screenshot service upgraded to REAL PNGs: chromium 150 installed on CT768 (RAM 1G->2G), PNG path live-verified (example.com 26KB, self-shot 535KB), honest-fallback note updated

app.py

@@ -933,7 +933,7 @@ GET  /api/shot/status/42
   -> {"ok":true,"status":"text_fallback","title":"...","text_preview":"...","headings":[...]}
 auth: session cookie or Authorization: Bearer dk_...
 25c/shot, free with PASS - rate limit 6/min
-NOTE: no headless browser on this host yet - expect text_fallback</pre></div>""").replace("BASE", SITE)
+PNG mode: status "done" + png_b64. If chromium vanishes, expect text_fallback.</pre></div>""").replace("BASE", SITE)
 
 SHOT_EXPLAINER = """<div class=card><b>HOW CAPTURE WORKS</b><br><span style="color:var(--dim);font-size:.85rem">
 &bull; With <span title="headless Chromium renders the page with JS + CSS and writes a real 1280x1600 PNG — nothing is faked">headless Chromium</span> installed, /shot returns a real browser render as base64 PNG.
@@ -944,7 +944,7 @@ SHOT_EXPLAINER = """<div class=card><b>HOW CAPTURE WORKS</b><br><span style="col
 @app.route("/shot")
 def shot_page():
     body = f"""
-<h1>SCREEN <span>SHOT</span></h1><p class=sub>Point at a URL, get a render. Real headless-Chromium PNG when the host has one — an honest rendered-text + intel fallback when it doesn't. Never a fake image.</p>
+<h1>SCREEN <span>SHOT</span></h1><p class=sub>Point at a URL, get a real 1280×1600 headless-Chromium PNG render (base64 in the API). Honest text+intel fallback only if the renderer is down. Never a fake image.</p>
 <div class=card><b>New capture</b>
 <form method=post action=/api/shot/create onsubmit="doShot();return false">
 <input id=shoturl name=url placeholder="https://target.example" style="width:min(560px,100%)" required>