Deploy Poimen Memory K8s cluster with ArgoCD tracking (M2.2, M3.5-M3.7)

tasks/M1.4-gate-response-parser.md

@@ -4,7 +4,7 @@
 |---|---|
 | Phase | M1 — Gated loop at L1 |
 | Size | M — 1–3 days |
-| Status | ⬜ Not started |
+| Status | ✅ Done |
 | Flags | — |
 | Spec | inlined below |
 | Blocks | M1.3 |
@@ -14,6 +14,47 @@
 Turn the model's tagged output into `(U_t, M̂_t, E_t)`, strictly — because a
 lenient parser silently fabricates gate decisions.
 
+## Files
+
+| Action | Path |
+|---|---|
+| Create | `crates/mem-core/src/gate_parser.rs` — `parse_gate_response()`, `GateResponse`, `ParseError` |
+| Modify | `crates/mem-core/src/lib.rs` — add `pub mod gate_parser;` and re-exports |
+| Create | `fixtures/gate-response-valid.txt` — well-formed model output |
+| Create | `fixtures/gate-response-nested-think.txt` — nested `<think>` tags |
+| Create | `tests/it_gate_parser.rs` — integration tests (workspace root) |
+
+## Dependencies
+
+**None new.** Use `str::find()` and `str::rfind()` for tag extraction. No regex
+crate needed — the tags are simple XML-like delimiters, not a grammar.
+
+## Existing code to reuse
+
+- Pattern reference: `lesson.rs` uses similar string scanning for error markers
+  (`markers()`, `GENERIC_MARKERS`). Same technique, different tags.
+- `thiserror` already in `mem-core` deps for error enum derivation.
+
+## Expected input/output
+
+```
+Input:
+  <think>
+  This chunk shows a kubectl error. The user fixed it by adding --namespace.
+  </think>
+  <check>yes</check>
+  <update>kubectl get pods fails without --namespace; fixed by adding --namespace=kube-system</update>
+  <next>continue</next>
+
+Output:
+  GateResponse {
+    think: "This chunk shows a kubectl error. The user fixed it by adding --namespace.",
+    update_gate: true,
+    candidate: "kubectl get pods fails without --namespace; fixed by adding --namespace=kube-system",
+    exit_gate: false,
+  }
+```
+
 ## Facts (inlined — no spec read needed)
 
 Expected response shape:
@@ -88,7 +129,7 @@ cases. Capture real ones with `MEM_LLM_RECORD` from M1.1.
    silently-defaulted `GateResponse`.
 9. `a9_real_responses` — every recorded real response parses.
 
-**Command:** `cargo test -p mem-core gate_parser`
+**Command:** `cargo test --test it_gate_parser`
 
 **False pass:**
 - A regex that finds the first `<check>` and stops. It passes 1–2 and silently