Add hidden prompt prefix setting

src/lib/Chat.svelte

@@ -24,7 +24,7 @@
   } from './Types.svelte'
   import Prompts from './Prompts.svelte'
   import Messages from './Messages.svelte'
-  import { prepareSummaryPrompt, restartProfile } from './Profiles.svelte'
+  import { mergeProfileFields, prepareSummaryPrompt, restartProfile } from './Profiles.svelte'
 
   import { afterUpdate, onMount, onDestroy } from 'svelte'
   import Fa from 'svelte-fa/src/fa.svelte'
@@ -188,6 +188,8 @@
   
     let summarySize = chatSettings.summarySize
 
+    const hiddenPromptPrefix = mergeProfileFields(chatSettings, chatSettings.hiddenPromptPrefix).trim()
+
     // console.log('Estimated',promptTokenCount,'prompt token for this request')
 
     if (chatSettings.continuousChat && !opts.didSummary &&
@@ -342,7 +344,14 @@
 
     try {
       const request: Request = {
-        messages: filtered.map(m => { return { role: m.role, content: m.content } }) as Message[],
+        messages: filtered.map((m, i) => {
+          const r = { role: m.role, content: m.content }
+          if (i === filtered.length - 1 && m.role === 'user' && hiddenPromptPrefix && !opts.summaryRequest) {
+            // If the last prompt is a user prompt, and we have a hiddenPromptPrefix, inject it
+            r.content = hiddenPromptPrefix + '\n\n' + m.content
+          }
+          return r
+        }) as Message[],
 
         // Provide the settings by mapping the settingsMap to key/value pairs
         ...getRequestSettingList().reduce((acc, setting) => {
@@ -351,16 +360,15 @@
           if (typeof setting.apiTransform === 'function') {
             value = setting.apiTransform(chatId, setting, value)
           }
-          if (opts.summaryRequest && opts.maxTokens) {
-            // requesting summary. do overrides
-            if (key === 'max_tokens') value = opts.maxTokens // only as large as we need for summary
-            if (key === 'n') value = 1 // never more than one completion for summary
+          if (opts.maxTokens) {
+            if (key === 'max_tokens') value = opts.maxTokens // only as large as requested
           }
-          if (opts.streaming) {
+          if (opts.streaming || opts.summaryRequest) {
             /*
             Streaming goes insane with more than one completion.
             Doesn't seem like there's any way to separate the jumbled mess of deltas for the
             different completions.
+            Summary should only have one completion
             */
             if (key === 'n') value = 1
           }

src/lib/Profiles.svelte

@@ -70,22 +70,25 @@ export const getProfile = (key:string, forReset:boolean = false):ChatSettings =>
     return clone
 }
 
+export const mergeProfileFields = (settings: ChatSettings, content: string|undefined, maxWords: number|undefined = undefined): string => {
+    if (!content?.toString) return ''
+    content = (content + '').replaceAll('[[CHARACTER_NAME]]', settings.characterName || 'ChatGPT')
+    if (maxWords) content = (content + '').replaceAll('[[MAX_WORDS]]', maxWords.toString())
+    return content
+}
+
 export const prepareProfilePrompt = (chatId:number) => {
     const settings = getChatSettings(chatId)
-    const characterName = settings.characterName
-    const currentProfilePrompt = settings.systemPrompt
-    return currentProfilePrompt.replaceAll('[[CHARACTER_NAME]]', characterName)
+    return mergeProfileFields(settings, settings.systemPrompt).trim()
 }
 
 export const prepareSummaryPrompt = (chatId:number, promptsSize:number, maxTokens:number|undefined = undefined) => {
     const settings = getChatSettings(chatId)
-    const characterName = settings.characterName || 'ChatGPT'
     maxTokens = maxTokens || settings.summarySize
     maxTokens = Math.min(Math.floor(promptsSize / 4), maxTokens) // Make sure we're shrinking by at least a 4th
     const currentSummaryPrompt = settings.summaryPrompt
-    return currentSummaryPrompt
-      .replaceAll('[[CHARACTER_NAME]]', characterName)
-      .replaceAll('[[MAX_WORDS]]', Math.floor(maxTokens * 0.75).toString()) // ~.75 words per token.  May need to reduce
+    // ~.75 words per token.  May need to reduce
+    return mergeProfileFields(settings, currentSummaryPrompt, Math.floor(maxTokens * 0.75)).trim()
 }
 
 // Restart currently loaded profile

src/lib/Settings.svelte

@@ -84,6 +84,7 @@ const defaults:ChatSettings = {
   systemPrompt: '',
   autoStartSession: false,
   trainingPrompts: [],
+  hiddenPromptPrefix: '',
   // useResponseAlteration: false,
   // responseAlterations: [],
   isDirty: false
@@ -167,6 +168,14 @@ const systemPromptSettings: ChatSetting[] = [
         type: 'textarea',
         hide: (chatId) => !getChatSettings(chatId).useSystemPrompt
       },
+      {
+        key: 'hiddenPromptPrefix',
+        name: 'Hidden Prompt Prefix',
+        title: 'A prompt that will be silently injected before every user prompt.',
+        placeholder: 'Enter user prompt prefix here.  You can remind ChatGPT how to act.',
+        type: 'textarea',
+        hide: (chatId) => !getChatSettings(chatId).useSystemPrompt
+      },
       {
         key: 'trainingPrompts',
         name: 'Training Prompts',

src/lib/Types.svelte

@@ -58,7 +58,6 @@
     profileName: string,
     profileDescription: string,
     continuousChat: (''|'fifo'|'summary');
-    // useSummarization: boolean;
     summaryThreshold: number;
     summarySize: number;
     pinTop: number;
@@ -67,6 +66,7 @@
     useSystemPrompt: boolean;
     systemPrompt: string;
     autoStartSession: boolean;
+    hiddenPromptPrefix: string;
     trainingPrompts?: Message[];
     useResponseAlteration?: boolean;
     responseAlterations?: ResponseAlteration[];