SillyTavern world artifacts, versioned in place

Tracked inside SillyTavern's live data directory rather than symlinked out of
it. data/ is a bind mount into the container, so a symlink to a host path
outside that mount resolves inside the container where the target does not
exist -- broken to SillyTavern while looking correct on the host.

The .gitignore is an allowlist, denying everything and re-including named paths,
because this is live application data rather than a curated export. secrets.json
is the reason: empty today because API keys go through LiteLLM with a
placeholder, and it arms itself the moment a key is typed into the UI. This repo
is public. A denylist protects only the paths someone remembered.

Two of the four artifact types are not diffable as stored. Character cards are
PNGs with the card JSON in a tEXt chunk, and personas live inside a 48 KB
settings.json that SillyTavern rewrites on any change. st-export.py extracts
both into _text/ so the reviewable artifact is text, one-way on purpose --
re-embedding JSON into a PNG is where a mistake corrupts authored content.

Stock content is excluded: Seraphina's expression pack is 3.6 MiB of PNG the app
regenerates on startup. The stock lorebook Eldoria.json stays -- 8 KB of
readable JSON is a useful worked example of the format.

QuickReplies/Default.json

@@ -0,0 +1,66 @@
+{
+    "version": 2,
+    "name": "Default",
+    "disableSend": false,
+    "placeBeforeInput": false,
+    "injectInput": false,
+    "color": "rgba(0, 0, 0, 0)",
+    "onlyBorderColor": false,
+    "qrList": [
+        {
+            "id": 1,
+            "showLabel": false,
+            "label": "HELP",
+            "title": "",
+            "message": "/?",
+            "contextList": [],
+            "preventAutoExecute": true,
+            "isHidden": false,
+            "executeOnStartup": false,
+            "executeOnUser": false,
+            "executeOnAi": false,
+            "executeOnChatChange": false,
+            "executeOnGroupMemberDraft": false,
+            "executeOnNewChat": false,
+            "executeBeforeGeneration": false,
+            "automationId": ""
+        },
+        {
+            "id": 2,
+            "showLabel": false,
+            "label": "New Chat",
+            "title": "",
+            "message": "/newchat",
+            "contextList": [],
+            "preventAutoExecute": true,
+            "isHidden": false,
+            "executeOnStartup": false,
+            "executeOnUser": false,
+            "executeOnAi": false,
+            "executeOnChatChange": false,
+            "executeOnGroupMemberDraft": false,
+            "executeOnNewChat": false,
+            "executeBeforeGeneration": false,
+            "automationId": ""
+        },
+        {
+            "id": 3,
+            "showLabel": false,
+            "label": "Match UI to Background",
+            "title": "",
+            "message": "/bgcol",
+            "contextList": [],
+            "preventAutoExecute": true,
+            "isHidden": false,
+            "executeOnStartup": false,
+            "executeOnUser": false,
+            "executeOnAi": false,
+            "executeOnChatChange": false,
+            "executeOnGroupMemberDraft": false,
+            "executeOnNewChat": false,
+            "executeBeforeGeneration": false,
+            "automationId": ""
+        }
+    ],
+    "idIndex": 0
+}