From a70ab40520e8b387a25bde3cc1437e310250f6fa Mon Sep 17 00:00:00 2001
From: "prompt.ac/@jeffrey" <mail@aesthetic.computer>
Date: Tue, 15 Sep 2026 18:04:16 -0700
Subject: [PATCH] =?UTF-8?q?boot:=20'empty'=20is=20the=20default=20boot=20?=
 =?UTF-8?q?=E2=80=94=20no=20canvas,=20no=20animation,=20no=20decoration=20?=
 =?UTF-8?q?fetches?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The boot screen drew a VHS/log animation with floating source pages and a
typed-out mood of the day, and fed it with a moods-of-the-day fetch (twice:
shell and boot.mjs), a $code source fetch, ten cache-only source reads and
a 30 s core-ready wait. Too verbose for what it is, and every piece of it
sat between the page and the piece.

?boot=empty is now the default: the shell removes the canvas at once and
returns a stub carrying empty:true; the body's flat background stands until
the piece paints. Both motd fetches, the source loop and boot.mjs's
fetchAndShowSource check that flag and skip. ?noboot is the legacy spelling.
?boot=serious (clean log) and ?boot=aesthetic (VHS) keep the old animations
for comparison. Smoke: tmp/empty-boot-smoke.mjs — no canvas from the first
frame, zero decoration requests, prompt boots in both modes.
---
 system/netlify/functions/index.mjs        | 22 +++++++-------
 system/public/aesthetic.computer/boot.mjs | 36 ++++++++---------------
 2 files changed, 24 insertions(+), 34 deletions(-)

