Merge remote-tracking branch 'origin/master' into docs/post-v3-release-proofreading

# Conflicts:
#	.agents/notes/implemented/feature/2026-07-23-session-telemetry-otel-revival.i18n.yaml
#	.agents/notes/implemented/feature/2026-07-23-session-telemetry-otel-revival.zh.md
#	.agents/notes/implemented/feature/2026-07-31-web-telemetry-default-mount.i18n.yaml
#	.agents/notes/implemented/feature/2026-07-31-web-telemetry-default-mount.zh.md
#	README.i18n.yaml
#	README.zh.md
#	apps/cli/reference/README.i18n.yaml
#	apps/cli/reference/README.zh.md
#	scripts/snapshots/translation-prompt-v4/request-response.expected.json

docs/config-catalog.zh.md

@@ -1607,7 +1607,7 @@ export interface Config {
  * and shutdown deadline at plugin load; `DISABLED` reads neither.
  */
 export interface Config {
-  /** Sharing policy; defaults to immediate `FULL` delivery. */
+  /** Sharing policy; defaults to local-only `DISABLED` behavior. */
   mode?: TelemetryMode
   /**
    * Passed verbatim to the SDK's OTLP/HTTP log exporter — the complete