 +41,19 @@ _USER_AGENT = (
 )
 _TIMEOUT_SECONDS = 10.0
 
+# Fallback resolution: Patreon's `/api/campaigns?filter[vanity]=` lookup has
+# proven unreliable (returns empty `data` for creators that clearly exist —
+# operator-flagged 2026-06-06). gallery-dl never used that endpoint; it scrapes
+# the campaign id out of the creator page's bootstrap JSON. We do the same as a
+# fallback: fetch the creator page HTML and pull the first campaign id out of
+# any of these embeddings (ordered most- to least-specific).
+_PAGE_CAMPAIGN_ID_PATTERNS = (
+    re.compile(r'"id":\s*"(\d+)",\s*"type":\s*"campaign"'),
+    re.compile(r'"campaign":\s*\{\s*"data":\s*\{\s*"id":\s*"(\d+)"'),
+    re.compile(r"/api/campaigns/(\d+)"),
+    re.compile(r'"campaign_id":\s*"?(\d+)'),
+)
+
 
 def _load_cookie_jar(cookies_path: str | None) -> http.cookiejar.MozillaCookieJar | None:
     if not cookies_path or not os.path.isfile(cookies_path):
@@ -55,6 +68,15 @@ def _load_cookie_jar(cookies_path: str | None) -> http.cookiejar.MozillaCookieJa
 
 
 def _sync_lookup(vanity: str, cookies_path: str | None) -> str | None:
+    """Resolve a vanity to a campaign id: try the campaigns API first (cheap,
+    structured), then fall back to scraping the creator page (robust against the
+    API's empty-data failures). Returns None only when both miss."""
+    return _lookup_via_api(vanity, cookies_path) or _lookup_via_page(
+        vanity, cookies_path
+    )
+
+
+def _lookup_via_api(vanity: str, cookies_path: str | None) -> str | None:
     jar = _load_cookie_jar(cookies_path)
     headers = {
         "User-Agent": _USER_AGENT,
@@ -102,6 +124,50 @@ def _sync_lookup(vanity: str, cookies_path: str | None) -> str | None:
     return campaign_id
 
 
+def _scrape_campaign_id(html: str) -> str | None:
+    """First campaign id found in creator-page HTML via the known embeddings."""
+    if not isinstance(html, str):
+        return None
+    for pat in _PAGE_CAMPAIGN_ID_PATTERNS:
+        m = pat.search(html)
+        if m:
+            return m.group(1)
+    return None
+
+
+def _lookup_via_page(vanity: str, cookies_path: str | None) -> str | None:
+    """Fallback: GET the creator page and scrape the campaign id from the page
+    bootstrap (gallery-dl's method). Tries both the bare and `/c/` vanity paths
+    Patreon redirects between. Never raises."""
+    jar = _load_cookie_jar(cookies_path)
+    headers = {"User-Agent": _USER_AGENT, "Accept": "text/html"}
+    for page_url in (
+        f"https://www.patreon.com/{vanity}",
+        f"https://www.patreon.com/c/{vanity}",
+    ):
+        try:
+            resp = requests.get(
+                page_url,
+                headers=headers,
+                cookies=jar,
+                timeout=_TIMEOUT_SECONDS,
+                allow_redirects=True,
+            )
+        except requests.RequestException as exc:
+            log.warning("Patreon creator-page fetch failed for %s: %s", page_url, exc)
+            continue
+        if resp.status_code != 200:
+            continue
+        campaign_id = _scrape_campaign_id(resp.text)
+        if campaign_id:
+            log.info(
+                "Resolved Patreon vanity=%s → campaign_id=%s via creator page",
+                vanity, campaign_id,
+            )
+            return campaign_id
+    return None
+
+
 async def resolve_campaign_id(
     vanity: str,
     cookies_path: str | None,
diff --git a/backend/app/services/tag_service.py b/backend/app/services/tag_service.py
index 60ffddd..bfdef07 100644
--- a/backend/app/services/tag_service.py
+++ b/backend/app/services/tag_service.py
@@ -17,15 +17,19 @@ log = logging.getLogger(__name__)
 
 
 def normalize_tag_name(name: str) -> str:
-    """Canonical tag form (#701): collapse whitespace + Title Case.
+    """Canonical tag form (#701): collapse whitespace + capitalize the first
+    letter of each word, PRESERVING the rest of the word.
 
