feat(dev): add CAM test recipes and update ignore files

- Add `.opencode/` and `**/sim_build` to ignore lists
- Fix justfile syntax: `set dotenv-required := true` (explicit assignment)
- Update SSH tunnel port 8384 → 42705 for local port forwarding
- Add CAM verification recipes: cam-test-all, cam-test-py, cam-test-module, cam-test

.gitignore

@@ -220,6 +220,7 @@ outputs/
 openspec/changes/
 .logs/
 docs/superpowers
+.opencode/
 
 # Devenv
 .devenv*

.justfile

@@ -1,8 +1,7 @@
-set dotenv-required
+set dotenv-required := true
 
 export MSYS2_ARG_CONV_EXCL := "*"
 export MSYS2_ENV_CONV_EXCL := "*"
-
 remote_ssh_target := env("REMOTE_SSH_TARGET")
 remote_docker_container := env("REMOTE_DOCKER_CONTAINER")
 
@@ -15,7 +14,7 @@ sync-data:
 
 ssh:
     ssh \
-    -L 127.0.0.1:8385:127.0.0.1:8384 \
+    -L 127.0.0.1:8385:127.0.0.1:42705 \
     -L 127.0.0.1:9098:127.0.0.1:9098 \
     -L 127.0.0.1:2718:172.30.0.2:2718 \
     {{ remote_ssh_target }}
@@ -42,3 +41,24 @@ remote-check:
 
 remote-dry cmd:
     uv run python scripts/remote_docker_run.py run --dry-run -- {{ quote(cmd) }}
+
+# ── CAM verification ──────────────────────────────────────────────────────────
+
+# Run all 4 integrated CAM configurations (no-noise, write-only, read-only, combined)
+cam-test-all:
+    just remote "make -C hw/sim clean && make -C hw/sim NUM_ROWS=64 LANES=8 HASH_BITS=512 WRITE_NOISE_EN=0 READ_NOISE_EN=0 COCOTB_TEST_MODULES=tests.test_cam_basic"
+    just remote "make -C hw/sim clean && make -C hw/sim NUM_ROWS=64 LANES=8 HASH_BITS=512 WRITE_NOISE_EN=1 WRITE_NOISE_RATE_NUM=1 WRITE_NOISE_RATE_DEN=100 READ_NOISE_EN=0 COCOTB_TEST_MODULES=tests.test_cam_basic"
+    just remote "make -C hw/sim clean && make -C hw/sim NUM_ROWS=64 LANES=8 HASH_BITS=512 WRITE_NOISE_EN=0 READ_NOISE_EN=1 READ_NOISE_RATE_NUM=1 READ_NOISE_RATE_DEN=100 COCOTB_TEST_MODULES=tests.test_cam_basic"
+    just remote "make -C hw/sim clean && make -C hw/sim NUM_ROWS=64 LANES=8 HASH_BITS=512 WRITE_NOISE_EN=1 WRITE_NOISE_RATE_NUM=1 WRITE_NOISE_RATE_DEN=100 READ_NOISE_EN=1 READ_NOISE_RATE_NUM=1 READ_NOISE_RATE_DEN=100 COCOTB_TEST_MODULES=tests.test_cam_basic"
+
+# Run Python reference model tests
+cam-test-py:
+    PYTHONPATH=hw/sim uv run pytest hw/sim/tests/test_ref_model_noise.py -q
+
+# Run a specific CAM test module (e.g., cam-test-module MODULE=test_cam_core_banked)
+cam-test-module MODULE:
+    just remote "make -C hw/sim clean && make -C hw/sim NUM_ROWS=64 LANES=8 HASH_BITS=512 COCOTB_TEST_MODULES=tests.{{ MODULE }}"
+
+# Run a single test case within a module (e.g., cam-test MODULE=test_cam_basic TESTCASE=baseline_no_noise)
+cam-test MODULE TESTCASE:
+    just remote "make -C hw/sim clean && make -C hw/sim NUM_ROWS=64 LANES=8 HASH_BITS=512 COCOTB_TEST_MODULES=tests.{{ MODULE }} COCOTB_TESTCASE={{ TESTCASE }}"

.stignore

@@ -13,3 +13,4 @@ deps
 outputs
 .sisyphus
 **/__pycache__
+**/sim_build