fix: use native Unlimited-OCR layout regions

CHANGELOG.md

@@ -9,6 +9,32 @@ Follows [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) · versioned wi
 
 ---
 
+## [1.26.4] — 2026-09-09
+
+### Added
+- **Native Baidu Unlimited-OCR Layout Parsing.** Magazine ingestion now uses Unlimited-OCR's documented
+  `document parsing.` mode and consumes its `<|det|>` bounding-box regions. Images, non-text graphics, charts and
+  tables are retained as visual regions instead of being mixed into narratable article prose; captions remain captions.
+
+### Changed
+- **Magazine OCR Preview Uses Its Space.** The source page fills the available preview height while preserving its
+  aspect ratio. A draggable divider lets readers allocate space between the page and recognised text, and remembers
+  the choice.
+- **Character Sheets Read Like Profiles.** Profile fields are now one-column entries with a bold heading and normal
+  prose beneath it, rather than compact label/value columns. The live passage/output drawer stays bottom-anchored and
+  its top grip resizes from the expected edge.
+
+### Fixed
+- **Unlimited-OCR Repetition Guard Was Not Activated.** Requests now include the model's required per-request
+  n-gram settings and `gundam` image mode. Repeated fabricated LaTex and instruction-echo responses are rejected so
+  fallback OCR can be used instead of saving poisoned page text.
+- **Character Line Totals Missed Aliases.** A profile now totals dialogue credited to its canonical name and recorded
+  identity aliases (for example, `Larissa` and `Schwester Larissa`) and refreshes the total during casting.
+- **Page Furniture Does Not Become Article Text.** Native OCR regions now identify headers, footers and page numbers
+  as page furniture, keeping them out of narration while preserving their position for review.
+
+---
+
 ## [1.26.3] — 2026-09-09
 
 ### Fixed

VERSION

@@ -1 +1 @@
-1.26.3
+1.26.4

core/magazine.py

@@ -742,6 +742,8 @@ _VISION_LABEL_TYPES = {
     "title": BLOCK_TITLE,
     "heading": BLOCK_HEADING,
     "caption": BLOCK_CAPTION,
+    "image_caption": BLOCK_CAPTION,
+    "table_caption": BLOCK_CAPTION,
     "headline": BLOCK_TITLE,
     "article_headline": BLOCK_TITLE,
     "paragraph": BLOCK_BODY,
@@ -758,6 +760,8 @@ _VISION_LABEL_TYPES = {
     "graphic": BLOCK_CHART,
     "diagram": BLOCK_CHART,
     "table": BLOCK_TABLE,
+    "formula": BLOCK_CODE,
+    "list": BLOCK_BODY,
     "code": BLOCK_CODE,
     "code_block": BLOCK_CODE,
     "advertisement": BLOCK_AD,
@@ -769,6 +773,15 @@ _VISION_LABEL_TYPES = {
 # the next such marker. Confirmed live against Baidu Unlimited-OCR's actual
 # output shape: "text [241, 90, 588, 249]Battery technology is entering...".
 _VISION_REGION = re.compile(r"(?m)^(\w+)\s*\[\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*\]")
+# Native Baidu Unlimited-OCR document-parsing output. The model card emits
+# one marker per detected region, such as
+# ``<|det|>table [0,0,999,999]<|/det|>...``. Its categories are precisely
+# what we need to retain charts/tables/images as visual blocks instead of
+# treating their axis labels as article prose.
+_UNLIMITED_OCR_REGION = re.compile(
+    r"(?m)^<\|det\|>\s*(.*?)\s*(?:\[\s*(-?\d+(?:\.\d+)?)\s*,\s*"
+    r"(-?\d+(?:\.\d+)?)\s*,\s*(-?\d+(?:\.\d+)?)\s*,\s*"
+    r"(-?\d+(?:\.\d+)?)\s*\])?\s*<\|/det\|>")
 
 
 def ocr_quality_score(text: str) -> float:
@@ -848,6 +861,42 @@ def parse_vision_ocr_regions(raw: str) -> list[dict[str, Any]]:
     return regions
 
