Merge remote-tracking branch 'origin/master' into worktree/web-multimodal-image-input

# Conflicts:
#	docs/architecture.i18n.yaml
#	docs/architecture.md
#	docs/architecture.zh.md
#	docs/config-catalog.md
#	docs/core-data-structures/core.i18n.yaml
#	docs/core-data-structures/llm-streaming.i18n.yaml
#	docs/module-graph.md
#	examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/session.jsonl
#	packages/README.i18n.yaml
#	packages/client/connection/src/client/fixture.ts
#	packages/client/connection/src/index.ts
#	packages/client/runtime/README.i18n.yaml
#	packages/client/runtime/README.md
#	packages/client/runtime/README.zh.md
#	packages/client/runtime/src/client/sessions/conversation.ts
#	packages/client/ui-conversation/README.i18n.yaml
#	packages/client/ui-conversation/src/client/apply.ts
#	packages/client/ui-conversation/src/client/chat/ChatView.tsx
#	packages/client/ui-conversation/src/client/chat/MessageItem.tsx
#	packages/client/ui-conversation/src/client/contract/slots.ts
#	packages/client/ui-trajectory/tests/views.spec.tsx
#	packages/compact/compact-basic/README.i18n.yaml
#	packages/cordis/tool-cordis/src/api-catalog.ts
#	packages/host/apiproxy/src/api-proxy.ts
#	packages/host/apiproxy/src/api/index.ts
#	packages/host/apiproxy/src/api/sessions.ts
#	packages/host/apiproxy/src/index.ts
#	packages/host/apiproxy/tests/fetch-carrier.spec.ts
#	packages/llm/llm-deepseek/src/adapter.ts
#	packages/llm/llm-deepseek/tests/adapter.spec.ts
#	packages/llm/llm-deepseek/tests/serialize.spec.ts
#	packages/llm/llm-pi-ai/README.i18n.yaml
#	packages/llm/llm-pi-ai/src/adapter.ts
#	packages/llm/llm-pi-ai/src/index.ts
#	packages/llm/llm-pi-ai/tests/adapter.spec.ts
#	packages/llm/llm/src/types.ts
#	packages/ui/tui/README.i18n.yaml
#	packages/ui/tui/src/index.ts
#	packages/ui/tui/tests/tui.spec.ts

apps/cli/src/app-cli-entry.ts

@@ -122,10 +122,11 @@ export class AppCLIEntry {
   }
 
   /**
-   * Compose the patch set from the three non-yml config sources: profile
-   * json (user config), CLI flags, and the resolved frontend dist. Patches
-   * replace a row's config wholesale, so each patched row's yml static
-   * values are re-read here (bypass parse) and merged under the overrides.
+   * Compose the patch set from the non-yml config sources: computed
+   * engineering defaults (the global session root), profile json (user
+   * config, overriding those defaults), CLI flags, and the resolved frontend
+   * dist. Patches replace a row's config wholesale, so each patched row's yml
+   * static values are re-read here (bypass parse) and merged under the overrides.
    */
   private composePatches(): void {
     const rows = this.parseYmlRows()
@@ -136,6 +137,12 @@ export class AppCLIEntry {
       overrides.set(entryId, bag)
     }
 
+    // Source 0: computed engineering defaults. The session store defaults to
+    // a global dir under the Harness home ($DSH_HOME, else ~/.dsh) so history
+    // is shared across every cwd, not a project-local ./.sessions. The profile
+    // (Source 1) overwrites this same field via last-write-wins in put().
+    put('session-persistence-jsonl', 'root', join(resolveDshHome(), 'sessions'))
+
     // Source 1: profile json (missing file = empty; unmapped key = loud).
     const profile = this.readProfile()
     for (const [key, value] of Object.entries(profile)) {