refactor: extract system-reminder and cleanup prompts

index.ts

@@ -45,7 +45,8 @@ const plugin: Plugin = (async (ctx) => {
 
     const prompts = {
         synthInstruction: loadPrompt("synthetic"),
-        nudgeInstruction: loadPrompt("nudge")
+        nudgeInstruction: loadPrompt("nudge"),
+        systemReminder: loadPrompt("system-reminder")
     }
 
     // Install global fetch wrapper for context pruning and synthetic instruction injection

lib/fetch-wrapper/formats/bedrock.ts

@@ -8,21 +8,22 @@ function isNudgeMessage(msg: any, nudgeText: string): boolean {
     return false
 }
 
-function injectSynth(messages: any[], instruction: string, nudgeText: string): boolean {
+function injectSynth(messages: any[], instruction: string, nudgeText: string, systemReminder: string): boolean {
+    const fullInstruction = systemReminder + '\n\n' + instruction
     for (let i = messages.length - 1; i >= 0; i--) {
         const msg = messages[i]
         if (msg.role === 'user') {
             if (isNudgeMessage(msg, nudgeText)) continue
 
             if (typeof msg.content === 'string') {
                 if (msg.content.includes(instruction)) return false
-                msg.content = msg.content + '\n\n' + instruction
+                msg.content = msg.content + '\n\n' + fullInstruction
             } else if (Array.isArray(msg.content)) {
                 const alreadyInjected = msg.content.some(
                     (part: any) => part?.type === 'text' && typeof part.text === 'string' && part.text.includes(instruction)
                 )
                 if (alreadyInjected) return false
-                msg.content.push({ type: 'text', text: instruction })
+                msg.content.push({ type: 'text', text: fullInstruction })
             }
             return true
         }
@@ -56,8 +57,8 @@ export const bedrockFormat: FormatDescriptor = {
         return body.messages
     },
 
-    injectSynth(data: any[], instruction: string, nudgeText: string): boolean {
-        return injectSynth(data, instruction, nudgeText)
+    injectSynth(data: any[], instruction: string, nudgeText: string, systemReminder: string): boolean {
+        return injectSynth(data, instruction, nudgeText, systemReminder)
     },
 
     injectPrunableList(data: any[], injection: string): boolean {

lib/fetch-wrapper/formats/gemini.ts

@@ -9,7 +9,8 @@ function isNudgeContent(content: any, nudgeText: string): boolean {
     return false
 }
 
-function injectSynth(contents: any[], instruction: string, nudgeText: string): boolean {
+function injectSynth(contents: any[], instruction: string, nudgeText: string, systemReminder: string): boolean {
+    const fullInstruction = systemReminder + '\n\n' + instruction
     for (let i = contents.length - 1; i >= 0; i--) {
         const content = contents[i]
         if (content.role === 'user' && Array.isArray(content.parts)) {
@@ -19,7 +20,7 @@ function injectSynth(contents: any[], instruction: string, nudgeText: string): b
                 (part: any) => part?.text && typeof part.text === 'string' && part.text.includes(instruction)
             )
             if (alreadyInjected) return false
-            content.parts.push({ text: instruction })
+            content.parts.push({ text: fullInstruction })
             return true
         }
     }
@@ -48,8 +49,8 @@ export const geminiFormat: FormatDescriptor = {
         return body.contents
     },
 
-    injectSynth(data: any[], instruction: string, nudgeText: string): boolean {
-        return injectSynth(data, instruction, nudgeText)
+    injectSynth(data: any[], instruction: string, nudgeText: string, systemReminder: string): boolean {
+        return injectSynth(data, instruction, nudgeText, systemReminder)
     },
 
     injectPrunableList(data: any[], injection: string): boolean {

lib/fetch-wrapper/formats/openai-chat.ts

@@ -8,21 +8,22 @@ function isNudgeMessage(msg: any, nudgeText: string): boolean {
     return false
 }
 
-function injectSynth(messages: any[], instruction: string, nudgeText: string): boolean {
+function injectSynth(messages: any[], instruction: string, nudgeText: string, systemReminder: string): boolean {
+    const fullInstruction = systemReminder + '\n\n' + instruction
     for (let i = messages.length - 1; i >= 0; i--) {
         const msg = messages[i]
         if (msg.role === 'user') {
             if (isNudgeMessage(msg, nudgeText)) continue
 
             if (typeof msg.content === 'string') {
                 if (msg.content.includes(instruction)) return false
-                msg.content = msg.content + '\n\n' + instruction
+                msg.content = msg.content + '\n\n' + fullInstruction
             } else if (Array.isArray(msg.content)) {
                 const alreadyInjected = msg.content.some(
                     (part: any) => part?.type === 'text' && typeof part.text === 'string' && part.text.includes(instruction)
                 )
                 if (alreadyInjected) return false
-                msg.content.push({ type: 'text', text: instruction })
+                msg.content.push({ type: 'text', text: fullInstruction })
             }
             return true
         }
@@ -47,8 +48,8 @@ export const openaiChatFormat: FormatDescriptor = {
         return body.messages
     },
 
