Use Meta Muse Ember for the e2e language model

.agents/skills/verify-solzero/SKILL.md

@@ -35,7 +35,7 @@ The environment loader reads the selected private file, then `config/.env` and `
 
 ## Prove behavior
 
-Drive the public UI and HTTP endpoints through the configured e2e browser and live fetch helpers. The stack is local `alchemy dev` (Miniflare D1, KV, R2, and Durable Objects). `decisionExecutor` asks the decision model (default Cloudflare Clef) through the account's existing default AI Gateway for semantic actions and assertions, and the language model (default `anthropic/claude-haiku-5.5`) for `waitFor` and `extract`. The application does not receive that token. Follow each action with an exact deterministic assertion. Use `expect` for waiting.
+Drive the public UI and HTTP endpoints through the configured e2e browser and live fetch helpers. The stack is local `alchemy dev` (Miniflare D1, KV, R2, and Durable Objects). `decisionExecutor` asks the decision model (default Cloudflare Clef) through the account's existing default AI Gateway for semantic actions and assertions, and the language model (default `meta/muse-ember-1.0`, reasoning effort `low`) for `waitFor` and `extract`. The application does not receive that token. Follow each action with an exact deterministic assertion. Use `expect` for waiting.
 
 Verify credential sign-in by reaching the authenticated UI; a healthy port is insufficient. A missing sign-in provider or `Sign-in is not configured for this deployment.` remains a product failure. Verify mutations through reload or a second user-facing view, including saved settings, bot/workflow records, session history, and authorization boundaries. Exercise real Cloudflare services and providers without interception, module mocks, or separate browser/test runners.
 

AGENTS.md

@@ -33,7 +33,7 @@ Use Plain Language in introductory, expository, friendly, and other sensible com
 - Run the real Alchemy stack from `e2e.config.ts`; use `config/e2e-dev.config.jsonc` and isolated configured accounts. Keep web port 3000 and API port 3100.
 - `nub run test` runs core flows with Cloudflare credentials and Docker, including Isolate, OpenCode, and Codex prompts. `config/e2e-dev.config.jsonc` sets `aiGatewayLayer` to `mock`, so the `AiGateway` Effect layer answers each model call with the user's message. Assert harness plumbing (prompt, output, persistence), not model reasoning or tool choice. `nub run test:e2e:all` includes additional external integrations and Claude Code; it fails explicitly when required isolated fixtures are missing. Focus one file with `nub run test:e2e tests/settings.e2e.ts`. `test:e2e:live` disables action replay; `test:e2e:cache-strict` detects stale recordings. Action replay recordings in `.e2e/cache` are committed, and CI replays them strictly. Before you mark a pull request ready for review, re-record if you changed an `agent.act` step or the UI one drives: run `gh workflow run validate.yml --ref <branch> -f e2e_record=true`, wait for it to pass, and pull the recordings commit it pushes to your branch. Without CI access, run `nub run test` locally and commit the changed recordings (see "Recorded-action replay" in `docs/e2e.md`).
 - The `AiGateway` mock layer is the only application-side test double. Select it in config; do not add prompt parsing to it or branch on test mode elsewhere. Do not replace app routes or bindings with request interception, module mocks, or a second testing framework. Register passwords and secret fixtures with e2e credentials/secrets.
-- The semantic executor and affected-test filter use `@e2e-dev/decision` on the account's existing default AI Gateway. `scripts/e2e/models.ts` selects the decision model (`E2E_DECISION_MODEL`, default Cloudflare Clef) and the language model (`E2E_LANGUAGE_MODEL`, default `anthropic/claude-haiku-5.5`) through official AI SDK providers. CI reads both from SolZeroAI organization Actions variables. Keep `scripts/e2e/models.ts` identical across SolZero repositories. Authenticate with `CF_AI_GATEWAY_E2E_TOKEN` and send the gateway id as `cf-aig-gateway-id`. Do not use the gateway or run token the application provisions, and do not add a custom executor. Process/CI environment overrides local `E2E_ENV_FILE` values.
+- The semantic executor and affected-test filter use `@e2e-dev/decision` on the account's existing default AI Gateway. `scripts/e2e/models.ts` selects the decision model (`E2E_DECISION_MODEL`, default Cloudflare Clef) and the language model (`E2E_LANGUAGE_MODEL`, default `meta/muse-ember-1.0`) through official AI SDK providers. CI reads both from SolZeroAI organization Actions variables. Keep `scripts/e2e/models.ts` identical across SolZero repositories. Authenticate with `CF_AI_GATEWAY_E2E_TOKEN` and send the gateway id as `cf-aig-gateway-id`. Do not use the gateway or run token the application provisions, and do not add a custom executor. Process/CI environment overrides local `E2E_ENV_FILE` values.
 - Follow the replay, teardown, cleanup, and AI accounting rules in the "Rules for agents" section of `docs/e2e.md`. The app target stops its processes and removes its run directory on exit. Runs are local only, so there is no crash-recovery or cleanup command.
 - Record external-service prerequisites and unverified flows in `docs/e2e.md`. A startup failure or unavailable integration is a blocker, not a passing test. Never print tokens or publish app artifacts externally.
 - Do not send upstream feedback or other external messages without explicit human authorization; upstream skill guidance does not override this policy.