     Per-word capitalize (NOT str.title(), which mangles apostrophes:
-    don't → Don'T). Lowercasing the word tail also folds ALL-CAPS input
-    (HATSUNE MIKU → Hatsune Miku); acronym casing is sacrificed, an accepted
-    Title-Case trade-off (operator-chosen 2026-06-06).
+    don't → Don'T). The word tail is left untouched so acronyms survive
+    (DC stays DC, NSFW stays NSFW) — operator-revised 2026-06-06: protecting
+    acronyms matters more than folding ALL-CAPS input. This MATCHES
+    ml/tag_name._title_word, so a tag suggested by the Camie tagger keeps the
+    exact casing the suggestion UI showed when it round-trips through the
+    create endpoint on Accept.
     """
     return " ".join(
-        w[:1].upper() + w[1:].lower() for w in (name or "").split()
+        w[:1].upper() + w[1:] for w in (name or "").split()
     )
 
 
diff --git a/frontend/src/components/posts/PostCard.vue b/frontend/src/components/posts/PostCard.vue
index 29aa76d..cd1c2aa 100644
--- a/frontend/src/components/posts/PostCard.vue
+++ b/frontend/src/components/posts/PostCard.vue
@@ -34,7 +34,10 @@
           >
             <img :src="hero.thumbnail_url" alt="hero thumbnail" loading="lazy" />
           </button>
-          <div v-if="rail.length || moreCount" class="fc-post-card__rail">
+          <div
+            v-if="rail.length || moreCount" class="fc-post-card__rail"
+            :style="{ '--fc-rail-cols': railCols }"
+          >
             <button
               v-for="t in rail" :key="t.image_id" type="button"
               class="fc-post-card__rail-cell"
@@ -117,13 +120,29 @@ const totalImages = computed(() => images.value.length + (props.post.thumbnails_
 const plainTitle = computed(() => toPlainText(props.post.post_title))
 
 const hero = computed(() => images.value[0])
-const rail = computed(() => images.value.slice(1, 4))
+// The thumbnail strip spans the hero's full width (CSS grid, equal columns),
+// rather than a fixed 3-cell cap. Show up to RAIL_MAX cells; when there are
+// more images than fit, the last cell becomes a "+N" overflow tile so the
+// count stays accurate.
+const RAIL_MAX = 5
+const serverMore = computed(() => props.post.thumbnails_more || 0)
+const afterHero = computed(() => images.value.slice(1))
+const hasOverflow = computed(
+  () => serverMore.value > 0 || afterHero.value.length > RAIL_MAX,
+)
+const rail = computed(() =>
+  hasOverflow.value
+    ? afterHero.value.slice(0, RAIL_MAX - 1)
+    : afterHero.value.slice(0, RAIL_MAX),
+)
 const visibleCount = computed(() => (images.value.length ? 1 + rail.value.length : 0))
 const moreCount = computed(() => {
-  const more = props.post.thumbnails_more || 0
-  const extraShown = Math.max(0, images.value.length - visibleCount.value)
-  return more + extraShown
+  if (!hasOverflow.value) return 0
+  return serverMore.value + Math.max(0, images.value.length - visibleCount.value)
 })
+// Columns = thumbnails shown plus the overflow tile, so the strip fills the
+// hero's full width with equal cells.
+const railCols = computed(() => rail.value.length + (moreCount.value > 0 ? 1 : 0))
 
 const sortDateIso = computed(() => props.post.post_date || props.post.downloaded_at)
 const absoluteDate = computed(() => new Date(sortDateIso.value).toLocaleString())
@@ -279,11 +298,16 @@ function formatBytes (n) {
 .fc-post-card__hero:hover img,
 .fc-post-card__rail-cell:hover img { transform: scale(1.03); filter: brightness(1.08); }
 
+/* Equal columns spanning the hero's full width — cells stretch horizontally
+   (1fr) at a fixed height, so the strip always reaches the edge of the hero
+   regardless of how many thumbnails the post has. */
 .fc-post-card__rail {
-  display: flex; gap: 6px; margin-top: 6px; flex-wrap: wrap;
+  display: grid;
+  grid-template-columns: repeat(var(--fc-rail-cols, 3), 1fr);
+  gap: 6px; margin-top: 6px;
 }
 .fc-post-card__rail-cell {
-  width: 80px; height: 80px;
+  width: 100%; height: 84px;
   overflow: hidden; border-radius: 4px;
 }
 .fc-post-card__rail-cell img {
@@ -291,7 +315,7 @@ function formatBytes (n) {
   object-fit: cover; display: block;
 }
 .fc-post-card__rail-more {
-  width: 80px; height: 80px;
+  width: 100%; height: 84px;
   display: flex; align-items: center; justify-content: center;
   border: 1px dashed rgb(var(--v-theme-on-surface-variant));
   border-radius: 4px;
diff --git a/frontend/test/components/postCard.spec.js b/frontend/test/components/postCard.spec.js
index 3625ca1..2500b02 100644
--- a/frontend/test/components/postCard.spec.js
+++ b/frontend/test/components/postCard.spec.js
@@ -40,6 +40,30 @@ describe('PostCard', () => {
     expect(full.text()).not.toContain('Show more')
   })
 
