Merge remote-tracking branch 'origin/master' into claude/unified-environment-credentials-c8841a

# Conflicts:
#	apps/web/tests/models-settings.e2e.ts
#	docs/config-catalog.md
#	packages/llm/llm-deepseek/README.i18n.yaml
#	packages/llm/llm-deepseek/README.md
#	packages/llm/llm-deepseek/README.zh.md
#	packages/llm/llm-deepseek/src/index.ts
#	packages/llm/llm-pi-ai/src/config.ts
#	packages/llm/llm-pi-ai/src/index.ts

examples/headless-agent/tests/fixtures/subagent-diagnostic-agent.ts

@@ -0,0 +1,26 @@
+/**
+ * Loader fixture that resumes the seeded diagnostic-scenario parent before
+ * CLI dispatch, so `list_agents` runs against its pre-seeded cold child.
+ * @module subagent-diagnostic-agent
+ */
+
+import type { Context } from 'cordis'
+import type { SessionId } from '@deepseek-ai/dsh-session'
+
+/** Fixture plugin name. */
+export const name = 'subagent-diagnostic-agent'
+/** Services that must exist before the fixture resumes its agent. */
+export const inject = ['agents', 'agentLoop', 'sessionPersistence']
+
+/**
+ * Resume the seeded session and bind its exact handle to this fixture's lifetime.
+ * @param ctx - settled agent and persistence services from the Loader tree.
+ * @returns after the resumed agent is published.
+ */
+export async function apply(ctx: Context): Promise<void> {
+  const handle = await ctx.agents.resume({
+    resumeSessionId: 'subagent-diagnostic-parent' as SessionId,
+    agentOptions: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
+  })
+  ctx.effect(() => () => handle.dispose(), 'subagent-diagnostic-agent.handle')
+}

examples/headless-agent/tests/fixtures/workspace-context-resume-agent.ts

@@ -0,0 +1,25 @@
+/**
+ * Loader fixture that resumes the seeded workspace-context session.
+ * @module workspace-context-resume-agent
+ */
+
+import type { Context } from 'cordis'
+import type { SessionId } from '@deepseek-ai/dsh-session'
+
+/** Fixture plugin name. */
+export const name = 'workspace-context-resume-agent'
+/** Services that must exist before the fixture resumes its agent. */
+export const inject = ['agents', 'agentLoop', 'sessionPersistence']
+
+/**
+ * Resume the seeded session and bind its handle to this fixture's lifetime.
+ * @param ctx - settled agent and persistence services from the Loader tree.
+ * @returns after the resumed agent is published.
+ */
+export async function apply(ctx: Context): Promise<void> {
+  const handle = await ctx.agents.resume({
+    resumeSessionId: 'workspace-context-resume' as SessionId,
+    agentOptions: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
+  })
+  ctx.effect(() => () => handle.dispose(), 'workspace-context-resume-agent.handle')
+}