 
+def parse_unlimited_ocr_regions(raw: str) -> list[dict[str, Any]]:
+    """Parse Unlimited-OCR's native ``<|det|>`` document-layout markers.
+
+    Bounding boxes are in its 0–999-ish image coordinate space; callers mark
+    them for conversion to the rendered page's pixels before building blocks.
+    A `[Non-Text]` region is a real visual object even when it has no text.
+    """
+    matches = list(_UNLIMITED_OCR_REGION.finditer(raw or ""))
+    regions = []
+    for i, match in enumerate(matches):
+        raw_label = (match.group(1) or "").strip().strip("[]")
+        label = raw_label.lower().replace("-", "_").replace(" ", "_")
+        coords = match.groups()[1:]
+        if len(coords) != 4 or any(v is None for v in coords):
+            continue
+        x0, y0, x1, y1 = (float(v) for v in coords)
+        if x1 <= x0 or y1 <= y0:
+            continue
+        start = match.end()
+        end = matches[i + 1].start() if i + 1 < len(matches) else len(raw or "")
+        text = (raw or "")[start:end].strip()
+        # The model's generic Non-Text label is an image/figure. It must be
+        # retained even empty, so crop_visual_regions can preserve it.
+        if label in {"non_text", "nontext"}:
+            label = "image"
+        if not text and _VISION_LABEL_TYPES.get(label) not in VISUAL_TYPES:
+            continue
+        regions.append({
+            "label": label,
+            "bbox": [x0, y0, x1 - x0, y1 - y0],
+            "text": text,
+            "native_normalized_bbox": True,
+        })
+    return regions
+
+
 def _whole_page_region(content: str, png_path: Path) -> list[dict[str, Any]] | None:
     """Fallback for an engine that answers with plain text and no coordinate
     markers at all (confirmed live: KDL Frontier Parser nano -- fast, but no
@@ -871,10 +920,18 @@ def _whole_page_region(content: str, png_path: Path) -> list[dict[str, Any]] | N
     escaped_newlines = len(re.findall(r"\\n", text))
     equation_tokens = len(re.findall(r"`?\s*\\?equation\b", text, re.IGNORECASE))
     prompt_echo = "do not use special symbols" in text.lower()
+    # Another observed loop starts with genuine page text and then repeats a
+    # fabricated LaTex fragment (``\\therefore m = \\frac{3}{11}``) until the
+    # response limit.  It has no instruction echo or `equation` token, so it
+    # needs its own narrow signature.  Requiring both uncommon controls many
+    # times avoids rejecting ordinary prose that merely mentions one formula.
+    therefore_tokens = len(re.findall(r"\\therefore\b", text, re.IGNORECASE))
+    fraction_tokens = len(re.findall(r"\\frac\s*\{", text, re.IGNORECASE))
+    latex_loop = therefore_tokens >= 4 and fraction_tokens >= 4
     if (escaped_newlines >= 4 and equation_tokens >= 4) or (
         prompt_echo and escaped_newlines >= 2 and equation_tokens >= 2
-    ):
+    ) or latex_loop:
-        logging.getLogger(__name__).warning("Vision OCR returned instruction-echo artifact; discarding response")
+        logging.getLogger(__name__).warning("Vision OCR returned a repeated formatting artifact; discarding response")
         return None
     if len(text) < 20 or ocr_quality_score(text) < _VISION_QUALITY_THRESHOLD:
         return None
@@ -911,22 +968,24 @@ def vision_ocr_page(png_path: Path, base_url: str, model: str,
     if not urlsplit(base_url).path:
         base_url += "/v1"
 
