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Add json and csv artifact kinds with interactive viewers

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Gap 1 from planning/2026-09-02-artifact_kind_gaps_for_frequent_agent_output.md.
Chose new first-class kinds over riding on html_fragment, resolving that
doc's open design question in favor of filtering support, raw-source
preservation (like markdown's .md sidecar), and server-owned validation.

- json: validated with json.loads at post time (400 on invalid JSON),
  rendered with renderjson (collapsible tree), vendored locally.
- csv: parsed server-side with the stdlib csv module into columns/rows and
  handed to Grid.js as plain data - no client-side CSV-parsing plugin
  needed, keeping normalization server-owned. Vendored locally (MIT).
- Both preserve their original text as a sidecar file, generalizing what
  was previously markdown-only handling (storage.py's SIDECAR_SUFFIXES) so
  disk-size accounting, eviction cleanup, and ?raw=1 all cover json/csv too.
- Raw JSON is embedded in a <script type="application/json"> block with
  `</script` occurrences escaped (safe because JSON's \/ escape round-trips
  correctly) - verified with a live </script>-injection payload against the
  actual running server, not just unit tests.

New migration (0012) for the KIND_CHOICES change - SQLite doesn't enforce
choices at the schema level, but Django's migration state tracks it.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
This commit is contained in:
peter 2026-09-02 14:56:20 +01:00
parent af9ecf28a9
commit e5d2f192df
12 changed files with 476 additions and 18 deletions
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MIT License
Copyright (c) Afshin Mehrabani <afshin.meh@gmail.com>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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Vendored from https://cdn.jsdelivr.net/npm/gridjs@6.2.0 (MIT, see `LICENSE`).
Files: `gridjs.umd.js` (library), `mermaid.min.css` (bundled theme).

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Vendored from https://github.com/caldwell/renderjson (v1.4.0).
No standalone `LICENSE` file exists in the upstream repo; its `package.json`
declares `"license": "ISC"` (MIT-equivalent, permissive).

