Adopt pi 0.80's instance-based Models API

.github/workflows/ci.yml

@@ -94,14 +94,20 @@ jobs:
         run: npm test --workspace @onkernel/cua-cli
       - name: Build cua-cli
         run: npm run build --workspace @onkernel/cua-cli
-      - name: Pack tarball
-        run: npm pack --workspace @onkernel/cua-cli --pack-destination "$RUNNER_TEMP"
+      - name: Pack tarballs
+        # Pack the workspace dependencies too so the smoke install resolves
+        # them from the tarballs instead of the registry, where the versions
+        # under development are not published yet.
+        run: |
+          npm pack --workspace @onkernel/cua-ai --pack-destination "$RUNNER_TEMP"
+          npm pack --workspace @onkernel/cua-agent --pack-destination "$RUNNER_TEMP"
+          npm pack --workspace @onkernel/cua-cli --pack-destination "$RUNNER_TEMP"
       - name: CLI bin smoke test
         run: |
           SMOKE_DIR=$(mktemp -d)
           cd "$SMOKE_DIR"
           npm init -y > /dev/null
-          npm install "$RUNNER_TEMP"/onkernel-cua-cli-*.tgz
+          npm install "$RUNNER_TEMP"/onkernel-cua-ai-*.tgz "$RUNNER_TEMP"/onkernel-cua-agent-*.tgz "$RUNNER_TEMP"/onkernel-cua-cli-*.tgz
           OUTPUT=$(./node_modules/.bin/cua --help)
           echo "$OUTPUT"
           echo "$OUTPUT" | grep -q "Usage:"

docs/architecture.md

@@ -247,7 +247,7 @@ user prompt
                     ├─► resolveCuaRuntimeSpec(model) provides toolDefinitions,
                     │   toolExecutors, defaultSystemPrompt, onPayload, …
                     ├─► onPayload (cua-ai) — provider payload transforms
-                    ├─► pi-ai streamSimple → provider HTTP SSE
+                    ├─► pi Models.streamSimple (cuaModels) → provider HTTP SSE
                     │   (OpenAI Responses / Anthropic Messages / Google GenAI / Tzafon / Yutori)
                     ├─► tool_call events carry canonical CuaAction args
                     │   └─► cua-agent executor
@@ -286,7 +286,7 @@ flowchart LR
   browserMod --> sdk[("@onkernel/sdk")]
   harness --> agentPkg["cua-agent: CuaAgentHarness"]
   agentPkg --> piHarness["pi-agent-core AgentHarness"]
-  piHarness --> piAi["pi-ai streamSimple"]
+  piHarness --> piAi["pi Models.streamSimple (cuaModels)"]
   piAi -->|"openai-responses"| openai[("api.openai.com /v1/responses")]
   piAi -->|"anthropic-messages + beta header"| anthro[("api.anthropic.com /v1/messages")]
   piAi -->|"google-generative-ai"| gemini[("generativelanguage.googleapis.com")]

docs/cua-cli-harness-migration.md

@@ -46,9 +46,10 @@ Goals, in priority order:
   interactive UI is rebuilt on pi-tui primitives instead. pi-tui 0.79 provides
   `Markdown`, `Image` (kitty/iTerm2), `Editor` (autocomplete), `SelectList`,
   overlays, keybindings, `ProcessTerminal`.
-- pi-ai's `registerApiProvider` registry is process-global: a test fixture can
-  register a scripted `streamSimple` for an API id and the real harness will
-  route model calls through it. This replaces the `InteractiveDriver` test seam.
+- The harness streams through a pi `Models` collection: a test fixture can
+  build a `createCuaModels()` collection with a scripted provider and pass it
+  to `buildCuaHarness({ models })`, and the real harness routes model calls
+  through it. This replaces the `InteractiveDriver` test seam.
 - `@onkernel/cua-ai` owns the model catalog: `listCuaModels`,
   `parseCuaModelRef`, `getCuaModel`, `CuaModelRef` (`provider:model`), and the
   documented API-key env-var conventions (`getCuaEnvApiKey`).
@@ -128,10 +129,10 @@ Module map (current → target):
 
 ## Test strategy
 
-- **Scripted provider fixture**: a test-only pi-ai provider registered with
-  `registerApiProvider`, whose `streamSimple` replays declarative steps (text
-  deltas, canonical CUA tool calls, errors, await-abort) — port of the current
-  `ScriptedDriver` JSON step DSL, moved below the harness.
+- **Scripted provider fixture**: a test-only pi provider placed in a
+  `createCuaModels()` collection, whose `streamSimple` replays declarative
+  steps (text deltas, canonical CUA tool calls, errors, await-abort) — port
+  of the current `ScriptedDriver` JSON step DSL, moved below the harness.
 - **Fake Kernel client**: plain object stubbing
   `browsers.computer.{batch,captureScreenshot,readClipboard}` etc. (pattern
   already proven in `packages/agent/test`).