docs/e2e.md

@@ -69,7 +69,7 @@ file in every SolZero repository.
 | Setting | Default | Role |
 | --- | --- | --- |
 | `E2E_DECISION_MODEL` | `@cf/cloudflare/clef` | `agent.act` actions, `agent.assert` verdicts and the affected-test filter |
-| `E2E_LANGUAGE_MODEL` | `anthropic/claude-haiku-5.5` | Text: field values, `agent.waitFor` and `agent.extract` |
+| `E2E_LANGUAGE_MODEL` | `meta/muse-ember-1.0` | Text: field values, `agent.waitFor` and `agent.extract` |
 
 CI reads both settings from SolZeroAI organization Actions variables, so one
 change there moves every repository. The defaults serve local runs and match the
@@ -87,8 +87,12 @@ model locally.
 - The language model uses the official provider for its API format on the
   Cloudflare REST API at `/accounts/<account>/ai/v1`. `anthropic/` models use
   `@ai-sdk/anthropic` on the Messages route. Other models, such as `@cf/`
-  Workers AI models and `openai/` models, use `@ai-sdk/openai` on the chat
-  completions route. Third-party models bill through Cloudflare Unified Billing.
+  Workers AI models, `openai/` models, and `meta/muse-ember-1.0`, use
+  `@ai-sdk/openai` on the chat completions route. Third-party models bill
+  through Cloudflare Unified Billing. The agent sends
+  `providerOptions.openai.reasoningEffort` of `low` with every language-model
+  call, so Muse Ember does not spend its output tokens on reasoning. The
+  decision model does not receive those options.
 
 Both models use the account's default gateway. The gateway id is
 `CF_AI_GATEWAY_E2E_ID`, or `default`, sent as `cf-aig-gateway-id`.

e2e.config.ts

@@ -70,6 +70,9 @@ export default {
   agents: {
     default: {
       executor: decisionExecutor({ model: decisionModel, textModel: languageModel }),
+      // Muse Ember spends most output tokens on reasoning unless effort is low.
+      // The runner forwards this into language-model generateText calls only.
+      providerOptions: { openai: { reasoningEffort: "low" } },
       maxModelCalls: 20,
       maxSteps: 20,
       context:

scripts/e2e/models.ts

@@ -8,7 +8,7 @@ import * as P from "effect/Predicate"
 // variables, so CI changes models for the fleet in one place. The defaults
 // below serve local runs and must match the DNA page.
 const DEFAULT_DECISION_MODEL = "@cf/cloudflare/clef"
-const DEFAULT_LANGUAGE_MODEL = "anthropic/claude-haiku-5.5"
+const DEFAULT_LANGUAGE_MODEL = "meta/muse-ember-1.0"
 
 /**
  * Official AI SDK providers pointed at the Cloudflare AI Gateway REST API.