fix: require Pi 0.86 and test transcript context mapping

.gitignore

@@ -4,3 +4,4 @@ package-lock.json
 .DS_Store
 *.log
 .env
+.reference/

README.md

@@ -16,9 +16,9 @@ Those models are available through the local Devin CLI. This package uses that C
 
 ## Requirements
 
-- Pi Coding Agent 0.80+
+- Pi Coding Agent 0.86+
 - A signed-in [Devin CLI](https://docs.devin.ai/cli) (`devin auth status`)
-- Node 18+
+- Node 22.19+ (required by Pi 0.86)
 
 The CLI binary is resolved in this order:
 
@@ -35,12 +35,16 @@ From git:
 pi install git:github.com/kashyab12/pi-devin
 ```
 
-After npm publish:
+From npm:
 
 ```bash
 pi install npm:pi-devin
 ```
 
+The published `pi-devin@0.1.2` predates Pi 0.86 support. For Pi 0.86+, use the git install above until a newer npm release is available.
+
+`pi-devin-local` is a separate npm package maintained in the [mizorewww/pi-devin fork](https://github.com/mizorewww/pi-devin). Changes merged here do not update that package. Install only one: both packages register the `devin` provider, so their registrations can overwrite each other.
+
 Local checkout:
 
 ```bash

package.json

@@ -29,17 +29,18 @@
     "LICENSE"
   ],
   "scripts": {
+    "test": "node --test test/*.test.mjs",
     "typecheck": "tsc --noEmit"
   },
   "peerDependencies": {
-    "@earendil-works/pi-ai": "*",
+    "@earendil-works/pi-ai": ">=0.86.0",
-    "@earendil-works/pi-coding-agent": "*"
+    "@earendil-works/pi-coding-agent": ">=0.86.0"
   },
   "devDependencies": {
     "@types/node": "^24.13.3",
     "typescript": "^5.9.2"
   },
   "engines": {
-    "node": ">=18.0.0"
+    "node": ">=22.19.0"
   }
 }

test/context-map.test.mjs

@@ -0,0 +1,49 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import { normalizeContext } from "@earendil-works/pi-ai";
+import { mapContextToChat } from "../src/context-map.ts";
+
+const tool = (name) => ({
+  name,
+  description: name,
+  parameters: { type: "object", properties: {} },
+});
+
+// Regression for #7: Pi 0.86 moves prompt and tools into system messages.
+test("preserves the prompt and tools from a normalized transcript", () => {
+  const read = tool("read");
+  const context = normalizeContext({
+    systemPrompt: "Inspect the repository.",
+    tools: [read],
+    messages: [{ role: "user", content: "Read README", timestamp: 1 }],
+  });
+  assert.deepEqual(mapContextToChat(context), {
+    messages: [
+      { role: "system", content: "Inspect the repository." },
+      { role: "user", content: "Read README" },
+    ],
+    tools: [read],
+  });
+});
+
+test("applies later instruction, section, and tool changes", () => {
+  const bash = tool("bash");
+  const context = {
+    messages: [
+      { role: "system", content: "Inspect the repository.", sections: { policy: "Old policy", obsolete: "Remove me" }, toolsAdded: [tool("read")], timestamp: 0 },
+      { role: "user", content: "Continue", timestamp: 1 },
+      { role: "system", content: "Use bash.", sections: { policy: "Do not edit.", obsolete: null }, toolsRemoved: [{ name: "read" }], toolsAdded: [bash], timestamp: 2 },
+    ],
+  };
+  assert.deepEqual(mapContextToChat(context), {
+    messages: [
+      { role: "system", content: "Inspect the repository.\n\nUse bash.\n\nDo not edit." },
+      { role: "user", content: "Continue" },
+    ],
+    tools: [bash],
+  });
+});
+
+test("accepts an empty transcript", () => {
+  assert.deepEqual(mapContextToChat(normalizeContext({ messages: [] })), { messages: [], tools: [] });
+});