+    unlimited_ocr = "unlimited-ocr" in model.lower()
+    prompt = "document parsing." if unlimited_ocr else (
+        "Recognise the page layout and transcribe visible text verbatim. "
+        "Return one region per headline, paragraph, image, chart, table, "
+        "code box, caption, header, footer or page number. Use the format "
+        "label [x0, y0, x1, y1]transcription with pixel coordinates in the "
+        "supplied image, one region starting on each new line. Labels: "
+        "title, paragraph, image, chart, table, code, caption, header, "
+        "footer, page_number, aside_text. Enclose a whole chart or table "
+        "in one box, not separate axis labels or cells. Preserve table "
+        "rows and columns as Markdown and code indentation and line breaks. "
+        "Images may have empty transcription; do not invent descriptions. "
+        "Do not merge neighbouring articles or include commentary."
+    )
     payload = {
         "model": model,
         "messages": [{"role": "user", "content": [
-            {"type": "text", "text": (
+            {"type": "text", "text": prompt},
-                "Recognise the page layout and transcribe visible text verbatim. "
-                "Return one region per headline, paragraph, image, chart, table, "
-                "code box, caption, header, footer or page number. Use the format "
-                "label [x0, y0, x1, y1]transcription with pixel coordinates in the "
-                "supplied image, one region starting on each new line. Labels: "
-                "title, paragraph, image, chart, table, code, caption, header, "
-                "footer, page_number, aside_text. Enclose a whole chart or table "
-                "in one box, not separate axis labels or cells. Preserve table "
-                "rows and columns as Markdown and code indentation and line breaks. "
-                "Images may have empty transcription; do not invent descriptions. "
-                "Do not merge neighbouring articles or include commentary."
-            )},
             {"type": "image_url", "image_url": {
                 "url": f"data:image/png;base64,{image_b64}",
             }},
@@ -934,6 +993,18 @@ def vision_ocr_page(png_path: Path, base_url: str, model: str,
         "max_tokens": 4000,
         "temperature": 0.0,
     }
+    # Unlimited-OCR's official vLLM recipe requires its per-request
+    # NGramPerReqLogitsProcessor settings. The container already exposes the
+    # processor, but without these fields it does nothing and the model can
+    # run into a repeated chart/formula loop. Keep the vendor-specific fields
+    # off generic OpenAI-compatible vision engines.
+    if unlimited_ocr:
+        payload.update({
+            "skip_special_tokens": False,
+            "ngram_size": 35,
+            "window_size": 128,
+            "images_config": {"image_mode": "gundam"},
+        })
     try:
         resp = request_with_retries(
             "POST", f"{base_url.rstrip('/')}/chat/completions",
@@ -952,7 +1023,21 @@ def vision_ocr_page(png_path: Path, base_url: str, model: str,
     if not isinstance(content, str):
         return None
 
-    regions = parse_vision_ocr_regions(content)
+    regions = parse_unlimited_ocr_regions(content) if unlimited_ocr else parse_vision_ocr_regions(content)
+    if regions and unlimited_ocr:
+        # Native markers use the model input's 0–999-ish coordinate space;
+        # blocks downstream expect coordinates of the rendered PNG.
+        try:
+            from PIL import Image
+            with Image.open(png_path) as im:
+                width, height = im.size
+            for region in regions:
+                if region.pop("native_normalized_bbox", False):
+                    x, y, w, h = region["bbox"]
+                    region["bbox"] = [x / 1000 * width, y / 1000 * height,
+                                      w / 1000 * width, h / 1000 * height]
+        except Exception:
+            return None
     return regions or _whole_page_region(content, png_path)
 
 

static/css/audiobook.css

@@ -1409,7 +1409,11 @@
 .cs-progress-output {
   display: flex;
   flex-direction: column;
-  flex: 1 1 auto;
+  /* Keep the live-output sheet immediately above the progress footer. Its
+     top grip then behaves like a bottom-anchored drawer: changing height
+     moves the top edge only, never creates/removes a gap below the panel. */
+  flex: 0 0 auto;
+  margin-top: auto;
   gap: 8px;
   min-height: 120px;
   max-height: 42vh;
@@ -1552,10 +1556,8 @@
      .cs-progress-layout), flex:1 here forced THIS panel to stretch to
      match, leaving a large empty gap below a short/not-yet-filled sheet
      (confirmed live with a short card next to a 72-character sidebar).
-     Shrink-to-content instead; .cs-progress-output below absorbs any
+     Shrink-to-content instead; the bottom-anchored .cs-progress-output
-     leftover column height since it's the piece meant to grow (it already
+     keeps its own scrollable, user-resizable height below it. */
-     scrolls its own passage/live-output text, unlike this preview which
-     shows one bounded character sheet). */
   margin: 10px 0 0;
   padding: 0;
   min-height: 220px;