+  const thumbs = (n) =>
+    Array.from({ length: n }, (_, i) => ({ image_id: 100 + i, thumbnail_url: `/t${i}` }))
+
+  it('fills the rail to full width (5 cells, no overflow) for a 6-image post', () => {
+    const post = { ...BASE, description_plain: 'd', thumbnails: thumbs(6), thumbnails_more: 0 }
+    const w = mountComponent(PostCard, { props: { post }, pinia: freshPinia() })
+    // hero + 5 rail thumbnails, no "+N" tile.
+    expect(w.findAll('.fc-post-card__rail-cell')).toHaveLength(5)
+    expect(w.find('.fc-post-card__rail-more').exists()).toBe(false)
+    // The grid spans the hero width via a column count == cells shown.
+    expect(w.find('.fc-post-card__rail').attributes('style')).toContain('--fc-rail-cols: 5')
+  })
+
+  it('reserves the last cell for a "+N" overflow tile when there are more images', () => {
+    const post = { ...BASE, description_plain: 'd', thumbnails: thumbs(6), thumbnails_more: 4 }
+    const w = mountComponent(PostCard, { props: { post }, pinia: freshPinia() })
+    // 4 thumbnails + 1 overflow tile == 5 columns; tile counts every hidden image.
+    expect(w.findAll('.fc-post-card__rail-cell')).toHaveLength(4)
+    const more = w.find('.fc-post-card__rail-more')
+    expect(more.exists()).toBe(true)
+    expect(more.text()).toBe('+5')
+    expect(w.find('.fc-post-card__rail').attributes('style')).toContain('--fc-rail-cols: 5')
+  })
+
   it('clicking an image opens the post-scoped modal (never expands the card)', async () => {
     const pinia = freshPinia()
     const modal = useModalStore()
diff --git a/tests/test_api_tags.py b/tests/test_api_tags.py
index c630baa..617587e 100644
--- a/tests/test_api_tags.py
+++ b/tests/test_api_tags.py
@@ -74,13 +74,14 @@ async def test_create_tag_with_kind_prefix(client):
 @pytest.mark.asyncio
 async def test_explicit_kind_overrides_prefix_parsing(client):
     """If caller passes explicit kind, don't re-parse the name —
-    colon and prefix stay literal. #701: still Title-Cased as a single word."""
+    colon and prefix stay literal. #701: first letter capitalized, tail
+    preserved (acronym-safe), so the 'S' in Saber survives."""
     resp = await client.post(
         "/api/tags", json={"name": "character:Saber", "kind": "general"}
     )
     assert resp.status_code == 201
     body = await resp.get_json()
-    assert body["name"] == "Character:saber"
+    assert body["name"] == "Character:Saber"
     assert body["kind"] == "general"
 
 
diff --git a/tests/test_patreon_resolver.py b/tests/test_patreon_resolver.py
index bbf40e4..6586e41 100644
--- a/tests/test_patreon_resolver.py
+++ b/tests/test_patreon_resolver.py
@@ -91,6 +91,41 @@ async def test_loads_cookies_file_when_present(tmp_path):
     assert kwargs.get("cookies") is not None
 
 
+@pytest.mark.asyncio
+async def test_falls_back_to_creator_page_when_api_empty():
+    """When the campaigns API returns empty data (its known failure mode), the
+    resolver scrapes the campaign id out of the creator page (gallery-dl's
+    method)."""
+    api_resp = MagicMock()
+    api_resp.status_code = 200
+    api_resp.json.return_value = {"data": []}
+    page_resp = MagicMock()
+    page_resp.status_code = 200
+    page_resp.text = (
+        '<html><script>window.patreon={"bootstrap":{"campaign":'
+        '{"data":{"id":"7654321","type":"campaign"}}}}</script></html>'
+    )
+
+    def _get(url, **kwargs):
+        return api_resp if "/api/campaigns" in url else page_resp
+
+    with patch(
+        "backend.app.services.patreon_resolver.requests.get", side_effect=_get
+    ):
+        result = await resolve_campaign_id("alice", cookies_path=None)
+    assert result == "7654321"
+
+
+def test_scrape_campaign_id_patterns():
+    from backend.app.services.patreon_resolver import _scrape_campaign_id
+
+    assert _scrape_campaign_id('foo /api/campaigns/424242 bar') == "424242"
+    assert _scrape_campaign_id('"campaign_id":"99"') == "99"
+    assert _scrape_campaign_id('{"id":"5","type":"campaign"}') == "5"
+    assert _scrape_campaign_id("no id here") is None
+    assert _scrape_campaign_id(None) is None
+
+
 # -- resolve_campaign_id_for_source (shared by download + verify) ----------
 
