feat: support toast notifications via notificationType config option

Author: essinghigh

dcp.schema.json

@@ -26,6 +26,12 @@
             "default": "detailed",
             "description": "Level of notification shown when pruning occurs"
         },
+        "pruneNotificationType": {
+            "type": "string",
+            "enum": ["chat", "toast"],
+            "default": "chat",
+            "description": "Where to display prune notifications (chat message or toast notification)"
+        },
         "commands": {
             "type": "object",
             "description": "Configuration for DCP slash commands (/dcp)",

lib/config.ts

@@ -60,6 +60,7 @@ export interface PluginConfig {
     enabled: boolean
     debug: boolean
     pruneNotification: "off" | "minimal" | "detailed"
+    pruneNotificationType: "chat" | "toast"
     commands: Commands
     turnProtection: TurnProtection
     protectedFilePatterns: string[]
@@ -91,6 +92,7 @@ export const VALID_CONFIG_KEYS = new Set([
     "debug",
     "showUpdateToasts", // Deprecated but kept for backwards compatibility
     "pruneNotification",
+    "pruneNotificationType",
     "turnProtection",
     "turnProtection.enabled",
     "turnProtection.turns",
@@ -173,6 +175,17 @@ function validateConfigTypes(config: Record<string, any>): ValidationError[] {
         }
     }
 
+    if (config.pruneNotificationType !== undefined) {
+        const validValues = ["chat", "toast"]
+        if (!validValues.includes(config.pruneNotificationType)) {
+            errors.push({
+                key: "pruneNotificationType",
+                expected: '"chat" | "toast"',
+                actual: JSON.stringify(config.pruneNotificationType),
+            })
+        }
+    }
+
     if (config.protectedFilePatterns !== undefined) {
         if (!Array.isArray(config.protectedFilePatterns)) {
             errors.push({
@@ -454,6 +467,7 @@ const defaultConfig: PluginConfig = {
     enabled: true,
     debug: false,
     pruneNotification: "detailed",
+    pruneNotificationType: "chat",
     commands: {
         enabled: true,
         protectedTools: [...DEFAULT_PROTECTED_TOOLS],
@@ -732,6 +746,7 @@ export function getConfig(ctx: PluginInput): PluginConfig {
                 enabled: result.data.enabled ?? config.enabled,
                 debug: result.data.debug ?? config.debug,
                 pruneNotification: result.data.pruneNotification ?? config.pruneNotification,
+                pruneNotificationType: result.data.pruneNotificationType ?? config.pruneNotificationType,
                 commands: mergeCommands(config.commands, result.data.commands as any),
                 turnProtection: {
                     enabled: result.data.turnProtection?.enabled ?? config.turnProtection.enabled,
@@ -775,6 +790,7 @@ export function getConfig(ctx: PluginInput): PluginConfig {
                 enabled: result.data.enabled ?? config.enabled,
                 debug: result.data.debug ?? config.debug,
                 pruneNotification: result.data.pruneNotification ?? config.pruneNotification,
+                pruneNotificationType: result.data.pruneNotificationType ?? config.pruneNotificationType,
                 commands: mergeCommands(config.commands, result.data.commands as any),
                 turnProtection: {
                     enabled: result.data.turnProtection?.enabled ?? config.turnProtection.enabled,
@@ -815,6 +831,7 @@ export function getConfig(ctx: PluginInput): PluginConfig {
                 enabled: result.data.enabled ?? config.enabled,
                 debug: result.data.debug ?? config.debug,
                 pruneNotification: result.data.pruneNotification ?? config.pruneNotification,
+                pruneNotificationType: result.data.pruneNotificationType ?? config.pruneNotificationType,
                 commands: mergeCommands(config.commands, result.data.commands as any),
                 turnProtection: {
                     enabled: result.data.turnProtection?.enabled ?? config.turnProtection.enabled,

lib/ui/notification.ts

@@ -63,6 +63,39 @@ function buildDetailedMessage(
     return (message + formatExtracted(showDistillation ? distillation : undefined)).trim()
 }
 
+const TOAST_BODY_MAX_LINES = 12
+const TOAST_SUMMARY_MAX_CHARS = 600
+
+function truncateToastBody(body: string, maxLines: number = TOAST_BODY_MAX_LINES): string {
+    const lines = body.split("\n")
+    if (lines.length <= maxLines) {
+        return body
+    }
+    const kept = lines.slice(0, maxLines - 1)
+    const remaining = lines.length - maxLines + 1
+    return kept.join("\n") + `\n... and ${remaining} more`
+}
+
+function truncateToastSummary(summary: string, maxChars: number = TOAST_SUMMARY_MAX_CHARS): string {
+    if (summary.length <= maxChars) {
+        return summary
+    }
+    return summary.slice(0, maxChars - 3) + "..."
+}
+
+function truncateExtractedSection(message: string, maxChars: number = TOAST_SUMMARY_MAX_CHARS): string {
+    const marker = "\n\n▣ Extracted"
+    const index = message.indexOf(marker)
+    if (index === -1) {
+        return message
+    }
+    const extracted = message.slice(index)
+    if (extracted.length <= maxChars) {
+        return message
+    }
+    return message.slice(0, index) + truncateToastSummary(extracted, maxChars)
+}
+
 export async function sendUnifiedNotification(
     client: any,
     logger: Logger,
@@ -100,6 +133,22 @@ export async function sendUnifiedNotification(
                   showDistillation,
               )
 
+    if (config.pruneNotificationType === "toast") {
+        let toastMessage = truncateExtractedSection(message)
+        toastMessage =
+            config.pruneNotification === "minimal" ? toastMessage : truncateToastBody(toastMessage)
+
+        await client.tui.showToast({
+            body: {
+                title: "DCP: Prune Notification",
+                message: toastMessage,
+                variant: "info",
+                duration: 5000,
+            },
+        })
+        return true
+    }
+
     await sendIgnoredMessage(client, sessionId, message, params, logger)
     return true
 }
@@ -150,6 +199,31 @@ export async function sendCompressNotification(
         }
     }
 
+    if (config.pruneNotificationType === "toast") {
+        let toastMessage = message
+        if (config.tools.compress.showCompression) {
+            const truncatedSummary = truncateToastSummary(summary)
+            if (truncatedSummary !== summary) {
+                toastMessage = toastMessage.replace(
+                    `\n→ Compression: ${summary}`,
+                    `\n→ Compression: ${truncatedSummary}`,
+                )
+            }
+        }
+        toastMessage =
+            config.pruneNotification === "minimal" ? toastMessage : truncateToastBody(toastMessage)
+
+        await client.tui.showToast({
+            body: {
+                title: "DCP: Compress Notification",
+                message: toastMessage,
+                variant: "info",
+                duration: 5000,
+            },
+        })
+        return true
+    }
+
     await sendIgnoredMessage(client, sessionId, message, params, logger)
     return true
 }