static/js/character-sheets.js

@@ -761,8 +761,6 @@ async function csGenerate(text, cacheKey, initialRoster, opts = {}) {
     const seed = csSeedSheet(seedRaw);
     const name = String(seed.name || '').trim();
     if (!name) return;
-    const lc = lineCounts.get(name.toLowerCase());
-    if (lc != null) seed.line_count = lc;
     map.set(name.toLowerCase(), seed);
     establishedKeys.add(name.toLowerCase());
     const created = seedRaw?.created ? new Date(seedRaw.created).getTime() : NaN;
@@ -777,11 +775,13 @@ async function csGenerate(text, cacheKey, initialRoster, opts = {}) {
     const key = name.toLowerCase();
     if (!map.has(key)) {
       const blank = csBlankSheet(name);
-      const lc = lineCounts.get(key);
-      if (lc != null) blank.line_count = lc;
       map.set(key, blank);
     }
   });
+  // Saved sheets can already have aliases (for example, "Schwester Larissa")
+  // while the dialogue cast keeps the shorter canonical name ("Larissa"),
+  // or vice versa.  Apply the identity-aware tally after all seeds exist.
+  csAttachLineCounts([...map.values()], lineCounts);
   try {
     for (let i = 0; i < chunks.length; i++) {
       if (_cs.cancel) break;
@@ -876,6 +876,10 @@ async function csGenerate(text, cacheKey, initialRoster, opts = {}) {
             });
           });
           const changed = csMerge(map, incomingSheets, { strictRoster: targetMode });
+          // A response can reveal an alias only in this passage. Recalculate
+          // immediately so the live header/sidebar does not keep showing the
+          // old exact-name-only count until the full run has finished.
+          csAttachLineCounts([...map.values()], lineCounts);
           if (changed.length) prog.focus(changed[0].name);
           if (!targetMode) {
             (data.characters || []).forEach(n => { if (!roster.some(r => r.toLowerCase() === String(n || '').toLowerCase())) roster.push(n); });
@@ -1769,16 +1773,12 @@ function csOverviewCardHtml(rec) {
   </div>`;
 }
 
-// Field/section helpers matching the richer 2-column "lcd-*" layout (same
+// Field/section helpers for the richer character profile layout. The profile
-// classes the audiobook casting Profil panel and the full Library character
+// itself uses stacked field headings and prose; the shared casting/editor
-// editor use), instead of csCardHtml's old flat <dl> of rows.
+// components retain their denser layouts.
 function csLcdField(label, value, sheet, field) {
   if (!value) return '';
   const badge = sheet && field ? csSourceBadgeHtml(sheet, field) : '';
-  // A compact list row (label left, value right, thin separator) instead of
-  // the stacked label-above-value block — reads as a scannable list, closer
-  // to the old flat field list, while still living inside the grouped
-  // 2-column sections.
   if (!label) return `<div class="lcd-row lcd-row-full"><dd>${escHtml(String(value))}${badge ? ` ${badge}` : ''}</dd></div>`;
   return `<div class="lcd-row"><dt>${escHtml(label)}</dt><dd>${escHtml(String(value))}${badge ? ` ${badge}` : ''}</dd></div>`;
 }
@@ -1829,7 +1829,7 @@ function csCardHtml(s, meta = {}) {
   const voiceId = meta.voice || s.voice || '';
   return `<div class="cs-card cs-${s.tier === 'main' ? 'main' : 'supp'}" data-name="${escHtml(s.name)}">
     ${csProfileHeaderHtml(s, meta, csDetailActionsHtml(s))}
-    <div class="lcd-body ab-cd-body">
+    <div class="lcd-body ab-cd-body cs-profile-layout">
       <div class="lcd-voice-top">
         <div class="lcd-section-label"><span class="mdi mdi-account-voice"></span> Stimme</div>
         <span class="lcd-voice-label">${voiceId ? escHtml(voiceId) : '<span style="opacity:.5">Noch keine Stimme</span>'}</span>
@@ -2417,12 +2417,32 @@ function csGoToLibrary() {
 // Best-effort dialogue-line tally so the Library's table view can show a
 // "lines" column — only meaningful right after a cast/rehearsal run is in
 // memory, since line attribution itself isn't part of character-sheet
-// generation. Matches case-insensitively since sheet names and roster/script
+// generation. A dialogue caster may use an explicit alias ("Schwester
-// speaker names aren't guaranteed identical casing.
+// Larissa") while the profile is headed by the canonical name ("Larissa").
+// Count every distinct identity token recorded on the sheet, but deliberately
+// do not infer from roles/titles: two different people can share those.
+function csLineCountForSheet(sheet, counts) {
+  if (!counts || !counts.size) return null;
+  let total = 0;
+  let matched = false;
+  const seen = new Set();
+  csNameTokens(sheet).forEach(function (token) {
+    const key = String(token || '').trim().toLowerCase();
+    if (!key || seen.has(key)) return;
+    seen.add(key);
+    const count = Number(counts.get(key));
+    if (Number.isFinite(count)) {
+      total += count;
+      matched = true;
+    }
+  });
+  return matched ? total : null;
+}
+
 function csAttachLineCounts(sheets, counts) {
   if (!counts || !counts.size) return;
   sheets.forEach(function (s) {
-    const n = counts.get(String(s.name || '').trim().toLowerCase());
+    const n = csLineCountForSheet(s, counts);
     if (n != null) s.line_count = n;
   });
 }

