chore: add kilocode_change markers to shared opencode files

Mark editorContext additions in message-v2.ts, prompt.ts, and system.ts
with kilocode_change markers to ease upstream merge conflict resolution.

packages/opencode/src/session/message-v2.ts

@@ -359,6 +359,7 @@ export namespace MessageV2 {
     system: z.string().optional(),
     tools: z.record(z.string(), z.boolean()).optional(),
     variant: z.string().optional(),
+    // kilocode_change start
     editorContext: z
       .object({
         visibleFiles: z.array(z.string()).optional(),
@@ -368,6 +369,7 @@ export namespace MessageV2 {
         timezone: z.string().optional(),
       })
       .optional(),
+    // kilocode_change end
   }).meta({
     ref: "UserMessage",
   })

packages/opencode/src/session/prompt.ts

@@ -109,6 +109,7 @@ export namespace SessionPrompt {
     format: MessageV2.Format.optional(),
     system: z.string().optional(),
     variant: z.string().optional(),
+    // kilocode_change start
     editorContext: z
       .object({
         visibleFiles: z.array(z.string()).optional(),
@@ -118,6 +119,7 @@ export namespace SessionPrompt {
         timezone: z.string().optional(),
       })
       .optional(),
+    // kilocode_change end
     parts: z.array(
       z.discriminatedUnion("type", [
         MessageV2.TextPart.omit({
@@ -676,7 +678,7 @@ export namespace SessionPrompt {
       await Plugin.trigger("experimental.chat.messages.transform", {}, { messages: sessionMessages })
 
       // Build system prompt, adding structured output instruction if needed
-      const system = [...(await SystemPrompt.environment(model, lastUser.editorContext)), ...(await InstructionPrompt.system())]
+      const system = [...(await SystemPrompt.environment(model, lastUser.editorContext)), ...(await InstructionPrompt.system())] // kilocode_change
       const format = lastUser.format ?? { type: "text" }
       if (format.type === "json_schema") {
         system.push(STRUCTURED_OUTPUT_SYSTEM_PROMPT)
@@ -1003,7 +1005,7 @@ export namespace SessionPrompt {
       system: input.system,
       format: input.format,
       variant,
-      editorContext: input.editorContext,
+      editorContext: input.editorContext, // kilocode_change
     }
     using _ = defer(() => InstructionPrompt.clear(info.id))
 

packages/opencode/src/session/system.ts

@@ -51,6 +51,7 @@ export namespace SystemPrompt {
   }
   // kilocode_change end
 
+  // kilocode_change start
   export async function environment(
     model: Provider.Model,
     editorContext?: {
@@ -66,7 +67,7 @@ export namespace SystemPrompt {
       `  Working directory: ${Instance.directory}`,
       `  Is directory a git repo: ${project.vcs === "git" ? "yes" : "no"}`,
       `  Platform: ${process.platform}`,
-      ...formatTime(editorContext?.timezone), // kilocode_change
+      ...formatTime(editorContext?.timezone),
     ]
     if (editorContext?.shell) {
       envLines.push(`  Default shell: ${editorContext.shell}`)
@@ -80,6 +81,7 @@ export namespace SystemPrompt {
     if (editorContext?.openTabs?.length) {
       envLines.push(`  Open tabs: ${editorContext.openTabs.join(", ")}`)
     }
+    // kilocode_change end
     return [
       [
         `You are powered by the model named ${model.api.id}. The exact model ID is ${model.providerID}/${model.api.id}`,