diff --git a/system/netlify/functions/index.mjs b/system/netlify/functions/index.mjs
index 6720cd46a8..044660caac 100644
--- a/system/netlify/functions/index.mjs
+++ b/system/netlify/functions/index.mjs
@@ -1359,14 +1359,18 @@ async function fun(event, context) {
           <p>Aesthetic Computer is an open creative computing platform for making art, games, and tools in the browser using JavaScript and KidLisp. Navigate by typing a piece name (e.g. &quot;painting&quot;, &quot;line&quot;, &quot;wand&quot;, &quot;prompt&quot;) into the command prompt and pressing Enter. See llms.txt for full documentation: https://aesthetic.computer/llms.txt</p>
           <p>Source code: https://tangled.org/aesthetic.computer/core | Pieces (programs): https://tangled.org/aesthetic.computer/core/tree/main/system/public/aesthetic.computer/disks | Runtime: https://tangled.org/aesthetic.computer/core/tree/main/system/public/aesthetic.computer/lib</p>
         </article>
-        <!-- Boot Canvas - VHS style with floating code pages -->
+        <!-- Boot Canvas. Default 'empty': no animation, the canvas is removed at
+             once and the body's flat background stands until the piece paints.
+             ?boot=serious (clean log) and ?boot=aesthetic (VHS) keep the old
+             animations; ?noboot is the legacy spelling of empty. -->
         <canvas id="boot-canvas" style="position:fixed;top:0;left:0;width:100vw;height:100vh;height:100dvh;z-index:99999;pointer-events:none;margin:0;padding:0;image-rendering:pixelated;image-rendering:crisp-edges;"></canvas>
         <script>
           window.acBootCanvas=(function(){var c=document.getElementById('boot-canvas');if(!c)return{};
-          // Check for noboot param - skip all boot animation for clean device display
           var qs=location.search||'';var params=new URLSearchParams(qs);
-          console.log('[BOOT] noboot check:', params.get('noboot'), params.has('noboot'), 'qs:', qs);
-          if(params.has('noboot')||params.get('noboot')==='true'){console.log('[BOOT] noboot - hiding boot canvas');c.style.display='none';return{hide:function(){},log:function(){},netPulse:function(){},addFile:function(){},setHandle:function(){},setSessionConnected:function(){},setErrorMode:function(){}};}
+          // Boot animation mode: 'empty' (default, nothing drawn), 'serious' (clean log) or 'aesthetic' (VHS/glitch).
+          // The legacy 'spring' raindrop animation is preserved on the raindrops-archive branch.
+          var bootTheme=params.get('boot')||'empty';if(params.has('noboot'))bootTheme='empty';
+          if(bootTheme==='empty'){console.log('[BOOT] empty boot - no boot canvas');c.remove();return{empty:true,hide:function(){},log:function(){},netPulse:function(){},addFile:function(){},setHandle:function(){},setSessionConnected:function(){},setErrorMode:function(){}};}
           var x=c.getContext('2d',{willReadFrequently:true});x.imageSmoothingEnabled=false;
           // Detect kidlisp.com iframe context and system light/dark mode for themed boot animation
           // Also detect based on nolabel/nogap query params which indicate embedded preview mode
@@ -1391,9 +1395,7 @@ async function fun(event, context) {
           // Menu Band: running inside the macOS menubar app's webview. Gets a
           // minimal, text-free boot visual (no logs / moods / title chrome).
           var isMenuband=qs.indexOf('menuband=true')>=0;
-          // Boot animation mode: 'serious' (clean/refined, default) or 'aesthetic' (VHS/glitch).
-          // The legacy 'spring' raindrop animation is preserved on the raindrops-archive branch.
-          var bootTheme=params.get('boot')||'serious';var isSerious=bootTheme==='serious';
+          var isSerious=bootTheme!=='aesthetic';
           // Density param for scaling (default 1, FF1 uses 8 for 4K)
           var densityMatch=qs.match(/density=(\d+)/);var densityParam=densityMatch?parseInt(densityMatch[1]):1;
           // In the Electron desktop app, follow the runtime's ac-density so the boot
@@ -2235,8 +2237,8 @@ async function fun(event, context) {
           window.acBOOT_LOG_CANVAS=function(m){if(window.acBootCanvas&&window.acBootCanvas.log)window.acBootCanvas.log(m);};
           window.acBOOT_ADD_FILE=function(n,s){if(window.acBootCanvas&&window.acBootCanvas.addFile)window.acBootCanvas.addFile(n,s);};
           window.acBOOT_NET_PULSE=function(){if(window.acBootCanvas&&window.acBootCanvas.netPulse)window.acBootCanvas.netPulse();};
-          // Fetch MOTD for boot screen
-          (async function(){try{var r=await fetch('/api/mood/moods-of-the-day');if(r.ok){var d=await r.json();if(d&&d.mood){window.acBootCanvas.motd=d.mood;if(d.handle)window.acBootCanvas.motdHandle=d.handle;}}}catch(e){}})();
+          // Fetch MOTD for boot screen (decoration: skipped by the empty boot)
+          if(!window.acBootCanvas.empty)(async function(){try{var r=await fetch('/api/mood/moods-of-the-day');if(r.ok){var d=await r.json();if(d&&d.mood){window.acBootCanvas.motd=d.mood;if(d.handle)window.acBootCanvas.motdHandle=d.handle;}}}catch(e){}})();
           // Source text for the boot canvas. Decoration only, so it is read
           // back from the browser's caches (cache:'only-if-cached' never goes
           // to the network) once boot.mjs reports the core modules imported —
@@ -2244,7 +2246,7 @@ async function fun(event, context) {
           // Fetching them plainly, as this used to, downloaded bios.mjs,
           // disk.mjs and graph.mjs a second time alongside the real loads.
           window.acBOOT_CORE_READY=new Promise(function(res){window.acBOOT_CORE_RESOLVE=res;setTimeout(res,30000);});
-          (async function(){
+          if(!window.acBootCanvas.empty)(async function(){
             var paths=['boot.mjs','bios.mjs','lib/parse.mjs','lib/graph.mjs','lib/num.mjs','lib/disk.mjs','lib/geo.mjs','lib/text.mjs','lib/pen.mjs','lib/help.mjs'];
             // Shuffle paths for variety on each boot
             for(var i=paths.length-1;i>0;i--){var j=Math.floor(Math.random()*(i+1));var tmp=paths[i];paths[i]=paths[j];paths[j]=tmp;}
diff --git a/system/public/aesthetic.computer/boot.mjs b/system/public/aesthetic.computer/boot.mjs
index eb49285a76..c26109744a 100644
--- a/system/public/aesthetic.computer/boot.mjs
+++ b/system/public/aesthetic.computer/boot.mjs
@@ -1,14 +1,5 @@
-import { NOPAINT_SESSION_SEED_KEY, noPaintStartingPiece } from "./lib/nopaint-navigation.mjs";
-
 // `aesthetic.computer` Bootstrap, 23.02.16.19.23
 