static/js/magazine.js

@@ -78,6 +78,46 @@ function fmtPages(pages) {
   return 'pp. ' + runs.join(', ');
 }
 
+// The live OCR view is intentionally split: a portrait source page needs more
+// horizontal room than a dense recognised-text pane on some screens, while on
+// others the text is the thing being inspected. Keep a per-browser choice so
+// the user does not have to re-adjust it for every magazine/page.
+function setupMagIngestPreviewResize() {
+  const preview = $('mag-ingest-preview');
+  const grip = $('mag-ingest-preview-resize');
+  if (!preview || !grip || preview.dataset.resizeWired) return;
+  preview.dataset.resizeWired = '1';
+  const storageKey = 'ttsvc_mag_ingest_page_pane_pct';
+  const apply = (value) => {
+    const pct = Math.max(30, Math.min(70, Number(value) || 50));
+    preview.style.gridTemplateColumns = `${pct}% 8px calc(${100 - pct}% - 8px)`;
+    return pct;
+  };
+  try {
+    const saved = localStorage.getItem(storageKey);
+    if (saved != null) apply(saved);
+  } catch (_) {}
+  grip.addEventListener('pointerdown', (event) => {
+    if (window.matchMedia('(max-width: 860px)').matches) return;
+    event.preventDefault();
+    preview.classList.add('is-resizing');
+    const move = (e) => {
+      const rect = preview.getBoundingClientRect();
+      apply(((e.clientX - rect.left) / rect.width) * 100);
+    };
+    const stop = (e) => {
+      window.removeEventListener('pointermove', move);
+      window.removeEventListener('pointerup', stop);
+      preview.classList.remove('is-resizing');
+      const rect = preview.getBoundingClientRect();
+      const pct = apply(((e.clientX - rect.left) / rect.width) * 100);
+      try { localStorage.setItem(storageKey, String(pct)); } catch (_) {}
+    };
+    window.addEventListener('pointermove', move);
+    window.addEventListener('pointerup', stop, { once: true });
+  });
+}
+
 // ── Library ──────────────────────────────────────────────────────────────────
 
 async function magLoadLibrary() {
@@ -1469,6 +1509,7 @@ async function magInit() {
   magLoadLibrary();
   magLoadVoices();
   setupMagDropzone();
+  setupMagIngestPreviewResize();
   let lastId = null;
   try { lastId = localStorage.getItem(MAG_LAST_DOC_KEY); } catch (_) {}
   if (lastId) {

static/sections/s-magazine.html

@@ -63,6 +63,7 @@
             <span class="mag-ingest-preview-label">Page</span>
             <img id="mag-ingest-preview-img" alt="Page currently being read">
           </div>
+          <div class="mag-ingest-preview-resize" id="mag-ingest-preview-resize" role="separator" aria-orientation="vertical" aria-label="Resize page and recognised text panes" title="Drag to resize page and recognised text panes"></div>
           <div class="mag-ingest-preview-side">
             <span class="mag-ingest-preview-label">Recognised text</span>
             <div id="mag-ingest-preview-text" class="mag-ingest-preview-text"></div>

