Merge remote-tracking branch 'origin/stack/agent-profiles-1-seam' into stack/agent-profiles-3-wire

# Conflicts:
#	docs/module-graph.md
#	packages/host/apiproxy/src/api-proxy.ts
#	packages/host/apiproxy/tsconfig.json

docs/config-catalog.md

@@ -14,7 +14,7 @@ A `Requires:` line lists the service keys the plugin `inject`s: its `cordis.yml`
 Requires: `agents`
 
 ```ts config-catalog
-/** Plugin config: the provider/model target used for each ACP-created agent. */
+/** Plugin config: the provider/model selection used for each ACP-created agent. */
 export interface AcpConfig {
   /** Provider route for created agents. */
   provider?: string
@@ -80,6 +80,20 @@ Depends on: [`agentCore`](../packages/examples/agent-spine-demo/src/index.ts) ·
 
 Source: [`packages/examples/acp-demo/src/index.ts:39`](../packages/examples/acp-demo/src/index.ts)
 
+## `@deepseek-ai/dsh-agent-default-model`
+
+```ts config-catalog
+/** Composition entry for the default model selection. */
+export interface Config {
+  /** Registered provider route. */
+  provider: string
+  /** Provider-owned model id. */
+  model: string
+}
+```
+
+Source: [`packages/core/agent-default-model/src/index.ts:41`](../packages/core/agent-default-model/src/index.ts)
+
 ## `@deepseek-ai/dsh-agent-loop`
 
 Requires: `agents` · `sessions` · `llm` · `tools` · `systemPrompt`
@@ -506,17 +520,17 @@ Source: [`packages/goal/goal/src/index.ts:116`](../packages/goal/goal/src/index.
 
 ## `@deepseek-ai/dsh-headless`
 
-Requires: `apiProxy` · `httpServer`
+Requires: `agentDefaultModel` · `agents` · `sessions`
 
 ```ts config-catalog
 /** Plugin config: the task, patched in by the launcher. */
 export interface Config {
-  /** The prompt text for the single turn. */
+  /** The prompt text for the single run. */
   task: string
 }
 ```
 
-Source: [`packages/bundle/headless/src/index.ts:32`](../packages/bundle/headless/src/index.ts)
+Source: [`packages/bundle/headless/src/index.ts:29`](../packages/bundle/headless/src/index.ts)
 
 ## `@deepseek-ai/dsh-hooks-claude`
 
@@ -581,32 +595,17 @@ Source: [`packages/hooks/hooks-codex/src/index.ts:44`](../packages/hooks/hooks-c
 
 ## `@deepseek-ai/dsh-host-apiproxy`
 
-Requires: `agents` · `directoryPicker` · `llm` · `sessions` · `subagents` · `sessionQuery` · `tools` · `userInteraction` · `workspace`
+Requires: `agentDefaultModel` · `agents` · `directoryPicker` · `llm` · `sessions` · `subagents` · `sessionQuery` · `tools` · `userInteraction` · `workspace`
 
 ```ts config-catalog
-/**
- * Gateway plugin config: host-level agent routing and Workspace creation root.
- *
- * `reasoningEffort` is deliberately absent, so the section carries one field
- * the composition cannot. The seam resolves a section by MERGING the user
- * layer over the composition entry per field, and an absent key cannot
- * override a present one — so a composition-set effort would survive every
- * later switch to a model that has none, and strand it for the next session
- * to fail on. Effort is a per-model fact anyway: a deployment default belongs
- * on the adapter profile (`llm-pi-ai`'s `reasoning`, `llm-deepseek`'s own),
- * which resolves per model rather than per gateway.
- */
+/** Gateway plugin config: the Host-only Workspace creation root. */
 export interface Config {
-  /** Default provider route for created agents. */
-  provider: string
-  /** Default model id. */
-  model: string
   /** Parent directory for name-created Workspaces; defaults to the Host cwd. */
   workspaceRoot?: string
 }
 ```
 
-Source: [`packages/host/apiproxy/src/index.ts:67`](../packages/host/apiproxy/src/index.ts)
+Source: [`packages/host/apiproxy/src/index.ts:38`](../packages/host/apiproxy/src/index.ts)
 
 ## `@deepseek-ai/dsh-host-directory-picker-browse`
 
@@ -655,7 +654,7 @@ Source: [`packages/support/invariants/src/index.ts:15`](../packages/support/inva
 Requires: `agents`
 
 ```ts config-catalog
-/** JSON-RPC deployment config plus runtime-only test seams. */
+/** JSON-RPC deployment config plus runtime-only test hooks. */
 export interface JsonRpcConfig {
   /** Report max-token turn/subagent termination as a successful SDK result. */
   maxTokensAsSuccess?: boolean
@@ -1246,9 +1245,10 @@ export interface Config {
    * Override the runner argv; bwrap-shaped profile arguments are appended. A
    * non-empty override asserts full enforcement and skips built-in selection and
    * probing. A runner that starts but refuses its profile must be identifiable by
-   * {@link runnerFailureSignatures}. Consumers classify spawn rejection; only
-   * attributable `ENOENT` or `EACCES` with runner argv[0] provenance becomes an
-   * infrastructure failure.
+   * {@link runnerFailureSignatures}. Consumers classify a spawn rejection only after
+   * confirming the workdir is usable. `ENOENT` or `EACCES` identifies the runner when
+   * `error.path` equals argv[0] and `error.syscall` is `spawn` or `spawn <runner>`, or
+   * when `error.path` is absent and `error.syscall` is exactly `spawn <runner>`.
    */
   runnerCommand?: string[]
   /**
@@ -1564,7 +1564,7 @@ export interface Config {
 }
 ```
 
-Source: [`packages/skill/skill/src/index.ts:265`](../packages/skill/skill/src/index.ts)
+Source: [`packages/skill/skill/src/index.ts:266`](../packages/skill/skill/src/index.ts)
 
 ## `@deepseek-ai/dsh-skill-local`
 
@@ -2186,7 +2186,7 @@ export interface Config {
 }
 ```
 
-Source: [`packages/fs/tool-str-replace-editor/src/index.ts:496`](../packages/fs/tool-str-replace-editor/src/index.ts)
+Source: [`packages/fs/tool-str-replace-editor/src/index.ts:497`](../packages/fs/tool-str-replace-editor/src/index.ts)
 
 ## `@deepseek-ai/dsh-tool-subagent`