.archon/workflows/lakehouse-architect-review.yaml

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+# Real Archon workflow on the Lakehouse repo, fully via our gateway.
+# Three Pi nodes, each fires LLM → /v1/chat/completions → OpenRouter,
+# every call lands a Langfuse trace + observer event.
+#
+# Read-only (allowed_tools: [read]). Don't pass --branch / leave
+# --no-worktree at runtime so Archon doesn't try to create a worktree.
+name: lakehouse-architect-review
+description: 'Pi reviews Lakehouse architecture in 3 turns through our gateway.'
+provider: pi
+model: openrouter/x-ai/grok-4.1-fast
+
+nodes:
+  - id: shape
+    prompt: |
+      Read these files and answer in 3 short bullets describing the
+      architectural shape of Lakehouse:
+      - /home/profit/lakehouse/Cargo.toml
+      - /home/profit/lakehouse/lakehouse.toml
+      - /home/profit/lakehouse/docs/MODE_RUNNER_TUNING_PLAN.md
+      Be terse. No preamble.
+    allowed_tools: ["read"]
+    effort: low
+    idle_timeout: 90000
+
+  - id: weakness
+    prompt: |
+      Read /home/profit/lakehouse/crates/gateway/src/v1/mod.rs and
+      identify ONE real weakness or risk. Cite file:line. One paragraph.
+    allowed_tools: ["read"]
+    effort: low
+    idle_timeout: 90000
+    depends_on: [shape]
+
+  - id: improvement
+    prompt: |
+      Based on the prior weakness ($weakness.output), propose ONE
+      surgical improvement (≤6 lines of Rust). Show the patch as
+      `old_string` and `new_string` in markdown code blocks.
+    allowed_tools: []
+    effort: low
+    idle_timeout: 90000
+    depends_on: [weakness]