static/style.css

@@ -1237,6 +1237,25 @@ tr.lib-char-card.lib-chars-tbl-row:hover { transform: none; box-shadow: none; ba
 }
 .lcd-row dd { margin: 0; color: var(--text); line-height: 1.5; }
 .lcd-row dd .cs-source-mark { margin-left: 6px; vertical-align: middle; }
+/* Character sheets are read as a profile, not a compact comparison table:
+   each field has a bold heading followed by normal prose in one column.
+   Scope this to the sheet so the denser casting/library editor remains intact. */
+.cs-profile-layout .lcd-sections { grid-template-columns: 1fr; }
+.cs-profile-layout .lcd-section:nth-child(odd) { border-right: none; }
+.cs-profile-layout .lcd-section:nth-child(odd) { background: var(--surface); }
+.cs-profile-layout .lcd-section:nth-child(even) { background: var(--panel); }
+.cs-profile-layout .lcd-row {
+  display: block;
+  padding: 10px 0;
+}
+.cs-profile-layout .lcd-row dt {
+  color: var(--text);
+  font-size: 12px;
+  font-weight: 800;
+  letter-spacing: .02em;
+  text-transform: none;
+}
+.cs-profile-layout .lcd-row dd { margin-top: 4px; font-size: 14px; line-height: 1.55; }
 .lcd-field-label {
   font-size:11px; font-weight:700; color:var(--subtext); text-transform:uppercase;
   letter-spacing:.5px; margin-bottom:5px;
@@ -4797,15 +4816,22 @@ input[list="lang-codes"] {
    page on one side, recognised text filled in on the other as each page
    finishes. Dark, console-like treatment on purpose: distinct from the rest
    of the page so it clearly reads as a live process, not settled content. */
-.mag-ingest-preview { display: grid; grid-template-columns: 1fr 1fr; gap: 1px;
+.mag-ingest-preview { display: grid; grid-template-columns: minmax(280px, 1fr) 8px minmax(300px, 1fr); gap: 0;
-  background: var(--border); border-radius: var(--radius); overflow: hidden; margin-bottom: 14px; }
+  background: var(--border); border-radius: var(--radius); overflow: hidden; margin-bottom: 14px; min-height: min(56vh, 540px); }
-.mag-ingest-preview-side { background: #14161a; padding: 10px; display: flex; flex-direction: column; gap: 8px; min-height: 220px; }
+.mag-ingest-preview-side { background: #14161a; padding: 10px; display: flex; flex-direction: column; gap: 8px; min-height: 0; }
 .mag-ingest-preview-label { font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: #8a8f98; }
-.mag-ingest-preview-side img { max-width: 100%; max-height: 340px; object-fit: contain; margin: 0 auto; border-radius: 4px; }
+.mag-ingest-preview-side img { width: 100%; min-width: 0; flex: 1 1 auto; min-height: 0; object-fit: contain; margin: 0 auto; border-radius: 4px; }
 .mag-ingest-preview-text { color: #d7dae0; font-size: 13px; line-height: 1.6; white-space: pre-wrap;
-  overflow-y: auto; max-height: 340px; font-family: ui-monospace, 'SF Mono', Consolas, monospace; }
+  overflow-y: auto; min-height: 0; flex: 1 1 auto; font-family: ui-monospace, 'SF Mono', Consolas, monospace; }
+.mag-ingest-preview-resize { background: var(--border); cursor: col-resize; position: relative; touch-action: none; }
+.mag-ingest-preview-resize::after { content: ''; position: absolute; inset: 0 2px; background: transparent; }
+.mag-ingest-preview.is-resizing { user-select: none; cursor: col-resize; }
+.mag-ingest-preview.is-resizing .mag-ingest-preview-resize,
+.mag-ingest-preview-resize:hover { background: var(--accent); }
 @media (max-width: 860px) {
-  .mag-ingest-preview { grid-template-columns: 1fr; }
+  .mag-ingest-preview { grid-template-columns: 1fr; min-height: 0; }
+  .mag-ingest-preview-side { min-height: 300px; }
+  .mag-ingest-preview-resize { display: none; }
 }
 
 .mag-pill { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px;

tests/test_magazine.py

@@ -54,6 +54,7 @@ from core.magazine import (
     mark_sidebars,
     ocr_quality_score,
     parse_contents,
+    parse_unlimited_ocr_regions,
     parse_vision_ocr_regions,
     score_contents_page,
     vision_ocr_page,
@@ -819,6 +820,55 @@ class VisionOcrPageCallTests(unittest.TestCase):
         self.assertIsNotNone(out)
         self.assertEqual(out[0]["label"], "text")
 
