merge origin/dev into issue-13770-tool-output-docs

Resolve conflict in packages/opencode/src/tool/shell/prompt.ts to combine
truncationGuidance helper (which omits the truncation note when truncation
is disabled) with the configurable defaultTimeoutMs from origin/dev.

Fix typecheck in tool/truncate.ts by narrowing the tool_output union before
reading max_lines and max_bytes.

packages/sdk/js/package.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://json.schemastore.org/package.json",
   "name": "@opencode-ai/sdk",
-  "version": "1.15.9",
+  "version": "1.15.10",
   "type": "module",
   "license": "MIT",
   "scripts": {