UI: fix outputs + preview image; emoji before CAMEL-ai; shrink logs; hide debug controls; add header logos and use template/logos with real images; tolerant XeLaTeX compile + image preview

.gitignore

@@ -1,10 +1,8 @@
 input/
 output/
 runs
-Paper2Poster/assets/
 Paper2Video/assets/
 posterbuilder/latex_proj/figures/
-*.png
 *.pdf
 *.jpg
 *.wav

app.py

@@ -73,55 +73,73 @@ def _write_logs(log_path: Path, logs):
         pass
 
 def _find_ui_header_logos(root: Path):
-    """Find up to three logos for UI header in order: camel, tvg, waterloo.
-    Search common assets folders and return absolute paths.
+    """Return list of Paths for UI header logos in order camel → tvg → waterloo.
+    Prefer template/logos; fallback to assets folders; if none match, return up to 3 images.
     """
-    cand_dirs = [
-        root / "assets",
-        root / "assets" / "logos",
-        root / "template" / "logos",
-        root / "Paper2Poster" / "assets",
-        root / "Paper2Poster" / "assets" / "logos",
-        root / "paper2poster" / "assets",
-        root / "paper2poster" / "assets" / "logos",
-    ]
-    imgs = []
-    for d in cand_dirs:
-        try:
-            if d.exists():
-                for p in d.iterdir():
-                    if p.is_file() and p.suffix.lower() in {".png", ".jpg", ".jpeg", ".webp"}:
-                        imgs.append(p)
-        except Exception:
-            continue
-    def pick(sub):
-        for p in imgs:
-            if sub in p.name.lower():
-                return p
-        return None
-    order = []
-    for key in ("camel", "tvg", "waterloo"):
-        p = pick(key)
-        if p and p not in order:
-            order.append(p)
-    # Fallback: if none matched, take up to 3 images in stable order
-    if not order and imgs:
-        order = imgs[:3]
-    return order
+    preferred = root / "template" / "logos"
+    names = ["camel", "tvg", "waterloo"]
+    found = []
+    # Try preferred dir first with explicit names
+    try:
+        if preferred.exists():
+            allp = list(preferred.iterdir())
+            for key in names:
+                for p in allp:
+                    if p.is_file() and p.suffix.lower() in {".png", ".jpg", ".jpeg", ".webp"} and key in p.name.lower():
+                        found.append(p)
+                        break
+    except Exception:
+        pass
+    # If not all found, search broader locations
+    if len(found) < 3:
+        cand_dirs = [
+            root / "assets",
+            root / "assets" / "logos",
+            root / "Paper2Poster" / "assets",
+            root / "Paper2Poster" / "assets" / "logos",
+            root / "paper2poster" / "assets",
+            root / "paper2poster" / "assets" / "logos",
+        ]
+        imgs = []
+        for d in cand_dirs:
+            try:
+                if d.exists():
+                    for p in d.iterdir():
+                        if p.is_file() and p.suffix.lower() in {".png", ".jpg", ".jpeg", ".webp"}:
+                            imgs.append(p)
+            except Exception:
+                continue
+        for key in names:
+            if any(key in str(fp).lower() for fp in found):
+                continue
+            for p in imgs:
+                if key in p.name.lower():
+                    found.append(p)
+                    break
+        # Fallback: fill up to 3
+        if not found and imgs:
+            found = imgs[:3]
+    return found
 
 def _ui_header_logos_html():
-    from urllib.parse import quote
+    """Return an HTML div with base64-embedded logos to avoid broken /file routes."""
+    import base64
     logos = _find_ui_header_logos(ROOT)
     if not logos:
         return ""
-    imgs = []
+    parts = []
     for p in logos:
-        src = f"/file={quote(str(p))}"
-        imgs.append(f"<img src='{src}' style='height:56px;width:auto;object-fit:contain'>")
-    return (
-        "<div style='display:flex;justify-content:flex-end;gap:12px;align-items:center;margin:8px 0'>"
-        + "".join(imgs) + "</div>"
-    )
+        try:
+            b = p.read_bytes()
+            b64 = base64.b64encode(b).decode("utf-8")
+            mime = "image/png" if p.suffix.lower() == ".png" else "image/jpeg"
+            src = f"data:{mime};base64,{b64}"
+            parts.append(f"<img src='{src}' style='height:56px;width:auto;object-fit:contain'>")
+        except Exception:
+            continue
+    if not parts:
+        return ""
+    return "<div style='display:flex;justify-content:flex-end;gap:12px;align-items:center;margin:8px 0'>" + "".join(parts) + "</div>"
 
 ## Removed sanitizer per request: do not mutate user-generated TeX