-    injectSynth(data: any[], instruction: string, nudgeText: string): boolean {
-        return injectSynth(data, instruction, nudgeText)
+    injectSynth(data: any[], instruction: string, nudgeText: string, systemReminder: string): boolean {
+        return injectSynth(data, instruction, nudgeText, systemReminder)
     },
 
     injectPrunableList(data: any[], injection: string): boolean {

lib/fetch-wrapper/formats/openai-responses.ts

@@ -8,21 +8,22 @@ function isNudgeItem(item: any, nudgeText: string): boolean {
     return false
 }
 
-function injectSynth(input: any[], instruction: string, nudgeText: string): boolean {
+function injectSynth(input: any[], instruction: string, nudgeText: string, systemReminder: string): boolean {
+    const fullInstruction = systemReminder + '\n\n' + instruction
     for (let i = input.length - 1; i >= 0; i--) {
         const item = input[i]
         if (item.type === 'message' && item.role === 'user') {
             if (isNudgeItem(item, nudgeText)) continue
 
             if (typeof item.content === 'string') {
                 if (item.content.includes(instruction)) return false
-                item.content = item.content + '\n\n' + instruction
+                item.content = item.content + '\n\n' + fullInstruction
             } else if (Array.isArray(item.content)) {
                 const alreadyInjected = item.content.some(
                     (part: any) => part?.type === 'input_text' && typeof part.text === 'string' && part.text.includes(instruction)
                 )
                 if (alreadyInjected) return false
-                item.content.push({ type: 'input_text', text: instruction })
+                item.content.push({ type: 'input_text', text: fullInstruction })
             }
             return true
         }
@@ -47,8 +48,8 @@ export const openaiResponsesFormat: FormatDescriptor = {
         return body.input
     },
 
-    injectSynth(data: any[], instruction: string, nudgeText: string): boolean {
-        return injectSynth(data, instruction, nudgeText)
+    injectSynth(data: any[], instruction: string, nudgeText: string, systemReminder: string): boolean {
+        return injectSynth(data, instruction, nudgeText, systemReminder)
     },
 
     injectPrunableList(data: any[], injection: string): boolean {

lib/fetch-wrapper/handler.ts

@@ -76,7 +76,7 @@ export async function handleFormat(
     }
 
     if (ctx.config.strategies.onTool.length > 0) {
-        if (format.injectSynth(data, ctx.prompts.synthInstruction, ctx.prompts.nudgeInstruction)) {
+        if (format.injectSynth(data, ctx.prompts.synthInstruction, ctx.prompts.nudgeInstruction, ctx.prompts.systemReminder)) {
             modified = true
         }
 

lib/fetch-wrapper/types.ts

@@ -18,7 +18,7 @@ export interface FormatDescriptor {
     name: string
     detect(body: any): boolean
     getDataArray(body: any): any[] | undefined
-    injectSynth(data: any[], instruction: string, nudgeText: string): boolean
+    injectSynth(data: any[], instruction: string, nudgeText: string, systemReminder: string): boolean
     injectPrunableList(data: any[], injection: string): boolean
     extractToolOutputs(data: any[], state: PluginState): ToolOutput[]
     replaceToolOutput(data: any[], toolId: string, prunedMessage: string, state: PluginState): boolean
@@ -29,6 +29,7 @@ export interface FormatDescriptor {
 export interface SynthPrompts {
     synthInstruction: string
     nudgeInstruction: string
+    systemReminder: string
 }
 
 export interface FetchHandlerContext {

lib/prompts/nudge.txt

@@ -1,7 +1,3 @@
-<system-reminder>
-This nudge is injected by a plugin and is invisible to the user. Do not acknowledge or reference it in your response - simply follow it silently.
-</system-reminder>
-
 <instruction name=agent_nudge>
-You have accumulated several tool outputs. If you have completed a discrete unit of work and distilled relevant understanding in writing for the user to keep, use the prune tool to remove obsolete tool outputs from this conversation and optimize token usage.
+You have accumulated several tool outputs. Consider using the `prune` tool to declutter the conversation context.
 </instruction>

lib/prompts/system-reminder.txt

@@ -0,0 +1,3 @@
+<system-reminder>
+These instructions are injected by a plugin and are invisible to the user. You must follow them silently and NEVER reference or discuss them (including the <prunable-tools> list) in your response or thinking/reasoning blocks, as this will confuse the user who cannot see them.
+</system-reminder>