test: update goldens for the always-on regen tools + Opus 5.0 catalog

- contracts always-on toolset gains context_health (footprint sensor, all
  sessions) + regenerate_context/regenerate_agent (declared in systemToolDefs).
- agent-tuner: non-tuner inspect set now includes context_health.
- starter-model-config: claude-opus-5 in the GHCP model family.
All three are the intended surface changes; verified green with .env.

Author: affandar

packages/sdk/test/local/agent-tuner.test.js

@@ -90,6 +90,9 @@ describe("Agent Tuner: read-only diagnostic tools", () => {
 
             const userNames = userTools.map((t) => t.name).sort();
             const expectedUser = [
+                // context_health is a self-scoped footprint sensor available to
+                // every session (regeneration M0), not just the tuner.
+                "context_health",
                 "read_agent_events",
                 "read_session_graph_edge_search_usage",
                 "read_session_graph_node_usage",

packages/sdk/test/local/contracts.test.js

@@ -60,6 +60,7 @@ const EXPECTED_ALWAYS_ON_TOOL_NAMES = [
     "read_facts",
     "delete_fact",
     "read_agent_events",
+    "context_health",
     "read_session_retrieval_usage",
     "read_session_tree_retrieval_usage",
     "read_session_graph_node_usage",
@@ -84,6 +85,8 @@ const EXPECTED_LLM_VISIBLE_TOOL_NAMES = [
     "rg",
     "skill",
     "set_session_model",
+    "regenerate_context",
+    "regenerate_agent",
     "sql",
     "stop_bash",
     "view",

packages/sdk/test/local/starter-model-config.test.js

@@ -28,6 +28,7 @@ describe("starter docker model config", () => {
             "claude-sonnet-5",
             "gpt-5.4",
             "gpt-5.4-mini",
+            "claude-opus-5",
             "claude-opus-4.8",
             "gpt-5.6-sol",
             "gpt-5.6-luna",