+    def test_unlimited_ocr_request_enables_its_required_repeat_guard(self):
+        body = {"choices": [{"message": {"content":
+            "<|det|>chart [10,10,110,60]<|/det|>"}}]}
+        with mock.patch("core.magazine.request_with_retries",
+                        return_value=self._resp(json_body=body)) as request, \
+             mock.patch("PIL.Image.open") as mopen:
+            mopen.return_value.__enter__.return_value.size = (1000, 1400)
+            self.assertIsNotNone(vision_ocr_page(pathlib.Path(__file__), "http://engine/v1", "baidu/Unlimited-OCR"))
+        payload = request.call_args.kwargs["json"]
+        self.assertFalse(payload["skip_special_tokens"])
+        self.assertEqual(payload["ngram_size"], 35)
+        self.assertEqual(payload["window_size"], 128)
+        self.assertEqual(payload["images_config"], {"image_mode": "gundam"})
+        self.assertEqual(payload["messages"][0]["content"][0]["text"], "document parsing.")
+
+    def test_other_vision_engines_do_not_receive_unlimited_ocr_options(self):
+        body = {"choices": [{"message": {"content":
+            "text [10,10,110,60]Hello there, this is a real sentence."}}]}
+        with mock.patch("core.magazine.request_with_retries",
+                        return_value=self._resp(json_body=body)) as request:
+            self.assertIsNotNone(vision_ocr_page(pathlib.Path(__file__), "http://engine/v1", "other-vision"))
+        payload = request.call_args.kwargs["json"]
+        self.assertNotIn("ngram_size", payload)
+        self.assertNotIn("window_size", payload)
+
+
+class UnlimitedOcrRegionTests(unittest.TestCase):
+    # The URL/error-path tests below remain deliberately adjacent to the
+    # native-marker tests; share the same mocked OpenAI response helper.
+    def _resp(self, status=200, json_body=None):
+        import requests
+        resp = mock.Mock(status_code=status)
+        resp.raise_for_status = mock.Mock(
+            side_effect=None if status < 400 else requests.exceptions.HTTPError(f"HTTP {status}"))
+        resp.json = mock.Mock(return_value=json_body or {})
+        return resp
+
+    def test_native_detection_markers_preserve_visuals_and_page_furniture(self):
+        raw = "\n".join([
+            "<|det|>text [10,20,900,180]<|/det|>Article body.",
+            "<|det|>chart [100,210,900,650]<|/det|>",
+            "<|det|>footer [10,930,700,960]<|/det|>Sources: OECD.",
+            "<|det|>page_number [940,930,980,960]<|/det|>18",
+        ])
+        regions = parse_unlimited_ocr_regions(raw)
+        self.assertEqual([r["label"] for r in regions], ["text", "chart", "footer", "page_number"])
+        self.assertEqual(regions[1]["text"], "")
+        self.assertTrue(all(r["native_normalized_bbox"] for r in regions))
+
     def test_bare_server_url_gets_v1_and_explicit_paths_are_preserved(self):
         body = {"choices": [{"message": {"content":
             "text [10,10,110,60]Hello there, this is a real sentence."}}]}
@@ -1094,6 +1144,14 @@ class WholePageVisionFallbackTests(unittest.TestCase):
             mopen.return_value.__enter__.return_value.size = (897, 1049)
             self.assertIsNone(_whole_page_region(poisoned, pathlib.Path("/fake.png")))
 
+    def test_repeated_fabricated_latex_loop_is_rejected(self):
+        """Keep a vision model's repeated formula loop out of OCR text."""
+        from core.magazine import _whole_page_region
+        poisoned = "Studien widerlegen. " + (r"\( \therefore m = \frac{3}{11} \) " * 6)
+        with mock.patch("PIL.Image.open") as mopen:
+            mopen.return_value.__enter__.return_value.size = (897, 1049)
+            self.assertIsNone(_whole_page_region(poisoned, pathlib.Path("/fake.png")))
+
     def test_too_short_text_is_rejected(self):
         from core.magazine import _whole_page_region
         self.assertIsNone(_whole_page_region("Hi.", pathlib.Path("/fake.png")))