chore(release): prepare 0.20.0

Removed the outdated Gemini resume warning from the README, mirrored the updated docs into packages/core/README.md, and added a v0.20.0 changelog entry covering the new session support. Bumped every package (root, adapters, ACP server, examples) to 0.20.0, refreshed package-lock/pnpm-lock, and documented that Gemini sessions are resumable.

Author: OhadAssulin

CHANGELOG.md

@@ -1,5 +1,14 @@
 # Changelog
 
+## [0.20.0] - 2025-11-19
+### ♻️ Gemini Resume Support
+- `@headless-coder-sdk/gemini-adapter` now captures CLI session ids/indexes and forwards `--resume` for every subsequent run, so both repeated thread runs and explicit `resumeThread()` flows continue the same workspace.
+- Added `examples/src/gemini-resume.test.ts` to cover back-to-back runs and the resumeThread path, skipping automatically when the Gemini CLI is unavailable.
+
+### 📚 Documentation & Versioning
+- README now documents that Gemini sessions are resumable, and the updated content is mirrored to the core package README.
+- Bumped every package to `0.20.0` to release the Gemini resume support and documentation updates.
+
 ## [0.19.0] - 2025-11-19
 ### ✨ Claude Native Structured Outputs
 - `@headless-coder-sdk/claude-adapter` now relies entirely on Claude Agent SDK's native `structured_output`, removing the legacy prompt-based JSON parsing fallback so schemas are enforced by Claude itself.

README.md

@@ -112,7 +112,7 @@ const turn = await thread.run('Summarise the repo in JSON', {
 console.log(turn.json);
 ```
 
-> ⚠️ Gemini CLI resume support is pending upstream ([PR #10719](https://github.com/google-gemini/gemini-cli/pull/10719)).
+Gemini sessions are resumable—reuse the same thread handle for follow-up runs or call `resumeThread()` with a stored `threadId` to keep the CLI conversation active.
 
 ---
 

examples/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@headless-coder-sdk/examples-tests",
   "private": true,
-  "version": "0.19.0",
+  "version": "0.20.0",
   "type": "module",
   "main": "src/codex-web-calculator.test.ts",
   "files": [

package-lock.json

@@ -1,7 +1,7 @@
 {
   "name": "headless-coder-sdk",
   "private": true,
-  "version": "0.19.0",
+  "version": "0.20.0",
   "type": "module",
   "workspaces": [
     "packages/*",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@headless-coder-sdk/acp-server",
-  "version": "0.19.0",
+  "version": "0.20.0",
   "type": "module",
   "scripts": {
     "dev": "next dev -p 8000",

packages/acp-server/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@headless-coder-sdk/claude-adapter",
-  "version": "0.19.0",
+  "version": "0.20.0",
   "type": "module",
   "main": "./dist/index.cjs",
   "module": "./dist/index.js",
@@ -19,7 +19,7 @@
   },
   "peerDependencies": {
     "@anthropic-ai/claude-agent-sdk": ">=0.1.46",
-    "@headless-coder-sdk/core": "^0.19.0"
+    "@headless-coder-sdk/core": "^0.20.0"
   },
   "devDependencies": {
     "typescript": "^5.4.0",

packages/claude-adapter/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@headless-coder-sdk/codex-adapter",
-  "version": "0.19.0",
+  "version": "0.20.0",
   "type": "module",
   "main": "./dist/index.cjs",
   "module": "./dist/index.js",
@@ -27,7 +27,7 @@
     "build": "tsup --config tsup.config.ts"
   },
   "peerDependencies": {
-    "@headless-coder-sdk/core": "^0.19.0",
+    "@headless-coder-sdk/core": "^0.20.0",
     "@openai/codex-sdk": "^0.58.0"
   },
   "devDependencies": {

packages/codex-adapter/package.json

@@ -112,7 +112,7 @@ const turn = await thread.run('Summarise the repo in JSON', {
 console.log(turn.json);
 ```
 
-> ⚠️ Gemini CLI resume support is pending upstream ([PR #10719](https://github.com/google-gemini/gemini-cli/pull/10719)).
+Gemini sessions are resumable—reuse the same thread handle for follow-up runs or call `resumeThread()` with a stored `threadId` to keep the CLI conversation active.
 
 ---
 

packages/core/README.md

@@ -1,6 +1,6 @@
 {
   "name": "@headless-coder-sdk/core",
-  "version": "0.19.0",
+  "version": "0.20.0",
   "description": "Unified SDK for headless AI coders (Codex, Claude, Gemini) with standardized threading, streaming, and sandboxing.",
   "type": "module",
   "main": "./dist/index.cjs",