Merge remote-tracking branch 'origin/xtr/session-format-migration' into xtr/message-tool-call-id

# Conflicts:
#	.agents/notes/implemented/architecture/2026-06-20-branded-ids.i18n.yaml
#	.agents/notes/implemented/architecture/2026-06-20-branded-ids.md
#	.agents/notes/implemented/architecture/2026-06-20-branded-ids.zh.md
#	packages/fs/tool-fs/tests/read-image.spec.ts
#	packages/llm/llm-deepseek/tests/adapter.e2e.ts
#	packages/llm/llm-deepseek/tests/serialize.spec.ts
#	packages/llm/llm-pi-ai/src/context.ts
#	packages/llm/llm-pi-ai/tests/context.spec.ts
#	packages/llm/llm-pi-ai/tests/convert.spec.ts
#	packages/llm/llm/src/message.ts
#	packages/llm/llm/tests/content.spec.ts

packages/examples/acp-demo/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-acp-demo",
   "description": "ACP automation server app: agent spine + JSONL persistence + ACP transport, with a JSON-RPC stdio bin",
-  "version": "0.1.1-rc.1",
+  "version": "0.1.1-rc.2",
   "publishConfig": {
     "access": "public"
   },

packages/examples/agent-spine-demo/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-agent-spine-demo",
   "description": "The default executor-less/UI-less agent spine with fallback session titles, provider-routed retry, and optional persisted goals",
-  "version": "0.1.1-rc.1",
+  "version": "0.1.1-rc.2",
   "publishConfig": {
     "access": "public"
   },

packages/examples/jsonrpc-demo/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@deepseek-ai/dsh-sdk-jsonrpc-demo",
   "description": "Bin that boots an external Cordis config for the stdio JSON-RPC SDK runtime",
-  "version": "0.1.1-rc.1",
+  "version": "0.1.1-rc.2",
   "publishConfig": {
     "access": "public"
   },