From ee7ab4c4a98feffd673dec8a44f7a6714ae01a9b Mon Sep 17 00:00:00 2001
From: forhappy <haipingf@gmail.com>
Date: Mon, 17 Aug 2026 23:59:01 -0700
Subject: [PATCH] docs: sharpen history arrowhead

---
 diagram/prolly-s3-architecture.svg | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/diagram/prolly-s3-architecture.svg b/diagram/prolly-s3-architecture.svg
index d19987e..ec0dece 100644
--- a/diagram/prolly-s3-architecture.svg
+++ b/diagram/prolly-s3-architecture.svg
@@ -4,7 +4,8 @@
   <defs>
     <linearGradient id="bg" x1="0" y1="0" x2="1" y2="1"><stop stop-color="#08111f"/><stop offset="1" stop-color="#111b34"/></linearGradient>
     <marker id="arrow" markerWidth="9" markerHeight="7" refX="9" refY="3.5" orient="auto"><path d="M0 0 9 3.5 0 7Z" fill="#6ee7f9"/></marker>
-    <style>.h{font:700 22px ui-sans-serif,system-ui;fill:#f8fafc}.s{font:400 13px ui-sans-serif,system-ui;fill:#9fb0c8}.t{font:700 16px ui-sans-serif,system-ui;fill:#f8fafc}.b{font:400 13px ui-sans-serif,system-ui;fill:#c7d2e3}.k{font:600 12px ui-monospace,SFMono-Regular,monospace;fill:#7dd3fc}.box{fill:#12223b;stroke:#385173;stroke-width:1.5}.data{fill:#102f35;stroke:#2dd4bf;stroke-width:1.5}.meta{fill:#241d42;stroke:#a78bfa;stroke-width:1.5}.line{fill:none;stroke:#6ee7f9;stroke-width:2;marker-end:url(#arrow)}</style>
+    <marker id="history-arrow" markerWidth="10" markerHeight="10" refX="10" refY="5" orient="auto"><path d="M0 0 10 5 0 10Z" fill="#6ee7f9"/></marker>
+    <style>.h{font:700 22px ui-sans-serif,system-ui;fill:#f8fafc}.s{font:400 13px ui-sans-serif,system-ui;fill:#9fb0c8}.t{font:700 16px ui-sans-serif,system-ui;fill:#f8fafc}.b{font:400 13px ui-sans-serif,system-ui;fill:#c7d2e3}.k{font:600 12px ui-monospace,SFMono-Regular,monospace;fill:#7dd3fc}.box{fill:#12223b;stroke:#385173;stroke-width:1.5}.data{fill:#102f35;stroke:#2dd4bf;stroke-width:1.5}.meta{fill:#241d42;stroke:#a78bfa;stroke-width:1.5}.line{fill:none;stroke:#6ee7f9;stroke-width:2;marker-end:url(#arrow)}.history-line{marker-end:url(#history-arrow)}</style>
   </defs>
   <rect width="1120" height="650" rx="18" fill="url(#bg)"/>
   <text x="50" y="55" class="h">Prolly is the history; S3 holds whole immutable payloads</text>
@@ -36,7 +37,7 @@
   <text x="785" y="534" class="b">retention pins + exact-version GC</text>
   <path d="M260 235H350" class="line"/><text x="305" y="222" text-anchor="middle" class="s">calls</text>
   <path d="M650 185H755" class="line"/><text x="702" y="169" text-anchor="middle" class="s">whole bytes</text>
-  <path d="M650 290C705 290 720 430 755 440" class="line"/><text x="690" y="365" text-anchor="middle" class="s">history</text>
+  <path d="M650 290C705 290 720 430 755 440" class="line history-line"/><text x="690" y="365" text-anchor="middle" class="s">history</text>
   <rect x="50" y="430" width="600" height="140" rx="14" fill="#0c192c" stroke="#334a69"/>
   <text x="80" y="468" class="t">Canonical read</text>
   <text x="80" y="500" class="b">1. Pin a Prolly commit and resolve the logical key.</text>