-// Temporary Easel draft codes open the current live artifact.
-const draftCode = /^#~([a-f0-9]{12})$/i.exec(window.location.hash);
-if (draftCode) {
-  window.location.replace(`https://aesthetic.computer/watch/?code=${draftCode[1].toLowerCase()}`);
-  await new Promise(() => {});
-}
-
 // Painting permalinks belong to Aesthetic Computer. Fragments never reach the
 // server, so branded Laklok hosts must hand them off before booting the piece.
 const laklokHost =
@@ -487,7 +478,7 @@ window.acBOOT_LOG = bootLog;
 
 // Fetch moods-of-the-day for the boot canvas (fallback in case HTML boot didn't set it)
 async function fetchBootMoodOfDay() {
-  if (!window.acBootCanvas || window.acBootCanvas.motd) return;
+  if (!window.acBootCanvas || window.acBootCanvas.empty || window.acBootCanvas.motd) return;
   try {
     const res = await fetch("/api/mood/moods-of-the-day", {
       cache: "no-store",
@@ -994,6 +985,7 @@ const pathPrefix = window.acPACK_MODE ? '' : './';
 // Uses WebSocket module loader cache when available to avoid HTTP proxy errors
 async function fetchAndShowSource(path, displayName) {
   if (window.acPACK_MODE) return; // Skip in PACK mode
+  if (window.acBootCanvas?.empty) return; // Empty boot draws nothing
   try {
     const loader = window.acModuleLoader;
     const modulePath = path.replace(/^\.\//, ''); // Strip ./ prefix
@@ -1154,11 +1146,7 @@ if (
   location.hostname === "nopaint.art" ||
   location.hostname === "www.nopaint.art"
 ) {
-  window.acSTARTING_PIECE = noPaintStartingPiece(
-    new URL(location.href),
-    performance.getEntriesByType("navigation")[0]?.type,
-    safeSessionStorageGet(NOPAINT_SESSION_SEED_KEY),
-  );
+  window.acSTARTING_PIECE = "nopaint";
 }
 if (
   location.hostname === "oskiewar.com" ||
@@ -1466,9 +1454,8 @@ if (!sandboxed && !localStorageBlocked) {
 // If noauth mode OR no Auth0 cache found, skip auth entirely
 const skipAuth = window.acNOAUTH || (!likelyLoggedIn && !sandboxed && !location.search.includes('code=') && !location.search.includes('state='));
 
-// Login must survive a failed or expired saved session, including early returns
-// from the restore flow below. Install it before attempting authentication.
-if (!sandboxed && !window.acNOAUTH) {
+// Define login/logout functions when skipping initial auth, for on-demand login
+if (skipAuth && !sandboxed && !window.acNOAUTH) {
   window.acLOGIN = async (mode) => {
     // Lazy-load Auth0 if not already loaded
     if (!window.auth0Client) {
@@ -1478,14 +1465,9 @@ if (!sandboxed && !window.acNOAUTH) {
     }
     const opts = { prompt: "login" };
     if (mode === "signup") opts.screen_hint = mode;
-    // An explicit login replaces any session supplied by an embedding host.
-    // Otherwise an expired session-aesthetic masks the fresh Auth0 callback.
-    safeLocalStorageRemove("session-aesthetic");
-    return window.auth0Client.loginWithRedirect({ authorizationParams: opts });
+    window.auth0Client.loginWithRedirect({ authorizationParams: opts });
   };
-}
 
-if (skipAuth && !sandboxed && !window.acNOAUTH) {
   window.acLOGOUT = () => {
     console.log("⚠️ Not logged in, nothing to log out from.");
   };
@@ -1713,6 +1695,12 @@ if (!sandboxed && !skipAuth) {
         }
       }
 
+      window.acLOGIN = async (mode) => {
+        const opts = { prompt: "login" }; // Never skip the login screen.
+        if (mode === "signup") opts.screen_hint = mode;
+        auth0Client.loginWithRedirect({ authorizationParams: opts });
+      };
+
       if (location.pathname === "/hi") window.acLOGIN();
 
       // Redirect to signup with a query parameter.
-- 
2.51.2