Fix file uploader styling and show deploy timestamp

- Make the resume uploader visible: tag-agnostic dropzone selector (Streamlit now renders <section>), plus styled Browse button, instruction text, and icon (was black-on-black)
- Show latest code-update (deploy) date/time in IST on the setup header, from HEAD git commit time with a source-file mtime fallback

Co-authored-by: Cursor <cursoragent@cursor.com>

ui.py

@@ -108,16 +108,47 @@ p, span, label, .stMarkdown { color: #0F172A; }
 .stProgress > div > div { background: linear-gradient(90deg, #2563EB, #7C3AED) !important; }
 
 /* ── File uploader ── */
-div[data-testid="stFileUploaderDropzone"] {
+/* Tag-agnostic: recent Streamlit renders the dropzone as <section>, so the old
+   `div[...]` selector missed it and the default dark theme showed (black-on-black). */
+[data-testid="stFileUploaderDropzone"] {
     background: #FFFFFF !important;
     border: 2px dashed #CBD5E1 !important;
     border-radius: 12px !important;
     transition: all 0.2s ease;
 }
-div[data-testid="stFileUploaderDropzone"]:hover {
+[data-testid="stFileUploaderDropzone"]:hover {
     border-color: #2563EB !important;
     background: #F0F4FF !important;
 }
+/* Dropzone instruction text + icon (were dark-on-dark / invisible) */
+[data-testid="stFileUploaderDropzone"] *,
+[data-testid="stFileUploaderDropzoneInstructions"],
+[data-testid="stFileUploaderDropzoneInstructions"] * {
+    color: #334155 !important;
+}
+[data-testid="stFileUploaderDropzone"] svg,
+[data-testid="stFileUploaderDropzoneInstructions"] svg {
+    fill: #2563EB !important;
+    color: #2563EB !important;
+}
+/* "Browse files" button inside the dropzone (was black background on black) */
+[data-testid="stFileUploaderDropzone"] button {
+    background: #2563EB !important;
+    color: #FFFFFF !important;
+    border: 1px solid #2563EB !important;
+    border-radius: 8px !important;
+    font-weight: 600 !important;
+}
+[data-testid="stFileUploaderDropzone"] button:hover {
+    background: #1D4ED8 !important;
+    border-color: #1D4ED8 !important;
+    color: #FFFFFF !important;
+}
+/* Uploaded-file chip row */
+[data-testid="stFileUploaderFile"],
+[data-testid="stFileUploaderFile"] * {
+    color: #334155 !important;
+}
 
 /* ── Inputs ── */
 .stTextInput > div > div > input,
@@ -843,6 +874,42 @@ def _readiness_level(pct):
 # ══════════════════════════════════════════════════════════════════════════════
 # HEADER
 # ══════════════════════════════════════════════════════════════════════════════
+@st.cache_data(ttl=300, show_spinner=False)
+def _deploy_timestamp_ist() -> str:
+    """Latest code-update (deploy) time in IST.
+
+    Prefers the HEAD git commit time (matches what GitHub/HF deployed); falls
+    back to the newest mtime among ui.py + src/*.py if git isn't available.
+    """
+    from datetime import datetime, timezone, timedelta
+    ist = timezone(timedelta(hours=5, minutes=30))
+    here = os.path.dirname(os.path.abspath(__file__))
+    ts = None
+    try:
+        import subprocess
+        out = subprocess.run(
+            ["git", "log", "-1", "--format=%cI"],
+            capture_output=True, text=True, timeout=4, cwd=here,
+        )
+        s = (out.stdout or "").strip()
+        if s:
+            ts = datetime.fromisoformat(s)
+    except Exception:
+        ts = None
+    if ts is None:
+        try:
+            cands = [os.path.join(here, "ui.py")]
+            src_dir = os.path.join(here, "src")
+            if os.path.isdir(src_dir):
+                cands += [os.path.join(src_dir, f) for f in os.listdir(src_dir)
+                          if f.endswith(".py")]
+            mt = max(os.path.getmtime(p) for p in cands if os.path.exists(p))
+            ts = datetime.fromtimestamp(mt, tz=timezone.utc)
+        except Exception:
+            ts = datetime.now(timezone.utc)
+    return ts.astimezone(ist).strftime("%d %b %Y, %I:%M %p IST")
+
+
 has_resume = os.path.exists("data/resume/resume.pdf")
 sheets_ok, sheets_status = _sheets_configured()
 
@@ -857,6 +924,9 @@ with hdr_l:
 <div class="jaa-header" style="padding-bottom: 12px;">
   <div class="jaa-header-left"></div>
   <span class="jaa-header-badge">{"⏳" if st.session_state.running else "✨"} {status_text}</span>
+</div>
+<div style="font-size:0.78rem; color:#64748B; margin:-4px 0 4px; font-weight:500;">
+  🟢 Last code update (deployed): {_deploy_timestamp_ist()}
 </div>""")
 
 with hdr_r: