feat: package Pi extensions as Bun workspaces

extensions/shared/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 JB
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

extensions/shared/README.md

@@ -0,0 +1,3 @@
+# @_jb/pi-shared
+
+Shared runtime utilities used by the `@_jb` Pi extension packages. This is a library package and does not register a Pi extension by itself.

extensions/shared/child-session.test.ts

@@ -106,7 +106,6 @@ test("child denylist keeps extension and workflow structured tools available", a
         "subagent_check",
         "subagent_list",
         "workflow",
-        "pi_workflow",
         "ask_user",
       ],
     );

extensions/shared/child-session.ts

@@ -18,7 +18,6 @@ export const CHILD_EXCLUDED_TOOL_NAMES = [
   "subagent_check",
   "subagent_list",
   "workflow",
-  "pi_workflow",
   "ask_user",
 ] as const;
 

extensions/shared/package.json

@@ -0,0 +1,28 @@
+{
+  "name": "@_jb/pi-shared",
+  "version": "0.1.0",
+  "description": "Shared runtime utilities for @_jb Pi extensions.",
+  "type": "module",
+  "license": "MIT",
+  "engines": { "node": ">=22.19.0" },
+  "keywords": ["pi-extension", "library"],
+  "files": ["*.ts", "!*.test.ts", "README.md", "LICENSE"],
+  "exports": {
+    "./activity-status": "./activity-status.ts",
+    "./child-session": "./child-session.ts",
+    "./context-utilization": "./context-utilization.ts",
+    "./tool-call-timeout": "./tool-call-timeout.ts"
+  },
+  "peerDependencies": {
+    "@earendil-works/pi-coding-agent": "catalog:pi-peer",
+    "typebox": "catalog:pi-peer"
+  },
+  "publishConfig": {
+    "registry": "https://git.jb.codes/api/packages/jb/npm/"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+ssh://git@git.jb.codes:7722/jb/harness-tools.git",
+    "directory": "extensions/shared"
+  }
+}