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// Copyright © 2013-2017 David Caldwell <david@porkrind.org>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
// Usage
// -----
// The module exports one entry point, the `renderjson()` function. It takes in
// the JSON you want to render as a single argument and returns an HTML
// element.
//
// Options
// -------
// renderjson.set_icons("+", "-")
// This Allows you to override the disclosure icons.
//
// renderjson.set_show_to_level(level)
// Pass the number of levels to expand when rendering. The default is 0, which
// starts with everything collapsed. As a special case, if level is the string
// "all" then it will start with everything expanded.
//
// renderjson.set_max_string_length(length)
// Strings will be truncated and made expandable if they are longer than
// `length`. As a special case, if `length` is the string "none" then
// there will be no truncation. The default is "none".
//
// renderjson.set_sort_objects(sort_bool)
// Sort objects by key (default: false)
//
// renderjson.set_replacer(replacer_function)
// Equivalent of JSON.stringify() `replacer` argument when it's a function
//
// renderjson.set_collapse_msg(collapse_function)
// Accepts a function (len:number):string => {} where len is the length of the
// object collapsed. Function should return the message displayed when a
// object is collapsed. The default message is "X items"
//
// renderjson.set_property_list(property_list)
// Equivalent of JSON.stringify() `replacer` argument when it's an array
//
// Theming
// -------
// The HTML output uses a number of classes so that you can theme it the way
// you'd like:
// .disclosure ("⊕", "⊖")
// .syntax (",", ":", "{", "}", "[", "]")
// .string (includes quotes)
// .number
// .boolean
// .key (object key)
// .keyword ("null", "undefined")
// .object.syntax ("{", "}")
// .array.syntax ("[", "]")
var module, window, define, renderjson=(function() {
var themetext = function(/* [class, text]+ */) {
var spans = [];
while (arguments.length)
spans.push(append(span(Array.prototype.shift.call(arguments)),
text(Array.prototype.shift.call(arguments))));
return spans;
};
var append = function(/* el, ... */) {
var el = Array.prototype.shift.call(arguments);
for (var a=0; a<arguments.length; a++)
if (arguments[a].constructor == Array)
append.apply(this, [el].concat(arguments[a]));
else
el.appendChild(arguments[a]);
return el;
};
var prepend = function(el, child) {
el.insertBefore(child, el.firstChild);
return el;
}
var isempty = function(obj, pl) { var keys = pl || Object.keys(obj);
for (var i in keys) if (Object.hasOwnProperty.call(obj, keys[i])) return false;
return true; }
var text = function(txt) { return document.createTextNode(txt) };
var div = function() { return document.createElement("div") };
var span = function(classname) { var s = document.createElement("span");
if (classname) s.className = classname;
return s; };
var A = function A(txt, classname, callback) { var a = document.createElement("a");
if (classname) a.className = classname;
a.appendChild(text(txt));
a.href = '#';
a.onclick = function(e) { callback(); if (e) e.stopPropagation(); return false; };
return a; };
function _renderjson(json, indent, dont_indent, show_level, options) {
var my_indent = dont_indent ? "" : indent;
var disclosure = function(open, placeholder, close, type, builder) {
var content;
var empty = span(type);
var show = function() { if (!content) append(empty.parentNode,
content = prepend(builder(),
A(options.hide, "disclosure",
function() { content.style.display="none";
empty.style.display="inline"; } )));
content.style.display="inline";
empty.style.display="none"; };
append(empty,
A(options.show, "disclosure", show),
themetext(type+ " syntax", open),
A(placeholder, null, show),
themetext(type+ " syntax", close));
var el = append(span(), text(my_indent.slice(0,-1)), empty);
if (show_level > 0 && type != "string")
show();
return el;
};
if (json === null) return themetext(null, my_indent, "keyword", "null");
if (json === void 0) return themetext(null, my_indent, "keyword", "undefined");
if (typeof(json) == "string" && json.length > options.max_string_length)
return disclosure('"', json.substr(0,options.max_string_length)+" ...", '"', "string", function () {
return append(span("string"), themetext(null, my_indent, "string", JSON.stringify(json)));
});
if (typeof(json) != "object" || [Number, String, Boolean, Date].indexOf(json.constructor) >= 0) // Strings, numbers and bools
return themetext(null, my_indent, typeof(json), JSON.stringify(json));
if (json.constructor == Array) {
if (json.length == 0) return themetext(null, my_indent, "array syntax", "[]");
return disclosure("[", options.collapse_msg(json.length), "]", "array", function () {
var as = append(span("array"), themetext("array syntax", "[", null, "\n"));
for (var i=0; i<json.length; i++)
append(as,
_renderjson(options.replacer.call(json, i, json[i]), indent+" ", false, show_level-1, options),
i != json.length-1 ? themetext("syntax", ",") : [],
text("\n"));
append(as, themetext(null, indent, "array syntax", "]"));
return as;
});
}
// object
if (isempty(json, options.property_list))
return themetext(null, my_indent, "object syntax", "{}");
return disclosure("{", options.collapse_msg(Object.keys(json).length), "}", "object", function () {
var os = append(span("object"), themetext("object syntax", "{", null, "\n"));
for (var k in json) var last = k;
var keys = options.property_list || Object.keys(json);
if (options.sort_objects)
keys = keys.sort();
for (var i in keys) {
var k = keys[i];
if (!(k in json)) continue;
append(os, themetext(null, indent+" ", "key", '"'+k+'"', "object syntax", ': '),
_renderjson(options.replacer.call(json, k, json[k]), indent+" ", true, show_level-1, options),
k != last ? themetext("syntax", ",") : [],
text("\n"));
}
append(os, themetext(null, indent, "object syntax", "}"));
return os;
});
}
var renderjson = function renderjson(json)
{
var options = new Object(renderjson.options);
options.replacer = typeof(options.replacer) == "function" ? options.replacer : function(k,v) { return v; };
var pre = append(document.createElement("pre"), _renderjson(json, "", false, options.show_to_level, options));
pre.className = "renderjson";
return pre;
}
renderjson.set_icons = function(show, hide) { renderjson.options.show = show;
renderjson.options.hide = hide;
return renderjson; };
renderjson.set_show_to_level = function(level) { renderjson.options.show_to_level = typeof level == "string" &&
level.toLowerCase() === "all" ? Number.MAX_VALUE
: level;
return renderjson; };
renderjson.set_max_string_length = function(length) { renderjson.options.max_string_length = typeof length == "string" &&
length.toLowerCase() === "none" ? Number.MAX_VALUE
: length;
return renderjson; };
renderjson.set_sort_objects = function(sort_bool) { renderjson.options.sort_objects = sort_bool;
return renderjson; };
renderjson.set_replacer = function(replacer) { renderjson.options.replacer = replacer;
return renderjson; };
renderjson.set_collapse_msg = function(collapse_msg) { renderjson.options.collapse_msg = collapse_msg;
return renderjson; };
renderjson.set_property_list = function(prop_list) { renderjson.options.property_list = prop_list;
return renderjson; };
// Backwards compatiblity. Use set_show_to_level() for new code.
renderjson.set_show_by_default = function(show) { renderjson.options.show_to_level = show ? Number.MAX_VALUE : 0;
return renderjson; };
renderjson.options = {};
renderjson.set_icons('⊕', '⊖');
renderjson.set_show_by_default(false);
renderjson.set_sort_objects(false);
renderjson.set_max_string_length("none");
renderjson.set_replacer(void 0);
renderjson.set_property_list(void 0);
renderjson.set_collapse_msg(function(len) { return len + " item" + (len==1 ? "" : "s") })
return renderjson;
})();
if (define) define({renderjson:renderjson})
else (module||{}).exports = (window||{}).renderjson = renderjson;