 
diff --git a/tests/test_tag_normalize.py b/tests/test_tag_normalize.py
index b61c383..b9c8472 100644
--- a/tests/test_tag_normalize.py
+++ b/tests/test_tag_normalize.py
@@ -87,8 +87,9 @@ async def test_dry_run_projection_counts(db):
 
 @pytest.mark.asyncio
 async def test_live_merges_case_variants_and_repoints_images(db):
+    # lowercase vs sentence-case → both canonicalize to "Hatsune Miku" and fold.
     a = await _raw_tag(db, "hatsune miku", TagKind.character)
-    b = await _raw_tag(db, "HATSUNE MIKU", TagKind.character)
+    b = await _raw_tag(db, "Hatsune miku", TagKind.character)
     i1, i2, i3 = await _img(db), await _img(db), await _img(db)
     await _link(db, i1, a.id)
     await _link(db, i2, a.id)
@@ -125,7 +126,7 @@ async def test_live_merges_case_variants_and_repoints_images(db):
 @pytest.mark.asyncio
 async def test_idempotent_second_run_is_noop(db):
     await _raw_tag(db, "kafka", TagKind.character)
-    await _raw_tag(db, "KAFKA", TagKind.character)
+    await _raw_tag(db, "Kafka", TagKind.character)
 
     first = await normalize_existing_tags(db, dry_run=False)
     assert first["groups_processed"] == 1
@@ -138,6 +139,24 @@ async def test_idempotent_second_run_is_noop(db):
     assert again["renamed"] == 0
 
 
+@pytest.mark.asyncio
+async def test_acronym_casing_is_preserved_not_folded(db):
+    """Acronym-preserving rule (2026-06-06): an already-canonical acronym tag
+    is a no-op, and an all-caps variant does NOT fold into a Title-cased one
+    (protecting DC/NSFW from becoming Dc/Nsfw is the deliberate trade)."""
+    await _raw_tag(db, "DC", TagKind.general)
+    proj = await normalize_existing_tags(db, dry_run=True)
+    assert proj["total_changes"] == 0  # "DC" is already canonical
+
+    # All-caps and Title-case are distinct canonical forms → not merged.
+    await _raw_tag(db, "Nsfw", TagKind.general)
+    await _raw_tag(db, "NSFW", TagKind.general)
+    summary = await normalize_existing_tags(db, dry_run=False)
+    assert summary["merged"] == 0
+    assert await _count_named(db, "DC", TagKind.general) == 1
+    assert await _count_named(db, "NSFW", TagKind.general) == 1
+
+
 @pytest.mark.asyncio
 async def test_same_name_different_fandom_not_merged(db):
     f1 = await _raw_tag(db, "Bleach", TagKind.fandom)
diff --git a/tests/test_tag_service.py b/tests/test_tag_service.py
index 3cb8a9b..1dbbcb7 100644
--- a/tests/test_tag_service.py
+++ b/tests/test_tag_service.py
@@ -77,7 +77,12 @@ async def test_normalize_tag_name():
     from backend.app.services.tag_service import normalize_tag_name
     assert normalize_tag_name("hatsune miku") == "Hatsune Miku"
     assert normalize_tag_name("  looking   at  viewer ") == "Looking At Viewer"
-    assert normalize_tag_name("HATSUNE MIKU") == "Hatsune Miku"
+    # Acronym-preserving (2026-06-06): only the first letter of each word is
+    # touched, so already-uppercase tails survive (DC stays DC, not Dc).
+    assert normalize_tag_name("DC comics") == "DC Comics"
+    assert normalize_tag_name("dc") == "Dc"
+    assert normalize_tag_name("NSFW variant") == "NSFW Variant"
+    assert normalize_tag_name("HATSUNE MIKU") == "HATSUNE MIKU"
 
 
 @pytest.mark.asyncio