From 6e82ef238452a09454462c506a25ee90ecf1c19d Mon Sep 17 00:00:00 2001
From: Maxim Harizanov <maxim.harizanov@payhawk.com>
Date: Thu, 19 Feb 2026 13:40:38 +0200
Subject: [PATCH] fix(types): restore CI compatibility for plugin hooks and
 tool context

---
 src/plugin/types.ts              | 12 +++++++++++-
 src/tools/hashline-edit/tools.ts | 11 +++++++++--
 2 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/src/plugin/types.ts b/src/plugin/types.ts
index 58325505..7b3a7cb3 100644
--- a/src/plugin/types.ts
+++ b/src/plugin/types.ts
@@ -2,7 +2,17 @@ import type { Plugin, ToolDefinition } from "@opencode-ai/plugin"
 
 export type PluginContext = Parameters<Plugin>[0]
 export type PluginInstance = Awaited<ReturnType<Plugin>>
-export type PluginInterface = Omit<PluginInstance, "experimental.session.compacting"> 
+
+type ChatHeadersHook = PluginInstance extends { "chat.headers"?: infer T }
+  ? T
+  : (input: unknown, output: unknown) => Promise<void>
+
+export type PluginInterface = Omit<
+  PluginInstance,
+  "experimental.session.compacting" | "chat.headers"
+> & {
+  "chat.headers"?: ChatHeadersHook
+}
 
 export type ToolsRecord = Record<string, ToolDefinition>
 
diff --git a/src/tools/hashline-edit/tools.ts b/src/tools/hashline-edit/tools.ts
index 61d8b916..b912bfc2 100644
--- a/src/tools/hashline-edit/tools.ts
+++ b/src/tools/hashline-edit/tools.ts
@@ -16,6 +16,10 @@ type ToolContextWithCallID = ToolContext & {
   call_id?: string
 }
 
+type ToolContextWithMetadata = ToolContextWithCallID & {
+  metadata?: (value: unknown) => void
+}
+
 function resolveToolCallID(ctx: ToolContextWithCallID): string | undefined {
   if (typeof ctx.callID === "string" && ctx.callID.trim() !== "") return ctx.callID
   if (typeof ctx.callId === "string" && ctx.callId.trim() !== "") return ctx.callId
@@ -135,6 +139,7 @@ Use \\n in text to represent literal newlines.`,
     },
     execute: async (args: HashlineEditArgs, context: ToolContext) => {
       try {
+        const metadataContext = context as ToolContextWithMetadata
         const filePath = args.filePath
         const { edits } = args
 
@@ -179,9 +184,11 @@ Use \\n in text to represent literal newlines.`,
           },
         }
 
-        context.metadata(meta)
+        if (typeof metadataContext.metadata === "function") {
+          metadataContext.metadata(meta)
+        }
 
-        const callID = resolveToolCallID(context)
+        const callID = resolveToolCallID(metadataContext)
         if (callID) {
           storeToolMetadata(context.sessionID, callID, meta)
         }